首页 > 最新文献

Tribology - Materials, Surfaces & Interfaces最新文献

英文 中文
Sliding wear behaviour of austempered ductile iron, boron steel and AISI 1045 steel of similar hardness: effect of microstructure, yield strength, and strain hardening 相同硬度的等温球墨铸铁、硼钢和AISI 1045钢的滑动磨损行为:微观组织、屈服强度和应变硬化的影响
IF 1.3 Q2 Engineering Pub Date : 2023-09-05 DOI: 10.1080/17515831.2023.2252298
Anoop Gupta, Manpreet Singh, Uma Batra, Sandan Kumar Sharma
ABSTRACT A study on dry sliding wear investigated four alloys: fully austenitized ADI (F-ADI), intercritically austenitized austempered ductile iron (I-ADI), hardened and tempered Boron steel (B-Steel), and hardened and tempered AISI 1045 steel (EN-Steel). Despite their similar hardness levels, these alloys differ in composition and microstructure. Testing was conducted using a Ball-On-Disc setup (ASTM G99-05) with a chrome steel ball, maintaining a constant sliding speed of 0.6 m/s and applying loads between 20 and 80 N. This study aimed to understand the influence of yield strength (σy ), strain hardening coefficient (n), and microstructure on sliding wear under uniform hardness conditions. The findings indicated a strong connection between sliding wear resistance, strain hardening coefficient, toughness, and yield strength. Wear mechanisms varied slightly among materials; F-ADI and I-ADI exhibited deformed layers with increased hardness and oxide formation, while B-Steel and EN-Steel showed micro-cutting and micro-ploughing. F-ADI's high-carbon austenite film and I-ADI's proeutectoid ferrite contributed to improved wear performance. The hardness of the deformation layer on FADI and I-ADI's worn surfaces highlighted the benefits of strain hardening in dry sliding wear. GRAPHICAL ABSTRACT
研究了四种合金的干滑动磨损:完全奥氏体化的ADI (F-ADI)、临界间奥氏体化的奥回火球墨铸铁(I-ADI)、调质硼钢(B-Steel)和调质AISI 1045钢(EN-Steel)。尽管它们的硬度水平相似,但这些合金在成分和微观结构上有所不同。采用ASTM G99-05球-盘式试验装置(ball - on - disc),在恒定滑动速度为0.6 m/s的条件下,对铬钢球施加20 ~ 80 n的载荷,研究均匀硬度条件下屈服强度(σy)、应变硬化系数(n)和显微组织对滑动磨损的影响。研究结果表明,滑动耐磨性、应变硬化系数、韧性和屈服强度之间有很强的联系。不同材料的磨损机制略有不同;F-ADI和I-ADI表现为变形层,硬度增加,氧化物形成,而B-Steel和EN-Steel表现为微切削和微犁耕。F-ADI的高碳奥氏体膜和I-ADI的共析铁素体有助于提高磨损性能。FADI和I-ADI磨损表面变形层的硬度突出了干滑动磨损中应变硬化的好处。图形抽象
{"title":"Sliding wear behaviour of austempered ductile iron, boron steel and AISI 1045 steel of similar hardness: effect of microstructure, yield strength, and strain hardening","authors":"Anoop Gupta, Manpreet Singh, Uma Batra, Sandan Kumar Sharma","doi":"10.1080/17515831.2023.2252298","DOIUrl":"https://doi.org/10.1080/17515831.2023.2252298","url":null,"abstract":"ABSTRACT A study on dry sliding wear investigated four alloys: fully austenitized ADI (F-ADI), intercritically austenitized austempered ductile iron (I-ADI), hardened and tempered Boron steel (B-Steel), and hardened and tempered AISI 1045 steel (EN-Steel). Despite their similar hardness levels, these alloys differ in composition and microstructure. Testing was conducted using a Ball-On-Disc setup (ASTM G99-05) with a chrome steel ball, maintaining a constant sliding speed of 0.6 m/s and applying loads between 20 and 80 N. This study aimed to understand the influence of yield strength (σy ), strain hardening coefficient (n), and microstructure on sliding wear under uniform hardness conditions. The findings indicated a strong connection between sliding wear resistance, strain hardening coefficient, toughness, and yield strength. Wear mechanisms varied slightly among materials; F-ADI and I-ADI exhibited deformed layers with increased hardness and oxide formation, while B-Steel and EN-Steel showed micro-cutting and micro-ploughing. F-ADI's high-carbon austenite film and I-ADI's proeutectoid ferrite contributed to improved wear performance. The hardness of the deformation layer on FADI and I-ADI's worn surfaces highlighted the benefits of strain hardening in dry sliding wear. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74305502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tribological aspects of magnesium matrix composites: a review of recent experimental studies 镁基复合材料摩擦学方面的研究进展
IF 1.3 Q2 Engineering Pub Date : 2023-08-20 DOI: 10.1080/17515831.2023.2246809
F. Aydın
ABSTRACT The demand for magnesium (Mg) alloys is increasing in many industries, such as automotive and aerospace, thanks to their low density and high specific strength. However, the poor tribological performance of Mg alloys is one of the most important disadvantages that limit their widespread use. Researchers have developed different approaches to improve the wear performance of Mg alloys, such as alloying, coatings, surface modifications and composite production. Wear performance of systems with sliding parts are crucial for a lifetime and energy efficiency. The development of Mg matrix composites can significantly reduce energy loss by reducing damage from friction and wear. For this reason, it is crucial to understand the wear behaviour of recent Mg matrix composites. The effect of different parameters such as load, sliding speed, reinforcement content, reinforcement type and temperature on the wear performance of Mg matrix composites were investigated. GRAPHICAL ABSTRACT
由于镁合金具有低密度和高比强度的特点,在汽车和航空航天等许多行业中,对镁合金的需求正在增加。然而,镁合金较差的摩擦学性能是限制其广泛应用的最重要的缺点之一。研究人员已经开发出不同的方法来改善镁合金的磨损性能,如合金化、涂层、表面改性和复合材料生产。具有滑动部件的系统的磨损性能对使用寿命和能源效率至关重要。Mg基复合材料的开发可以通过减少摩擦磨损损伤来显著降低能量损失。因此,了解最新Mg基复合材料的磨损行为至关重要。研究了载荷、滑动速度、增强量、增强类型和温度等参数对Mg基复合材料磨损性能的影响。图形抽象
{"title":"Tribological aspects of magnesium matrix composites: a review of recent experimental studies","authors":"F. Aydın","doi":"10.1080/17515831.2023.2246809","DOIUrl":"https://doi.org/10.1080/17515831.2023.2246809","url":null,"abstract":"ABSTRACT The demand for magnesium (Mg) alloys is increasing in many industries, such as automotive and aerospace, thanks to their low density and high specific strength. However, the poor tribological performance of Mg alloys is one of the most important disadvantages that limit their widespread use. Researchers have developed different approaches to improve the wear performance of Mg alloys, such as alloying, coatings, surface modifications and composite production. Wear performance of systems with sliding parts are crucial for a lifetime and energy efficiency. The development of Mg matrix composites can significantly reduce energy loss by reducing damage from friction and wear. For this reason, it is crucial to understand the wear behaviour of recent Mg matrix composites. The effect of different parameters such as load, sliding speed, reinforcement content, reinforcement type and temperature on the wear performance of Mg matrix composites were investigated. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83800325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of the Si3N4 coating formation through plasma spraying on Inconel 738 等离子喷涂Inconel 738 Si3N4涂层的优化
IF 1.3 Q2 Engineering Pub Date : 2023-08-16 DOI: 10.1080/17515831.2023.2245999
Mojtaba Najafizadeh, M. Ghasempour-Mouziraji, Sajad Shahrani, M. Bozorg, C. Goulas, M. Hosseinzadeh, P. Cavaliere, A. Perrone, S. Perrone
ABSTRACT In the present study, the deposition of silicon nitride (Si3N4) coating on Inconel 738 through plasma spray has been investigated. For producing the Si3N4 coating, different times (6, 8 and 10 s), different distances of the plasma spray torch from the substrate (30, 35 and 40 mm) and different currents for plasma spraying (3000, 3250 and 3500 A) were employed. For the characterisation of the coatings, SEM (thickness), XRD, micro-hardness and adhesion of the samples were measured. The coatings’ surface morphology was investigated through SEM. Based on the experimental results, by using a spraying time of 10 s, a distance of the torch of 40 mm and a current of 3500 A, high microhardness and adhesion of the coatings are obtained. On the other hand, the thickness of the coating increased by reducing the distance and increasing spray time and current.
本文研究了等离子喷涂法在Inconel 738表面沉积氮化硅(Si3N4)涂层。在制备氮化硅涂层时,采用了不同的时间(6、8和10 s),等离子喷涂炬距离基体的距离(30、35和40 mm)以及不同的等离子喷涂电流(3000、3250和3500 A)。通过扫描电镜(SEM)、x射线衍射(XRD)、显微硬度和附着力对涂层进行表征。通过扫描电镜研究了涂层的表面形貌。实验结果表明,在喷涂时间为10 s、喷枪距离为40 mm、电流为3500 a的条件下,涂层具有较高的显微硬度和附着力。另一方面,减小喷涂距离,增加喷涂时间和电流,涂层厚度增加。
{"title":"Optimization of the Si3N4 coating formation through plasma spraying on Inconel 738","authors":"Mojtaba Najafizadeh, M. Ghasempour-Mouziraji, Sajad Shahrani, M. Bozorg, C. Goulas, M. Hosseinzadeh, P. Cavaliere, A. Perrone, S. Perrone","doi":"10.1080/17515831.2023.2245999","DOIUrl":"https://doi.org/10.1080/17515831.2023.2245999","url":null,"abstract":"ABSTRACT In the present study, the deposition of silicon nitride (Si3N4) coating on Inconel 738 through plasma spray has been investigated. For producing the Si3N4 coating, different times (6, 8 and 10 s), different distances of the plasma spray torch from the substrate (30, 35 and 40 mm) and different currents for plasma spraying (3000, 3250 and 3500 A) were employed. For the characterisation of the coatings, SEM (thickness), XRD, micro-hardness and adhesion of the samples were measured. The coatings’ surface morphology was investigated through SEM. Based on the experimental results, by using a spraying time of 10 s, a distance of the torch of 40 mm and a current of 3500 A, high microhardness and adhesion of the coatings are obtained. On the other hand, the thickness of the coating increased by reducing the distance and increasing spray time and current.","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74651799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thin TiN coating on NiTi substrate through PVD method: improvement of the wear resistance 通过PVD法在NiTi基板上镀薄TiN:提高耐磨性
IF 1.3 Q2 Engineering Pub Date : 2023-08-16 DOI: 10.1080/17515831.2023.2245652
Nasim Botshekanan, H. Majidian, M. Farvizi
ABSTRACT The preparation of a thin hard coating is the main challenge in the coating of NiTi articles. To achieve a thin coating of titanium nitride (TiN) on NiTi substrate, physical vapour deposition (PVD) was proposed in this study. Deposition of TiN coating was carried out at the nitrogen flows of 0.79 and 0.93 Pa. Phase composition, thickness, porosity, adhesion strength, hardness, and tribological properties of the TiN coatings were evaluated. The adhesion of the coating to the substrate was acceptable. Increasing of the gas flow resulted in a higher thickness (1 μm), lower porosity and higher adhesion strength. On contrary, the samples prepared with the lower gas flow showed higher hardness and elastic modulus. The coated samples showed smaller width of wear, lower wear rate and lower friction coefficient in comparison to the substrate. The delamination and adhesive wear mechanisms govern the wear process.
制备一层薄而硬的涂层是镍钛涂层的主要难点。为了在NiTi衬底上制备一层薄薄的氮化钛(TiN),本文提出了物理气相沉积(PVD)的方法。在0.79和0.93 Pa的氮气流下沉积TiN涂层。对TiN涂层的相组成、厚度、孔隙率、附着强度、硬度和摩擦学性能进行了评价。涂层与基材的附着力是可以接受的。随着气体流量的增加,涂层厚度增大(1 μm),孔隙率降低,粘接强度提高。相反,低气体流量制备的样品硬度和弹性模量更高。与基体相比,涂层试样具有较小的磨损宽度、较低的磨损速率和较低的摩擦系数。分层磨损和粘着磨损机制支配着磨损过程。
{"title":"Thin TiN coating on NiTi substrate through PVD method: improvement of the wear resistance","authors":"Nasim Botshekanan, H. Majidian, M. Farvizi","doi":"10.1080/17515831.2023.2245652","DOIUrl":"https://doi.org/10.1080/17515831.2023.2245652","url":null,"abstract":"ABSTRACT The preparation of a thin hard coating is the main challenge in the coating of NiTi articles. To achieve a thin coating of titanium nitride (TiN) on NiTi substrate, physical vapour deposition (PVD) was proposed in this study. Deposition of TiN coating was carried out at the nitrogen flows of 0.79 and 0.93 Pa. Phase composition, thickness, porosity, adhesion strength, hardness, and tribological properties of the TiN coatings were evaluated. The adhesion of the coating to the substrate was acceptable. Increasing of the gas flow resulted in a higher thickness (1 μm), lower porosity and higher adhesion strength. On contrary, the samples prepared with the lower gas flow showed higher hardness and elastic modulus. The coated samples showed smaller width of wear, lower wear rate and lower friction coefficient in comparison to the substrate. The delamination and adhesive wear mechanisms govern the wear process.","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72832751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Traction performance modeling of worn footwear with perpendicular treads 垂直踏面磨损鞋的牵引性能建模
IF 1.3 Q2 Engineering Pub Date : 2023-08-16 DOI: 10.1080/17515831.2023.2246757
Shubham Gupta, Subhodip Chatterjee, Ayush Malviya, A. Chanda
ABSTRACT The traction performance of the footwear deteriorates due to outsole wear which further increases the risk of slip and fall related accidents. To date, several studies have tested footwear tractions across several slippery conditions but only a few studies have attempted to assess their performance considering worn shoes. In this work, nine outsoles, with systematically modified tread geometries, were investigated, to study the effects of tread patterns in new and worn conditions on traction, across common slippery conditions. The outsoles were progressively worn in three wear cycles. Outsoles with increased worn regions generated lower friction and higher fluid pressures, indicating increased slipping risks. Also, diversion of fluid flow due to large worn regions produced high fluid accumulations at other locations over the outsoles. The methods and results are anticipated to help footwear manufacturers with the strategic design of tread patterns that can provide improved friction even when completely worn. GRAPHICAL ABSTRACT
由于大底磨损,鞋类的牵引性能恶化,进一步增加了滑倒相关事故的风险。迄今为止,已经有几项研究测试了鞋子在几种湿滑条件下的牵引力,但只有少数研究试图评估鞋子在磨损情况下的表现。在这项工作中,研究了九种外底,系统地修改了胎面几何形状,以研究胎面图案在新的和磨损的条件下对牵引力的影响,在常见的湿滑条件下。外底在三个磨损周期中逐渐磨损。磨损区域增加的外底产生更低的摩擦和更高的流体压力,表明滑动风险增加。此外,由于大磨损区域导致流体流动的转移,在外底的其他位置产生了高流体积聚。这些方法和结果有望帮助鞋类制造商进行胎面图案的战略设计,即使在完全磨损的情况下也能提供更好的摩擦。图形抽象
{"title":"Traction performance modeling of worn footwear with perpendicular treads","authors":"Shubham Gupta, Subhodip Chatterjee, Ayush Malviya, A. Chanda","doi":"10.1080/17515831.2023.2246757","DOIUrl":"https://doi.org/10.1080/17515831.2023.2246757","url":null,"abstract":"ABSTRACT The traction performance of the footwear deteriorates due to outsole wear which further increases the risk of slip and fall related accidents. To date, several studies have tested footwear tractions across several slippery conditions but only a few studies have attempted to assess their performance considering worn shoes. In this work, nine outsoles, with systematically modified tread geometries, were investigated, to study the effects of tread patterns in new and worn conditions on traction, across common slippery conditions. The outsoles were progressively worn in three wear cycles. Outsoles with increased worn regions generated lower friction and higher fluid pressures, indicating increased slipping risks. Also, diversion of fluid flow due to large worn regions produced high fluid accumulations at other locations over the outsoles. The methods and results are anticipated to help footwear manufacturers with the strategic design of tread patterns that can provide improved friction even when completely worn. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87422808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Plasma-sprayed Al2O3-TiB2-SiC ternary composite coatings and its wear behaviour based on SiC content 等离子喷涂Al2O3-TiB2-SiC三元复合涂层及其基于SiC含量的磨损性能
IF 1.3 Q2 Engineering Pub Date : 2023-07-16 DOI: 10.1080/17515831.2023.2232990
Seyed Hossein Mirhosseini, M. Mosallaee, M. Razavi, M. Fotouhi
ABSTRACT This paper aims to study the effect of adding different SiC content on the wear performance of Al2O3-TiB2-SiC ternary composite coatings produced by the air plasma spraying process. The study used SHS powders as primary materials, consisting of H3BO3, Al, and TiO2, and 5, 10, and 15 Vol.% SiC. The microstructure and wear specifications of the coatings were characterised using FESEM, microhardness, and pin-on-disk methods. The results showed that the addition of SiC led to higher hardness and lower wear track width and rate compared to Al2O3-TiB2 composite coatings. The best wear behaviour was observed in Al2O3-TiB2-10%SiC and 15 wt% SiC composite coatings. The main wear mechanisms were found to be brittle fracture, delamination and adhesive for all samples. GRAPHICAL ABSTRACT
本文旨在研究添加不同SiC含量对空气等离子喷涂工艺制备的Al2O3-TiB2-SiC三元复合涂层耐磨性能的影响。该研究以SHS粉末为主要材料,由H3BO3, Al, TiO2和5%,10%和15% Vol.% SiC组成。利用FESEM、显微硬度和销盘法对涂层的微观结构和磨损性能进行了表征。结果表明,与Al2O3-TiB2复合涂层相比,SiC的加入提高了涂层的硬度,降低了涂层的磨损痕迹宽度和磨损速率。Al2O3-TiB2-10%SiC和15wt %SiC复合涂层的耐磨性最好。所有试样的主要磨损机制为脆性断裂、脱层和粘接。图形抽象
{"title":"Plasma-sprayed Al2O3-TiB2-SiC ternary composite coatings and its wear behaviour based on SiC content","authors":"Seyed Hossein Mirhosseini, M. Mosallaee, M. Razavi, M. Fotouhi","doi":"10.1080/17515831.2023.2232990","DOIUrl":"https://doi.org/10.1080/17515831.2023.2232990","url":null,"abstract":"ABSTRACT This paper aims to study the effect of adding different SiC content on the wear performance of Al2O3-TiB2-SiC ternary composite coatings produced by the air plasma spraying process. The study used SHS powders as primary materials, consisting of H3BO3, Al, and TiO2, and 5, 10, and 15 Vol.% SiC. The microstructure and wear specifications of the coatings were characterised using FESEM, microhardness, and pin-on-disk methods. The results showed that the addition of SiC led to higher hardness and lower wear track width and rate compared to Al2O3-TiB2 composite coatings. The best wear behaviour was observed in Al2O3-TiB2-10%SiC and 15 wt% SiC composite coatings. The main wear mechanisms were found to be brittle fracture, delamination and adhesive for all samples. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88233477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating the effect of temperature and time on the starvation of lubricants for the wind turbine industry 调查温度和时间对风力涡轮机行业润滑油短缺的影响
IF 1.3 Q2 Engineering Pub Date : 2023-07-03 DOI: 10.1080/17515831.2023.2232991
E. Georgiou, D. Drees, L. M. Lopes, M. De Bilde, A. Koutsomichalis
ABSTRACT In the wind turbine industry, mechanical components sometimes have to operate under starved lubrication. This occurs mainly after maintenance and/or repairing procedures, when the wind turbine is starting up again after a prolonged inactive period. In field observations have shown that oil starvation is more prominent in warmer climates and of course for longer durations where the mechanical components remained ‘inactive’. To get a better insight on this issue, a validation test procedure was developed based on reciprocating sliding tests. This protocol was used to investigate the starvation behaviour of two commercially available oils on metallic components, which were exposed at different temperatures (ranging from −20° to 40°C) and durations (ranging from 5 to 21 days). Based on these tests the resistance to starvation (failure time) and the effect of critical waiting time and temperature to initiate starvation were assessed.
在风力涡轮机工业中,机械部件有时必须在缺乏润滑的情况下运行。这主要发生在维护和/或修理程序之后,当风力涡轮机在长时间不工作后再次启动时。现场观察表明,在较温暖的气候条件下,当然在机械部件处于“不活动”状态的较长时间内,油荒更为突出。为了更好地了解这一问题,开发了基于往复滑动试验的验证试验程序。该方案用于研究两种市售油在不同温度(- 20°C至40°C)和时间(5至21天)下对金属成分的饥饿行为。在此基础上,对其耐饥饿性(失效时间)、临界等待时间和启动饥饿温度的影响进行了评价。
{"title":"Investigating the effect of temperature and time on the starvation of lubricants for the wind turbine industry","authors":"E. Georgiou, D. Drees, L. M. Lopes, M. De Bilde, A. Koutsomichalis","doi":"10.1080/17515831.2023.2232991","DOIUrl":"https://doi.org/10.1080/17515831.2023.2232991","url":null,"abstract":"ABSTRACT In the wind turbine industry, mechanical components sometimes have to operate under starved lubrication. This occurs mainly after maintenance and/or repairing procedures, when the wind turbine is starting up again after a prolonged inactive period. In field observations have shown that oil starvation is more prominent in warmer climates and of course for longer durations where the mechanical components remained ‘inactive’. To get a better insight on this issue, a validation test procedure was developed based on reciprocating sliding tests. This protocol was used to investigate the starvation behaviour of two commercially available oils on metallic components, which were exposed at different temperatures (ranging from −20° to 40°C) and durations (ranging from 5 to 21 days). Based on these tests the resistance to starvation (failure time) and the effect of critical waiting time and temperature to initiate starvation were assessed.","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45757507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial for the special issue on Sustainable Lubrication 可持续润滑特刊社论
IF 1.3 Q2 Engineering Pub Date : 2023-07-03 DOI: 10.1080/17515831.2023.2246211
S. Bhaumik
Systematic planning of an activity is a key factor for the success of any event. It is well said that ‘If Well planned, 90% of the work is completed’. But planning a successful activity depends on how sustainable the solutions would be. For machinery too, the maintenance planning is to be sustainable, particularly the lubrication. Additionally, with the concern of the environment now industries are looking for sustainable but environment-friendly economical solutions. Lubricants which form one of the major mechanical elements need to be taken into high consideration. However, it is important to understand the role of these lubricants in mechanical applications and choose the correct lubricant for specific applications. The special issue focuses on various tribological systems from nano to macro scale. This issue brings together interesting contributions both from industry and academia covering applications such as wind turbines, nano-bio-lubricants, self-lubricating nanocomposites, coatings, and natural composite brake pads. The topics covered diverse topics highlighting innovative scientific approaches covering modern lubrication techniques. The special issue is divided into two sections: initial articles focus on the lubrication aspects of industrial applications and later articles focus on the composites and coatings, thus, covering several dimensions in the field of tribology. The issue begins with an interesting manuscript ‘Investigating the effect of temperature and time on the starvation of lubricants for the wind turbine industry’ where Georgiou et al. developed a validation test procedure and reported the effect of temperature and time on lubrication starvation in windmills. Sustainable lubricants are the need of the hour. Biodegradable lubricants are lubricants of interest to the environmental policies of all nations. In ‘Performance Assessment of Some Selected Vegetable Oils as Lubricants in Turning of AISI 1045 Steel Using a Taguchi-Based Grey Relational Analysis Approach’, Abegunde et al. reported the efficacy of vegetable oil in turning AISI 1045. The incorporation of nanotechnology in lubricants had exhibited an improvement in the tribological properties of lubricants. Srivyas et al. evaluated the tribological properties of a hybrid nanoparticle added poly alpha olefin oils in ‘Enhanced Extreme Pressure and Tribological Performance of Hybrid Nano Lubricant’ and reported a significant reduction in frictional coefficient. Furthermore, in ‘Tribological Evaluation of Rice Bran Oil Based Ionanolubricants Containing Ionic Liquids and Nanoparticles’. Garg et al. reported an improvement in the tribological properties of rice bran oil by introducing ionic liquids along with nanoparticles. Recent advances in self-lubricating composites have also been an area of interest in this issue. In several applications, composites need to be wear-resistant and one of the most exciting topics is self-lubricating composites. ‘Investigations on the temper
系统的活动计划是任何活动成功的关键因素。俗话说得好,“如果计划得当,90%的工作都完成了”。但是,计划一项成功的活动取决于解决方案的可持续性。对于机械,维护计划也是可持续的,特别是润滑。此外,随着对环境的关注,现在工业正在寻找可持续但环境友好的经济解决方案。润滑剂作为主要机械元件之一,需要高度重视。然而,重要的是要了解这些润滑剂在机械应用中的作用,并为特定应用选择正确的润滑剂。该特刊关注从纳米到宏观尺度的各种摩擦学系统。本期杂志汇集了来自工业界和学术界的有趣贡献,涵盖了风力涡轮机、纳米生物润滑剂、自润滑纳米复合材料、涂料和天然复合刹车片等应用。主题涵盖了不同的主题,突出了涵盖现代润滑技术的创新科学方法。该特刊分为两个部分:最初的文章侧重于工业应用的润滑方面,后来的文章侧重于复合材料和涂层,因此,涵盖了摩擦学领域的几个维度。这期杂志从一篇有趣的手稿《研究温度和时间对风力涡轮机行业润滑油缺乏的影响》开始,其中Georgiou等人开发了一个验证测试程序,并报告了温度和时间对风车润滑缺乏的影响。可持续润滑油是当前的需求。可生物降解润滑剂是各国环境政策关注的润滑剂。Abegunde等人在“使用基于田口的灰色关联分析方法对一些选定的植物油作为AISI 1045钢车用润滑剂的性能评估”中报道了植物油在AISI 1045车用中的功效。纳米技术在润滑油中的应用改善了润滑油的摩擦学性能。Srivyas等人在“增强的极压和混合纳米润滑剂的摩擦学性能”中评估了添加聚α -烯烃油的混合纳米颗粒的摩擦学性能,并报告了摩擦系数的显着降低。此外,在“含有离子液体和纳米颗粒的米糠油基离子润滑剂的摩擦学评价”中。Garg等人报道,通过引入离子液体和纳米颗粒,米糠油的摩擦学性能得到了改善。自润滑复合材料的最新进展也是这个问题的一个感兴趣的领域。在一些应用中,复合材料需要耐磨,其中最令人兴奋的主题之一是自润滑复合材料。Radhamani等人的“火花等离子烧结CNT304 SS自润滑纳米复合材料的温度依赖摩擦学行为研究”报告了cnt掺入304不锈钢在高温下的增强摩擦学性能的结果,特别是在石油和天然气工业中的应用。结果非常有趣,因为他们报告了高温下磨损的显著减少。此外,通过烧结在钢中掺入碳纳米管的过程也值得注意。天然复合材料也被用于刹车片。Bharath KN等人撰写的《天然复合材料刹车片研究的最新进展:综合综述》一文全面回顾了天然复合材料的最新进展。本文进一步讨论了各种刹车片材料的磨损机理,并总结了利用现代技术制造这种天然复合刹车片的可能性。Rajeshshyam R.在“干滑动条件下Al 6061-T6基板上WS2固体润滑剂沉积层的磨损特性和可持续性”一文中报道了铝基上WS2固体润滑剂涂层的优异抗磨性能。该手稿报道了WS2涂层的减磨性能,因此适用于几种工业应用。因此,可以看出,特刊不仅关注常规学术研究,而且关注工业应用。在与《华尔街日报》的编辑委员会,特别是与Tomasz Liskiewicz教授进行了一系列积极的讨论之后,本期特刊才得以曝光。我
{"title":"Editorial for the special issue on Sustainable Lubrication","authors":"S. Bhaumik","doi":"10.1080/17515831.2023.2246211","DOIUrl":"https://doi.org/10.1080/17515831.2023.2246211","url":null,"abstract":"Systematic planning of an activity is a key factor for the success of any event. It is well said that ‘If Well planned, 90% of the work is completed’. But planning a successful activity depends on how sustainable the solutions would be. For machinery too, the maintenance planning is to be sustainable, particularly the lubrication. Additionally, with the concern of the environment now industries are looking for sustainable but environment-friendly economical solutions. Lubricants which form one of the major mechanical elements need to be taken into high consideration. However, it is important to understand the role of these lubricants in mechanical applications and choose the correct lubricant for specific applications. The special issue focuses on various tribological systems from nano to macro scale. This issue brings together interesting contributions both from industry and academia covering applications such as wind turbines, nano-bio-lubricants, self-lubricating nanocomposites, coatings, and natural composite brake pads. The topics covered diverse topics highlighting innovative scientific approaches covering modern lubrication techniques. The special issue is divided into two sections: initial articles focus on the lubrication aspects of industrial applications and later articles focus on the composites and coatings, thus, covering several dimensions in the field of tribology. The issue begins with an interesting manuscript ‘Investigating the effect of temperature and time on the starvation of lubricants for the wind turbine industry’ where Georgiou et al. developed a validation test procedure and reported the effect of temperature and time on lubrication starvation in windmills. Sustainable lubricants are the need of the hour. Biodegradable lubricants are lubricants of interest to the environmental policies of all nations. In ‘Performance Assessment of Some Selected Vegetable Oils as Lubricants in Turning of AISI 1045 Steel Using a Taguchi-Based Grey Relational Analysis Approach’, Abegunde et al. reported the efficacy of vegetable oil in turning AISI 1045. The incorporation of nanotechnology in lubricants had exhibited an improvement in the tribological properties of lubricants. Srivyas et al. evaluated the tribological properties of a hybrid nanoparticle added poly alpha olefin oils in ‘Enhanced Extreme Pressure and Tribological Performance of Hybrid Nano Lubricant’ and reported a significant reduction in frictional coefficient. Furthermore, in ‘Tribological Evaluation of Rice Bran Oil Based Ionanolubricants Containing Ionic Liquids and Nanoparticles’. Garg et al. reported an improvement in the tribological properties of rice bran oil by introducing ionic liquids along with nanoparticles. Recent advances in self-lubricating composites have also been an area of interest in this issue. In several applications, composites need to be wear-resistant and one of the most exciting topics is self-lubricating composites. ‘Investigations on the temper","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44770817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigations on the temperature-dependent tribological behaviour of spark plasma sintered CNT-304 SS self-lubricating nanocomposites 火花等离子烧结CNT-304 SS自润滑纳米复合材料摩擦学性能研究
IF 1.3 Q2 Engineering Pub Date : 2023-07-03 DOI: 10.1080/17515831.2023.2243426
A. Radhamani, S. Bhaumik, H. Lau, M. Kamaraj, S. Ramakrishna
ABSTRACT Herein, we report the tribological behaviour of CNT-304 stainless steel composites at room (28°C) and high temperatures (200°C). Nanocomposites of various CNT concentrations, namely 0.2, 0.5, 1.0, 2.0, 3.0, and 4.0 wt%, were prepared. A significant amount of grain refinement resulted in an increase in CNT loading. A tribological study was carried out at 28°C and 200°C. Wear resistance was found to enhance with an increase in CNT concentration at both temperatures. However, a slightly higher wear rate was observed at 200°C for the samples with CNT content < 3 wt% than their corresponding low-temperature values. About 86%, 91% drop-in wear rate was seen in 2.0 wt% CNT-304 SS, and 4.0 wt% CNT-304SS, respectively, as compared to pure SS at 28°C, which is 54% and 88% decrease at 200°C and is very promising. The decrease in wear volume with CNT content at both temperatures can be ascribed to the self-lubricating and reinforcing nature of CNTs in the metal matrix composites. Severe abrasive wear in the pristine SS samples was slowly changed to mild abrasive and lubricated wear in composites. A systematic study on the tribological behaviour of CNT-SS composites can shed light on the benefits and detriments of using them for various applications. Highlights Incorporation of CNTs into 304 SS matrix caused grain refinement. Wear rate decreased with CNT content and 4.0 wt% CNT-SS showed minimum wear rate while pristine gave the maximum at both 28°C and 200°C. About 86% and 54% decrease in wear rate were observed for 2.0 wt% CNT-304 SS at 28°C and 200°C respectively as compared to the pristine 304 SS sample. Wear rate at 200°C was slightly more than that of room temperature (28°C) for CNT content < 3 wt%. The 3.0 wt% CNT-304 SS and 4.0 wt% CNT-304 SS showed nearly the same wear rate at both ambient and 200°C test. GRAPHICAL ABSTRACT
本文报道了CNT-304不锈钢复合材料在室温(28°C)和高温(200°C)下的摩擦学行为。制备了不同碳纳米管浓度的纳米复合材料,即0.2、0.5、1.0、2.0、3.0和4.0 wt%。大量的晶粒细化导致碳纳米管负载的增加。在28°C和200°C下进行了摩擦学研究。在两个温度下,随着碳纳米管浓度的增加,耐磨性增强。然而,对于碳纳米管含量< 3wt %的样品,在200°C时观察到的磨损率略高于相应的低温值。与28°C的纯SS相比,2.0 wt% CNT-304SS和4.0 wt% CNT-304SS的磨损下降率分别为86%和91%,200°C的磨损下降率分别为54%和88%,这是非常有希望的。在两种温度下,随着碳纳米管含量的增加,磨损体积的减小可以归因于碳纳米管在金属基复合材料中的自润滑和增强特性。原始SS试样的严重磨粒磨损逐渐转变为复合材料的轻度磨粒和润滑磨损。对碳纳米管- ss复合材料摩擦学行为的系统研究可以揭示在各种应用中使用它们的利弊。在304 SS基体中加入CNTs导致晶粒细化。磨损率随碳纳米管含量的增加而下降,4.0 wt%的碳纳米管ss在28°C和200°C时表现出最小的磨损率,而原始碳纳米管在28°C和200°C时表现出最大的磨损率。与原始的304 SS样品相比,2.0 wt%的CNT-304 SS在28°C和200°C时的磨损率分别下降了86%和54%。当碳纳米管含量< 3wt %时,200°C下的磨损率略高于室温(28°C)。3.0 wt% CNT-304 SS和4.0 wt% CNT-304 SS在环境和200°C测试中显示出几乎相同的磨损率。图形抽象
{"title":"Investigations on the temperature-dependent tribological behaviour of spark plasma sintered CNT-304 SS self-lubricating nanocomposites","authors":"A. Radhamani, S. Bhaumik, H. Lau, M. Kamaraj, S. Ramakrishna","doi":"10.1080/17515831.2023.2243426","DOIUrl":"https://doi.org/10.1080/17515831.2023.2243426","url":null,"abstract":"ABSTRACT Herein, we report the tribological behaviour of CNT-304 stainless steel composites at room (28°C) and high temperatures (200°C). Nanocomposites of various CNT concentrations, namely 0.2, 0.5, 1.0, 2.0, 3.0, and 4.0 wt%, were prepared. A significant amount of grain refinement resulted in an increase in CNT loading. A tribological study was carried out at 28°C and 200°C. Wear resistance was found to enhance with an increase in CNT concentration at both temperatures. However, a slightly higher wear rate was observed at 200°C for the samples with CNT content < 3 wt% than their corresponding low-temperature values. About 86%, 91% drop-in wear rate was seen in 2.0 wt% CNT-304 SS, and 4.0 wt% CNT-304SS, respectively, as compared to pure SS at 28°C, which is 54% and 88% decrease at 200°C and is very promising. The decrease in wear volume with CNT content at both temperatures can be ascribed to the self-lubricating and reinforcing nature of CNTs in the metal matrix composites. Severe abrasive wear in the pristine SS samples was slowly changed to mild abrasive and lubricated wear in composites. A systematic study on the tribological behaviour of CNT-SS composites can shed light on the benefits and detriments of using them for various applications. Highlights Incorporation of CNTs into 304 SS matrix caused grain refinement. Wear rate decreased with CNT content and 4.0 wt% CNT-SS showed minimum wear rate while pristine gave the maximum at both 28°C and 200°C. About 86% and 54% decrease in wear rate were observed for 2.0 wt% CNT-304 SS at 28°C and 200°C respectively as compared to the pristine 304 SS sample. Wear rate at 200°C was slightly more than that of room temperature (28°C) for CNT content < 3 wt%. The 3.0 wt% CNT-304 SS and 4.0 wt% CNT-304 SS showed nearly the same wear rate at both ambient and 200°C test. GRAPHICAL ABSTRACT","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41680568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent progress in the research on natural composite brake pads: a comprehensive review 天然复合材料刹车片的研究进展综述
IF 1.3 Q2 Engineering Pub Date : 2023-07-03 DOI: 10.1080/17515831.2023.2237810
A. G. Joshi, Bharath, S. Basavarajappa
ABSTRACT Brake pads are vital parts of automobiles, where tribological properties are prime concern. Usually, asbestos brake pads were used, which were replaced by copper-based in later years. As brake lining materials have evolved, synthetic friction composites were explored as alternatives. Recent works suggest that, natural composites are promising friction material. However, poor thermal conductivity and frictional stability have limited their applications. Surface treatment of fibers and addition of secondary fillers have improved their possibilities. Thus, hybridization of reinforcements has expanded their range of applications. The present article attempts to review various aspects of brake pads and their testing with attention on natural composites. Their properties were studied to conform their ability to meet desired requirements. The article reviews the studies conducted in recent years on various materials properties related to brake pads. The future potential of natural components in the development of friction composite materials for automotive applications is highlighted.
摘要刹车片是汽车的重要部件,其摩擦学性能是首要关注的问题。通常使用石棉刹车片,在后来的几年里被铜基刹车片取代。随着制动衬片材料的发展,合成摩擦复合材料被探索作为替代品。最近的研究表明,天然复合材料是一种很有前途的摩擦材料。然而,较差的导热性和摩擦稳定性限制了它们的应用。纤维的表面处理和二次填料的添加提高了它们的可能性。因此,增强体的杂交扩大了它们的应用范围。本文试图综述刹车片的各个方面及其测试,重点关注天然复合材料。对它们的性能进行了研究,以符合它们满足所需要求的能力。本文综述了近年来对与刹车片相关的各种材料性能的研究。强调了天然成分在开发用于汽车应用的摩擦复合材料方面的未来潜力。
{"title":"Recent progress in the research on natural composite brake pads: a comprehensive review","authors":"A. G. Joshi, Bharath, S. Basavarajappa","doi":"10.1080/17515831.2023.2237810","DOIUrl":"https://doi.org/10.1080/17515831.2023.2237810","url":null,"abstract":"ABSTRACT Brake pads are vital parts of automobiles, where tribological properties are prime concern. Usually, asbestos brake pads were used, which were replaced by copper-based in later years. As brake lining materials have evolved, synthetic friction composites were explored as alternatives. Recent works suggest that, natural composites are promising friction material. However, poor thermal conductivity and frictional stability have limited their applications. Surface treatment of fibers and addition of secondary fillers have improved their possibilities. Thus, hybridization of reinforcements has expanded their range of applications. The present article attempts to review various aspects of brake pads and their testing with attention on natural composites. Their properties were studied to conform their ability to meet desired requirements. The article reviews the studies conducted in recent years on various materials properties related to brake pads. The future potential of natural components in the development of friction composite materials for automotive applications is highlighted.","PeriodicalId":23331,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46976969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Tribology - Materials, Surfaces & Interfaces
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1