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Extrusion of Silicon Carbide Based Tubular Membrane Incorporated With Coal Fly Ash and Performance Evaluation in Water Treatment 加入煤粉灰的碳化硅挤压管式膜及其在水处理中的性能评估
IF 1.2 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-02-20 DOI: 10.1080/0371750x.2023.2274546
Nilanjan Santra, Dulal Das, Nijhuma Kayal
Development of an efficient membrane from waste resources has been receiving growing interest. The utilization of industrial waste coal fly ash (CFA) for the preparation of SiC based tubular membra...
利用废物资源开发高效膜的兴趣日益浓厚。利用工业废料粉煤灰(CFA)制备基于碳化硅的管状膜,是一种非常有效的方法。
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引用次数: 0
Porcelain Stoneware Tiles Based on Clays Mixture and Recycled Waste Glass Powder: Effect of Soaking Time 基于粘土混合物和回收废玻璃粉的瓷质炻砖:浸泡时间的影响
IF 1.2 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2024-02-20 DOI: 10.1080/0371750x.2023.2274543
Oumarou Ramadan Njindam, Saliou Njuhou, Amadou Pountouenchi, Fadimatou Ngoungoure Mandou, Yacouba Kouotou Mfomboum, Ibrahim Cherif Mountapbeme, Iffat Qoudsiyyah Maury Njoya
The effect of soaking time on the properties of porcelain stoneware tiles based on clay mixture and recycled waste glass powder was studied. Mixture was prepared and fired at 1150°C. During firing,...
研究了浸泡时间对基于粘土混合物和回收废玻璃粉的瓷质炻瓷片性能的影响。混合料经制备后在 1150°C 煅烧。在烧制过程中,...
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引用次数: 0
Doping Fe and Co Induced Modification in the Structural, Optical and Colossal Permittivity of Nb-doped TiO2 Ceramics 掺杂铁和钴会改变掺铌二氧化钛陶瓷的结构、光学和高珀尔帖率
IF 1.2 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-12-12 DOI: 10.1080/0371750x.2023.2269208
Aqeel Aziz Dakhel, Adnan Jaafar
Fe/Nb and Co/Nb co-doped TiO2 ceramics were synthesized by conventional ceramic solid-state reaction process in order to create a high dielectric permittivity substance. Comprehensive structural, o...
采用传统的陶瓷固态反应工艺合成了Fe/Nb和Co/Nb共掺杂TiO2陶瓷,以制备高介电常数物质。研究人员对陶瓷的结构、性能、...
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引用次数: 0
The Effect of Bias Voltage and Acetylene Gas Flow Rate on the Wear Behavior of Diamond-like Carbon Coatings on M2 High-Speed Steel 偏压和乙炔气体流速对 M2 高速钢上类金刚石碳涂层磨损行为的影响
IF 1.2 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-12-06 DOI: 10.1080/0371750x.2023.2263484
Keshav Manjunath, Bharatish Achutarao, Duggirala Venkata Naga Harish, Babu Ramappa, Shanmukha Nagaraj
This paper investigates the impact of bias voltage and acetylene flow rate on the mechanical, structural, and scratch performance of diamond-like carbon (DLC) coated high-speed steel (HSS) M2 commo...
本文研究了偏置电压和乙炔流速对高速钢(HSS)M2 涂层的机械、结构和划痕性能的影响。
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引用次数: 0
Preliminary Investigation on the Application of a Semi-Lightweight Mullite Spherical Solid Waste Material in Ladle Permanent Layer 半轻质莫来石球形固体废料在钢包永久层中的应用初探
4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-11-09 DOI: 10.1080/0371750x.2023.2260848
Lei Peng, Jun Yu, Huizhong Zhao, Han Zhang, Sun Ziheng
AbstractThe heat dissipation of high alumina castables for ladle permanent layer is a topic worthy of attention and solution. It is proposed to use spherical porous mullite (a solid waste) instead of irregular M70 mullite aggregate in castable to reduce the thermal conductivity and realize a high-strength and lightweight design. The effect of spherical porous mullite content in castables on thermal conductivity, service strength and thermal shock resistance were discussed. The results demonstrated that the substitution amount of spherical porous mullite increased, the bulk densities of the castables dropped from 2.68 to 2.38 g.cm−3, the apparent porosity rose from 15.5 to 25.0%. The thermal conductivities reduced from 1.174 to 0.585 W.m−1.K−1 (1000°C), which can be ascribed to the increased porosity extending the heat transfer path. Furthermore, owing to the high strength of spherical mullite and its excellent bonding with matrix, the mechanical strength of castable was at a high strength level, with modulus of rupture of 18 M Pa and cold crushing strength of 76 MPa at the spherical porous mullite completely substituting M 70 mullite. The semi-lightweight and low thermal conductivity castable containing spherical porous mullite show great application potential in the ladle permanent layer.Keywords: Spherical porous mulliteM70 mulliteLadleInsulating refractory castables
摘要钢包永久层用高铝浇注料的散热问题是一个值得关注和解决的课题。建议在浇注料中使用球形多孔莫来石(固体废弃物)代替不规则的M70莫来石骨料,以降低导热系数,实现高强轻量化设计。讨论了浇注料中球形多孔莫来石含量对浇注料导热性、使用强度和抗热震性的影响。结果表明:球形多孔莫来石取代量增加,浇注料容重由2.68 g.cm−3下降到2.38 g.cm−3,表观孔隙度由15.5%上升到25.0%;热导率由1.174降至0.585 w m−1。K−1(1000°C),这可以归因于孔隙率的增加延长了传热路径。此外,由于球形莫来石的高强度和与基体的良好结合,使得浇注料的机械强度处于较高的强度水平,球形多孔莫来石完全取代m70莫来石的断裂模量为18 MPa,冷压强度为76 MPa。含球形多孔莫来石的半轻质低导热浇注料在钢包永久层中具有很大的应用潜力。关键词:球形多孔莫来石;70;莫来石
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引用次数: 0
The Theoretical Ballistic Performance of Alumina Ceramics and the Effect of Nano Oxides Addition Using Finite Element Analysis 氧化铝陶瓷的理论弹道性能及纳米氧化物对其影响的有限元分析
4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-11-09 DOI: 10.1080/0371750x.2023.2240379
Partha Haldar, Mainak Ghosh, Tarik Hassan, Tapas Kumar Bhattacharya, Nipu Modak
AbstractThe present investigation has turned on the effect of nano CuO and TiO2 as a dopant on ballistic performance of sintered alumina armours and its results are simulated using finite element analysis. The model was constructed on armor-backing plate (Al6061-T6) assembly with a steel made core and copper made outer jacketed bullet at high velocity (820 m/s) by Ansys workbench. The depth of penetration of bullet drastically reduces to 36.17% due to addition of 2 wt% nano CuO with respect to pure alumina. The same optimized effect shown by 1 wt% nano TiO2 is about 40.42%. The residual velocity of bullet gradually decreases with time and there is more reduction of residual velocity of 38% and 56.82% at 140 μs by addition of 2 wt% nano CuO and 1 wt% nano TiO2 respectively with respect to pure alumina. The alumina armours with 1 wt% nano TiO2 addition showed the best ballistic performance as compared to nano CuO.Keywords: Ballistic performanceAlumina7.62 M61 AP (armour piercing) bulletDepth of penetration
摘要本文研究了纳米CuO和TiO2作为掺杂剂对烧结氧化铝装甲弹道性能的影响,并对其结果进行了有限元模拟。利用Ansys workbench以820 m/s的高速度在钢芯、铜质外护套弹的Al6061-T6装甲背板组件上构建模型。与纯氧化铝相比,加入2 wt%纳米CuO后,子弹的穿透深度大幅降低至36.17%。1 wt%纳米TiO2的优化效果约为40.42%。在140 μs时,添加2 wt%的纳米CuO和1 wt%的纳米TiO2,子弹的残余速度分别比纯氧化铝降低38%和56.82%。与纳米CuO相比,添加1wt %纳米TiO2的氧化铝装甲显示出最好的弹道性能。关键词:弹道性能alumina7.62 M61穿甲弹穿深
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引用次数: 0
Ceramic Manufacturing Workforce in India: Trends, Relative Earnings and Its Determinants 印度陶瓷制造业劳动力:趋势、相对收入及其决定因素
4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-11-08 DOI: 10.1080/0371750x.2023.2237539
Dikshika Jakhar, Neeru Sidana, Jaspal Singh, Satinder Singh
AbstractIndia’s ceramic industry, characterized by the transitional shift from traditional craft to modern industry, is imbibed to economic growth and development. It has witnessed a dynamic change from all hands-on deck to no hands-on deck. With an aim to understand the change in ceramic manufacturing workforce in India, the paper has analyzed the latest trends of ceramic workforce participation over the time period 1993-94 to 2020-21 using the national sample survey office (NSSO) employment and unemployment (E&U) survey data from 1993-94 to 2011-12 and periodical labour force survey (PLFS) data from 2017-18 to 2020-21. The results showcased that there was a declining trend in the overall workforce participation rate at the end of E&U survey (2011-12), however, after replacing NSSO E&U survey data with PLFS data the overall workforce participation rate showed an increasing trend. However, the study found that there was a continuous decline in the ceramic workforce as the total per cent of overall workforce. Further study highlighted that there is a wide gap between the perday earnings of ceramic and non-ceramic workers. Non-ceramic workers have high per day earning as compared to the ceramic workers that hampers the willingness of the workers to work in this industry. The study has established the impact of various socio-economic variables on per day earnings of the workers using Tobit regression model. The level of education has a positive and significant relation with per day earning of the ceramic workers. Education helps in accelerating the per day earning of the ceramic workers. Furthermore technical education have a highest positive impact on the per day earnings of the ceramic workers.Keywords: Ceramic workforceManufacturingTobit regression modelIndia
【摘要】印度的陶瓷产业正处于由传统工艺向现代工业转型的转型期,其经济增长与发展与之密不可分。它见证了从全操作甲板到无操作甲板的动态变化。为了了解印度陶瓷制造业劳动力的变化,本文利用1993-94年至2011-12年的国家抽样调查办公室(NSSO)就业和失业(E&U)调查数据和2017-18年至2020-21年的定期劳动力调查(PLFS)数据,分析了1993-94年至2020-21年期间陶瓷劳动力参与的最新趋势。结果显示,在2011-12年E&U调查结束时,整体劳动力参与率呈下降趋势,而在用PLFS数据取代NSSO E&U调查数据后,整体劳动力参与率呈上升趋势。然而,该研究发现,陶瓷劳动力占总劳动力的比例持续下降。进一步的研究表明,陶瓷工人和非陶瓷工人的日收入差距很大。与陶瓷工人相比,非陶瓷工人的日收入较高,这阻碍了工人在该行业工作的意愿。本研究利用Tobit回归模型建立了各种社会经济变量对工人日收入的影响。文化程度与陶工日收入呈显著正相关。教育有助于加快陶瓷工人的日常收入。此外,技术教育对陶瓷工人的日收入有最高的积极影响。关键词:陶瓷劳动力制造业tobit回归模型印度
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引用次数: 0
Mineralogical and Physico-Chemical Characterization of Arslanlar Clay for Potential Industrial Applications 具有工业应用潜力的arslar粘土的矿物学和物理化学表征
4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-11-02 DOI: 10.1080/0371750x.2023.2233999
İlker Özkan, Hakan Elçi, Ramazan Hacımustafaoğlu
AbstractThis paper is a study from mineralogical and physico-chemical points of view about the possibility of using Arslanlar clay in tile and brick industry. Firstly, chemical analysis, X-ray diffraction (XRD), differential thermal analysis/thermogravimetry and plasticity measurements were performed to determine the unfired characterization of the clay sample. It was observed that illite, smectite, kaolinite, calcite, hematite, orthoclase and quartz were the main minerals. Plasticity tests revealed that Arslanlar clay was very high plastic clay. Then the clay test samples were prepared by pressing and firing separately at temperatures between 850° and 1100°C to evaluate physicochemical characteristics. Water absorption, linear shrinkage, bulk density, bending strength tests and colour measurement were performed. Also the fired samples were analyzed by XRD and scanning electron microscopy. It was observed that the porosity decreased and the densification increased with increasing temperature, especially above 1050°C. Evaluations concluded that this clay can be used in production of structural ceramics and also pottery.Keywords: Arslanlar clayCharacterizationMineralogyPhysico-chemical properties
摘要本文从矿物学和物理化学的角度探讨了arslar粘土在瓦砖工业中应用的可能性。首先,通过化学分析、x射线衍射(XRD)、差热分析/热重和塑性测量来确定粘土样品的未烧制特性。主要矿物为伊利石、蒙脱石、高岭石、方解石、赤铁矿、正长石和石英。塑性试验表明,Arslanlar粘土为高塑性粘土。然后在850 ~ 1100℃的温度下分别压制和烧制粘土试样,评价其理化特性。进行了吸水率、线收缩率、容重、抗弯强度试验和颜色测定。并用XRD和扫描电镜对烧结样品进行了分析。结果表明,随着温度的升高,孔隙率降低,致密化程度提高,特别是在1050℃以上。评价结果表明,这种粘土可用于生产结构陶瓷和陶器。关键词:arslar粘土;表征;矿物学
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引用次数: 0
Synthesis and Characterization of Hydrothermal Synthesized Ultra-Red CdS 1− x Se x Pigment 水热合成超红色CdS 1−x Se x颜料的合成与表征
4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-10-13 DOI: 10.1080/0371750x.2023.2236658
Kun Li, Qingwei Luo, Ruxue Bai, Yanmin Li, Chun Tang, Yiyue Wang, Xiao Wei
AbstractUltra-red pigment is in urgent need to enrich the colour range as well as to improve the quality of ceramic product. In this study, ultra-red CdS1−xSex pigments (CP) were synthesized through hydrothermal technique. The effects of S/Se ratio on the structural and optical properties of CPs were investigated. CPs were characterized by XRD, ICP, SEM and UV-vis techniques. The colorimetric parameters of CPs were measured as also their band-gaps were estimated based on Tauc plot method. Furthermore, detailed formation mechanism of CdS1−xSex has been elucidated. The results demonstrate that different compositions of CdS1−xSex can be facilely obtained by adjusting the R value (starting S/Se molar ratio); when R is equal to 0.67 and 0.83, the prepared samples are CdS0.75Se0.25, when R is equal to 1.00, 1.17 and 1.33, the prepared samples are CdS0.571Se0.429. It is found that excessive S2− plays critical role in CdS1−xSex formation. CP prepared with R=1.00 owns L*=44.69, a*=49.93, b*=22.66, implying an excellent red colour, which indicates potential use as an ultra-red ceramic pigment.Keywords: CdS1−xSexUltra-red pigmentExcessive S2−Colour performance
摘要为了丰富陶瓷产品的颜色范围,提高陶瓷产品的质量,需要使用超红色颜料。本研究采用水热法合成了超红色CdS1−xSex色素(CP)。研究了S/Se比对CPs结构和光学性能的影响。采用XRD、ICP、SEM和UV-vis技术对CPs进行了表征。测定了cp的比色参数,并根据Tauc图法估计了其带隙。此外,CdS1−xSex的形成机制也得到了详细的阐明。结果表明:通过调节R值(起始S/Se摩尔比),可以很容易地得到不同成分的CdS1−xSex;当R = 0.67、0.83时,制得的样品为CdS0.75Se0.25,当R = 1.00、1.17、1.33时,制得的样品为CdS0.571Se0.429。发现过量的S2−在CdS1−xSex的形成中起关键作用。当R=1.00时制备的CP具有L*=44.69, a*=49.93, b*=22.66,具有优异的红色,具有作为超红色陶瓷颜料的潜力。关键词:CdS1−xSexUltra-red pigment过量的S2−显色性能
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引用次数: 0
Chromium Doped Glasses for Photonic Applications: A Brief Review and Prospects 光子应用中的掺铬玻璃:综述与展望
IF 1.2 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS Pub Date : 2023-09-20 DOI: 10.1080/0371750x.2023.2227665
Debjit Dutta, Anirban Dhar, Shyamal Das, Mukul Chandra Paul
This review article emphasizes the study and realization of chromium doped bulk glasses as well as optical fibers elaborating the optical properties of various valence states of chromium in bulk gl...
本文着重介绍了掺杂铬块状玻璃和光纤的研究与实现,阐述了块状玻璃中不同价态铬的光学性质。
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引用次数: 0
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Transactions of the Indian Ceramic Society
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