Abstract Ammonia is a premium energy carrier with high content of hydrogen. However, energy storage and utilization via ammonia still confront multiple challenges. Here, we review recent progress and discuss challenges for the key steps of energy storage and utilization via ammonia (including hydrogen production, ammonia synthesis and ammonia utilization). In hydrogen production, we focus on important processes and catalytic designs for conversion of carbon feedstocks and water into hydrogen. To reveal crucial challenges of ammonia synthesis, catalytic designs and mechanisms are summarized and analyzed, in thermocatalytic synthesis, electrocatalytic synthesis and photocatalytic synthesis of ammonia. Further, in ammonia utilization, important processes and catalytic designs are outlined for ammonia decomposition, ammonia fuel cells and ammonia combustion. The goal of this review is to stimulate development of low-cost and eco-friendly ways for energy storage and utilization via ammonia.
{"title":"Progress and challenges in energy storage and utilization via ammonia","authors":"Chongqi Chen, Yanliang Zhou, Huihuang Fang, Xiaobo Peng, Lilong Jiang","doi":"10.1007/s44251-023-00013-6","DOIUrl":"https://doi.org/10.1007/s44251-023-00013-6","url":null,"abstract":"Abstract Ammonia is a premium energy carrier with high content of hydrogen. However, energy storage and utilization via ammonia still confront multiple challenges. Here, we review recent progress and discuss challenges for the key steps of energy storage and utilization via ammonia (including hydrogen production, ammonia synthesis and ammonia utilization). In hydrogen production, we focus on important processes and catalytic designs for conversion of carbon feedstocks and water into hydrogen. To reveal crucial challenges of ammonia synthesis, catalytic designs and mechanisms are summarized and analyzed, in thermocatalytic synthesis, electrocatalytic synthesis and photocatalytic synthesis of ammonia. Further, in ammonia utilization, important processes and catalytic designs are outlined for ammonia decomposition, ammonia fuel cells and ammonia combustion. The goal of this review is to stimulate development of low-cost and eco-friendly ways for energy storage and utilization via ammonia.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"108 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135138134","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}
Abstract During the laser powder bed fusion (LPBF) process, powder spattering is a crucial phenomenon to consider. This primarily arises from the intense interaction between the laser and the material. The ensuing metal vapor, induced by the evaporation process, plays a pivotal role in instigating powder spatter, which significantly impacts the quality of the resultant part. One of the pressing challenges in the field is the capture and quantitative investigation of the interplay between the melt, vapor, and powder. Such lack of clarity impedes our path to achieving defect-minimized LPBF production. In this study, we propose a physics-based model that elucidates the integrated interaction of vapor, melt, and powder using a coupled DEM-CFD approach. Our findings indicate that the vapor flow undergoes four distinct states: initialization, continuation, transition, and interruption. These states correlate closely with the progression of vapor-induced depressions and powder spattering. As compared to the existing experimental data, our model provides a more precise and comprehensive understanding of vapor flow states and their associated velocity magnitudes. Furthermore, we identify three distinct patterns of powder spatter: inward, upward, and outward flows, where powder inward flow is mainly caused by shielding gas, while the upward and outward patterns are induced by metal vapor.
{"title":"Revealing melt-vapor-powder interaction towards laser powder bed fusion process via DEM-CFD coupled model","authors":"Weihao Yuan, Hui Chen, Chong Peng, Rocco Lupoi, Shuo Yin","doi":"10.1007/s44251-023-00014-5","DOIUrl":"https://doi.org/10.1007/s44251-023-00014-5","url":null,"abstract":"Abstract During the laser powder bed fusion (LPBF) process, powder spattering is a crucial phenomenon to consider. This primarily arises from the intense interaction between the laser and the material. The ensuing metal vapor, induced by the evaporation process, plays a pivotal role in instigating powder spatter, which significantly impacts the quality of the resultant part. One of the pressing challenges in the field is the capture and quantitative investigation of the interplay between the melt, vapor, and powder. Such lack of clarity impedes our path to achieving defect-minimized LPBF production. In this study, we propose a physics-based model that elucidates the integrated interaction of vapor, melt, and powder using a coupled DEM-CFD approach. Our findings indicate that the vapor flow undergoes four distinct states: initialization, continuation, transition, and interruption. These states correlate closely with the progression of vapor-induced depressions and powder spattering. As compared to the existing experimental data, our model provides a more precise and comprehensive understanding of vapor flow states and their associated velocity magnitudes. Furthermore, we identify three distinct patterns of powder spatter: inward, upward, and outward flows, where powder inward flow is mainly caused by shielding gas, while the upward and outward patterns are induced by metal vapor.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"39 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135093351","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}
Abstract The corrosion and wear of N80 pipeline in oil and gas field environment has always been an urgent problem to be solved in the field of oil and gas exploitation. DLC film is considered to be an effective material for prolonging the service life of pipeline due to its excellent properties. However, it is very difficult to deposit a uniform DLC film on the inner surface of long pipeline. In this paper, DLC film was deposited on the inner surface of a 1 m-long N80 pipeline with an inner diameter of 75 mm by hollow cathode plasma enhanced chemical vapor deposition (HC-PECVD) using the pipeline itself as the deposition chamber and cathode. The uniformity of microstructure, mechanical properties, corrosion resistance and tribological properties of DLC film were discussed. The results show that the DLC film deposited on the inner surface of N80 long pipeline by HC-PECVD equipment possesses excellent axial uniformity. The deposition of DLC film increases the corrosion potential and reduces the corrosion current density, which greatly improves the corrosion resistance of N80 pipeline. In addition, the deposition of DLC film also reduces the friction coefficient and wear rate, which greatly improves the wear resistance of N80 pipeline. Therefore, the deposition of DLC film is an effective protection method for the inner surface of N80 pipeline, which prolongs the service life of the pipeline. HC-PECVD equipment with pipeline as cavity uniformly deposits DLC film on the inner surface of long pipeline, which is a potential deposition method to prolong the service life of long pipeline in oil and gas exploitation.
{"title":"Deposition of DLC film on the inner surface of N80 pipeline by hollow cathode PECVD","authors":"Zhengyu Liu, Chenglong Mou, Pingmei Yin, Xueqian Cao, Guangan Zhang, Qunji Xue","doi":"10.1007/s44251-023-00012-7","DOIUrl":"https://doi.org/10.1007/s44251-023-00012-7","url":null,"abstract":"Abstract The corrosion and wear of N80 pipeline in oil and gas field environment has always been an urgent problem to be solved in the field of oil and gas exploitation. DLC film is considered to be an effective material for prolonging the service life of pipeline due to its excellent properties. However, it is very difficult to deposit a uniform DLC film on the inner surface of long pipeline. In this paper, DLC film was deposited on the inner surface of a 1 m-long N80 pipeline with an inner diameter of 75 mm by hollow cathode plasma enhanced chemical vapor deposition (HC-PECVD) using the pipeline itself as the deposition chamber and cathode. The uniformity of microstructure, mechanical properties, corrosion resistance and tribological properties of DLC film were discussed. The results show that the DLC film deposited on the inner surface of N80 long pipeline by HC-PECVD equipment possesses excellent axial uniformity. The deposition of DLC film increases the corrosion potential and reduces the corrosion current density, which greatly improves the corrosion resistance of N80 pipeline. In addition, the deposition of DLC film also reduces the friction coefficient and wear rate, which greatly improves the wear resistance of N80 pipeline. Therefore, the deposition of DLC film is an effective protection method for the inner surface of N80 pipeline, which prolongs the service life of the pipeline. HC-PECVD equipment with pipeline as cavity uniformly deposits DLC film on the inner surface of long pipeline, which is a potential deposition method to prolong the service life of long pipeline in oil and gas exploitation.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135667478","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}
Pub Date : 2023-10-18DOI: 10.1007/s44251-023-00010-9
Yue Sun, Dalei Song, Jing Yu, Jiahui Zhu, Jingyuan Liu, Rongrong Chen, Qi Liu, Peili Liu, Jun Wang
Abstract The limited dispersibility and lack of active anti-corrosion properties of graphene oxide (GO) have hindered its application in corrosion resistance. In this study, we graft the corrosion inhibitor benzotriazole (BTA) on the surface of GO to achieve pH response release, providing active corrosion protection for epoxy modified polyurethane (EP-PU) coating. An environmentally friendly composite material with a sandwich-like structure was synthesized by in-situ polymerization of pyrrole to improve GO dispersion and prevent rapid release of BTA. The electrochemical impedance spectroscopy (EIS) shows that adding 0.15% GBP enhances the coating's anti-corrosion performance. The dual functions of passive and active corrosion enable the GBP/EP-PU coating to provide long-term corrosion protection for metal substrates.
{"title":"Improving activity and barrier properties of epoxy modified polyurethane coating with in-situ polymerized polypyrrole functionalized graphene oxide","authors":"Yue Sun, Dalei Song, Jing Yu, Jiahui Zhu, Jingyuan Liu, Rongrong Chen, Qi Liu, Peili Liu, Jun Wang","doi":"10.1007/s44251-023-00010-9","DOIUrl":"https://doi.org/10.1007/s44251-023-00010-9","url":null,"abstract":"Abstract The limited dispersibility and lack of active anti-corrosion properties of graphene oxide (GO) have hindered its application in corrosion resistance. In this study, we graft the corrosion inhibitor benzotriazole (BTA) on the surface of GO to achieve pH response release, providing active corrosion protection for epoxy modified polyurethane (EP-PU) coating. An environmentally friendly composite material with a sandwich-like structure was synthesized by in-situ polymerization of pyrrole to improve GO dispersion and prevent rapid release of BTA. The electrochemical impedance spectroscopy (EIS) shows that adding 0.15% GBP enhances the coating's anti-corrosion performance. The dual functions of passive and active corrosion enable the GBP/EP-PU coating to provide long-term corrosion protection for metal substrates.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"14 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135823253","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}
Pub Date : 2023-10-13DOI: 10.1007/s44251-023-00011-8
Biao Zhao, Jianhao Peng, Wenfeng Ding
Abstract SiC particle reinforced Al matrix composites (SiC p /Al MMCs) have been widely used in aerospace and other fields due to their excellent mechanical properties, and their machined surface integrity is crucial for the use of new generation high-tech equipment. In order to enhance the understanding and regulation of machined surface integrity in Al matrix composites, this article provides a comprehensive review of the research advancements regarding influential factors, damage characteristics, creation techniques for machined surfaces, as well as technologies for controlling machined surface integrity both domestically and internationally. The present study discusses the key issues and solutions in the processing of aluminum matrix composite materials, along with examining the extent and mechanism of various energy field assistance influence on the surface integrity of mechanically processed aluminum matrix composites. Ultimately, this article proposes future research prospects for achieving high surface integrity machining of aluminum matrix composites.
SiC颗粒增强Al基复合材料(SiC p /Al MMCs)由于其优异的力学性能在航空航天等领域得到了广泛的应用，其加工表面的完整性对新一代高科技装备的使用至关重要。为了提高对铝基复合材料加工表面完整性的认识和调控，本文综述了国内外在影响因素、损伤特征、加工表面形成技术以及加工表面完整性控制技术等方面的研究进展。探讨了铝基复合材料机械加工过程中存在的关键问题及解决方法，探讨了各种能量场辅助对机械加工铝基复合材料表面完整性的影响程度及机理。最后，提出了今后实现铝基复合材料高表面完整性加工的研究前景。
{"title":"Machined surface formation and integrity control technology of SiCp/Al composites: a review","authors":"Biao Zhao, Jianhao Peng, Wenfeng Ding","doi":"10.1007/s44251-023-00011-8","DOIUrl":"https://doi.org/10.1007/s44251-023-00011-8","url":null,"abstract":"Abstract SiC particle reinforced Al matrix composites (SiC p /Al MMCs) have been widely used in aerospace and other fields due to their excellent mechanical properties, and their machined surface integrity is crucial for the use of new generation high-tech equipment. In order to enhance the understanding and regulation of machined surface integrity in Al matrix composites, this article provides a comprehensive review of the research advancements regarding influential factors, damage characteristics, creation techniques for machined surfaces, as well as technologies for controlling machined surface integrity both domestically and internationally. The present study discusses the key issues and solutions in the processing of aluminum matrix composite materials, along with examining the extent and mechanism of various energy field assistance influence on the surface integrity of mechanically processed aluminum matrix composites. Ultimately, this article proposes future research prospects for achieving high surface integrity machining of aluminum matrix composites.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853326","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}
Pub Date : 2023-10-12DOI: 10.1007/s44251-023-00009-2
Ziwei Wang, Zhenhua Zhang
Abstract Catalytic CO 2 hydrogenation to valuable chemicals is an excellent approach to address the increasingly serious “greenhouse effect” caused by CO 2 emission generated from the utilizations of nonrenewable fossil energies, while such a process is limited by chemical inertia and thermal stability of the CO 2 molecule and complex hydrogenation routes. In this review, we first summarized the recent progresses of metal-oxide nanocatalysts considered as a category of the most promising catalysts in CO 2 hydrogenation to value-added C1 chemicals including CH 4 /CO, formic acid/formate, and methanol. These studies involve with different structural factors affecting the metal-oxide interfacial catalysis including the structures of both the metals (type, particle size, morphology/crystal plane, and bimetal alloy) and the supports (type, particle size, crystal phase, morphology/crystal plane, and composite) and their (strong) metal-support interactions so as to identify the key factor determining the reaction activity, product selectivity, and catalytic stability in CO 2 hydrogenation. Finally, we further discuss challenging coupling with future research opportunities for tunable interfacial catalysis of metal-oxide nanocatalysts in CO 2 conversion.
{"title":"Interfacial catalysis of metal-oxide nanocatalysts in CO2 hydrogenation to value-added C1 chemicals","authors":"Ziwei Wang, Zhenhua Zhang","doi":"10.1007/s44251-023-00009-2","DOIUrl":"https://doi.org/10.1007/s44251-023-00009-2","url":null,"abstract":"Abstract Catalytic CO 2 hydrogenation to valuable chemicals is an excellent approach to address the increasingly serious “greenhouse effect” caused by CO 2 emission generated from the utilizations of nonrenewable fossil energies, while such a process is limited by chemical inertia and thermal stability of the CO 2 molecule and complex hydrogenation routes. In this review, we first summarized the recent progresses of metal-oxide nanocatalysts considered as a category of the most promising catalysts in CO 2 hydrogenation to value-added C1 chemicals including CH 4 /CO, formic acid/formate, and methanol. These studies involve with different structural factors affecting the metal-oxide interfacial catalysis including the structures of both the metals (type, particle size, morphology/crystal plane, and bimetal alloy) and the supports (type, particle size, crystal phase, morphology/crystal plane, and composite) and their (strong) metal-support interactions so as to identify the key factor determining the reaction activity, product selectivity, and catalytic stability in CO 2 hydrogenation. Finally, we further discuss challenging coupling with future research opportunities for tunable interfacial catalysis of metal-oxide nanocatalysts in CO 2 conversion.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969146","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}
Pub Date : 2023-09-27DOI: 10.1007/s44251-023-00008-3
Shengkai Gong
{"title":"Announcement for a new journal: Surface Science and Technology","authors":"Shengkai Gong","doi":"10.1007/s44251-023-00008-3","DOIUrl":"https://doi.org/10.1007/s44251-023-00008-3","url":null,"abstract":"","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477176","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}
Abstract Aero-engine is a key part of aircraft, the operating temperature of which is being pushed to unprecedented levels for higher engine efficiency and performance. To accomplish higher gas-inlet temperature of aero-engines, applying thermal barrier coatings (TBCs) on hot-section metallic components, or even replacing some of the metallic components in aero-engines with ceramic-matrix composites (CMCs) and applying environmental-barrier coatings (EBCs) on them, are effective methods and have been widely accepted. On the other hand, increasing aero-engines operating temperature causes the aircraft more easily be detected, thus stealth coatings are necessary for engines. Except the hottest part in aero-engines, other parts may not need TBCs or EBCs due to the relatively low operating temperature, but they still need protection from oxidation and corrosion. Hence, corrosion-resistant coatings are essential. In this paper, the latest progress of the above high-temperature protective coatings, i.e., TBCs, EBCs, stealth coatings and corrosion-resistant coatings is reviewed, mainly including their materials, fabrication technologies and performance. In addition, due to the harsh operating environment, these protective coatings face many threats such as calcia-magnesia-aluminosilicates (CMAS) attack, causing premature failure of the coatings, which is also concerned in this paper. The work would provide a comprehensive understanding on the high-temperature protective coatings in aero-engines and guidance for developing advanced protective coatings for next-generation aero-engines.
{"title":"Progress on high-temperature protective coatings for aero-engines","authors":"Lei Guo, Wenting He, Wenbo Chen, Zhaolu Xue, Jian He, Yiqian Guo, Yang Wu, Lihua Gao, Dongqing Li, Zhao Zhang, Liangliang Wei, Yuyi Gao, Tiehao Zhang, Jiao Qiao, Qianhui Li, Hongbo Guo","doi":"10.1007/s44251-023-00005-6","DOIUrl":"https://doi.org/10.1007/s44251-023-00005-6","url":null,"abstract":"Abstract Aero-engine is a key part of aircraft, the operating temperature of which is being pushed to unprecedented levels for higher engine efficiency and performance. To accomplish higher gas-inlet temperature of aero-engines, applying thermal barrier coatings (TBCs) on hot-section metallic components, or even replacing some of the metallic components in aero-engines with ceramic-matrix composites (CMCs) and applying environmental-barrier coatings (EBCs) on them, are effective methods and have been widely accepted. On the other hand, increasing aero-engines operating temperature causes the aircraft more easily be detected, thus stealth coatings are necessary for engines. Except the hottest part in aero-engines, other parts may not need TBCs or EBCs due to the relatively low operating temperature, but they still need protection from oxidation and corrosion. Hence, corrosion-resistant coatings are essential. In this paper, the latest progress of the above high-temperature protective coatings, i.e., TBCs, EBCs, stealth coatings and corrosion-resistant coatings is reviewed, mainly including their materials, fabrication technologies and performance. In addition, due to the harsh operating environment, these protective coatings face many threats such as calcia-magnesia-aluminosilicates (CMAS) attack, causing premature failure of the coatings, which is also concerned in this paper. The work would provide a comprehensive understanding on the high-temperature protective coatings in aero-engines and guidance for developing advanced protective coatings for next-generation aero-engines.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477394","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}
Pub Date : 2023-09-27DOI: 10.1007/s44251-023-00003-8
Min-Hao Zhu, Xiao-Qiang Fan, Zhen-bing Cai, Jin-Fang Peng, Qi Sun
Abstract This paper introduces the definition, classification, and running modes of fretting damage, as well as industrial phenomena of fretting damage cases. It is detail reviewed the progress of two-types fretting map theory (running condition fretting map-RCFM and material response fretting map-MRFM), and outlines the protection strategy of fretting wear according to the fretting map theory, i.e. eliminating the mixed fretting regime and slip regime, increasing the strength of the contact surface, reducing the coefficient of friction, and selecting and matching of materials. Several surface engineering techniques (such as PVD, laser surface modification technology, bonded solid lubricant coating, thermal spraying coating, and micro-arc oxidation coating) against fretting wear are reviewed, several mechanisms to alleviating fretting wear are proposed as well as a collection of practical examples of surface engineering designs to anti-fretting wear. Base on the review of previous studies, mechanisms of surface engineering technologies for alleviating fretting wear have been proposed. In addition, the content and process of surface engineering design are introduced in this paper. A quantitative evaluation method using polar coordinate diagram is applied to choose appropriate surface engineering technology. Finally, taking the locking pin of variable gauge train as an example, the process of surface engineering design is further expounded.
{"title":"Surface engineering design on alleviating fretting wear: a review","authors":"Min-Hao Zhu, Xiao-Qiang Fan, Zhen-bing Cai, Jin-Fang Peng, Qi Sun","doi":"10.1007/s44251-023-00003-8","DOIUrl":"https://doi.org/10.1007/s44251-023-00003-8","url":null,"abstract":"Abstract This paper introduces the definition, classification, and running modes of fretting damage, as well as industrial phenomena of fretting damage cases. It is detail reviewed the progress of two-types fretting map theory (running condition fretting map-RCFM and material response fretting map-MRFM), and outlines the protection strategy of fretting wear according to the fretting map theory, i.e. eliminating the mixed fretting regime and slip regime, increasing the strength of the contact surface, reducing the coefficient of friction, and selecting and matching of materials. Several surface engineering techniques (such as PVD, laser surface modification technology, bonded solid lubricant coating, thermal spraying coating, and micro-arc oxidation coating) against fretting wear are reviewed, several mechanisms to alleviating fretting wear are proposed as well as a collection of practical examples of surface engineering designs to anti-fretting wear. Base on the review of previous studies, mechanisms of surface engineering technologies for alleviating fretting wear have been proposed. In addition, the content and process of surface engineering design are introduced in this paper. A quantitative evaluation method using polar coordinate diagram is applied to choose appropriate surface engineering technology. Finally, taking the locking pin of variable gauge train as an example, the process of surface engineering design is further expounded.","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477389","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}
Pub Date : 2023-09-27DOI: 10.1007/s44251-023-00002-9
Liangge Xu, Shuai Guo, Victor Ralchenko, Gang Gao, Sam Zhang, Jiaqi Zhu
Abstract In recent years, there has been a growing interest and research focus on infrared optical thin films as essential components in infrared optical systems. In practical applications, extreme environmental factors such as aerodynamic heating and mechanical stresses, electromagnetic interferences, laser interferences, sand erosions, and rain erosions all lead to issues including cracking, wrinkling, and delaminations of infrared thin films. Extreme application environment imposes stringent requirements on functional films, necessitating high surface hardness, stability, and adhesion. Additionally, for multispectral optical transmissions, infrared optical thin films are expected to exhibit high transmittance in the visible and far-infrared wavelength bands while possessing tunability and optical anti-reflection properties in specific wavelength ranges. Electromagnetic shielding requires superior electrical performance, while resisting laser interference demands rapid phase change capabilities. This paper focuses on current research progresses in infrared optical thin films under extreme conditions such as opto, electro, thermos and mechanical environments. Table of Contents Graphic gives detailed outline. Future opportunities and challenges are also highlighted. Graphical Abstract
{"title":"Progress in infrared transparencies under opto electro thermo and mechanical environments","authors":"Liangge Xu, Shuai Guo, Victor Ralchenko, Gang Gao, Sam Zhang, Jiaqi Zhu","doi":"10.1007/s44251-023-00002-9","DOIUrl":"https://doi.org/10.1007/s44251-023-00002-9","url":null,"abstract":"Abstract In recent years, there has been a growing interest and research focus on infrared optical thin films as essential components in infrared optical systems. In practical applications, extreme environmental factors such as aerodynamic heating and mechanical stresses, electromagnetic interferences, laser interferences, sand erosions, and rain erosions all lead to issues including cracking, wrinkling, and delaminations of infrared thin films. Extreme application environment imposes stringent requirements on functional films, necessitating high surface hardness, stability, and adhesion. Additionally, for multispectral optical transmissions, infrared optical thin films are expected to exhibit high transmittance in the visible and far-infrared wavelength bands while possessing tunability and optical anti-reflection properties in specific wavelength ranges. Electromagnetic shielding requires superior electrical performance, while resisting laser interference demands rapid phase change capabilities. This paper focuses on current research progresses in infrared optical thin films under extreme conditions such as opto, electro, thermos and mechanical environments. Table of Contents Graphic gives detailed outline. Future opportunities and challenges are also highlighted. Graphical Abstract","PeriodicalId":17031,"journal":{"name":"Journal of Surface Science and Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477391","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}
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