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| 1 | Combined effect of the use of carbon fiber and seawater and the molecular structure on the tribological behavior of polymer materials显示文摘The combined effect of the use of carbon fiber and seawater and the molecular structure on the tribological behavior of various polymer materials under natural seawater lubrication was investigated. After the investigation, the wear morphology of the contact surface was observed by a laser scanning confocal microscope, and the texture of the wear scars and tracks were presented in 3 D profiles. Moreover, the mechanism of mixed lubrication and wear resistance was analyzed. The results demonstrated that the friction coefficient of carbon fiber-reinforced polyetheretherketone(CFRPEEK) is the lowest and fluctuates at approximately 0.11. Moreover, the seven polymer materials in ascending order of friction coefficients are CFRPEEK, carbon fiber-reinforced polyamide-imide, polytetrafluoroethylene, polyoxymethylene, polyetheretherketone(PEEK), acrylonitrile butadiene styrene resin, and glass fiber–epoxy resin. More critically, the simultaneous incorporation of deposition, polymeric scrap, hydrophilic groups, and seawater resulted in a decrease in the friction and wear of polymer materials under seawater lubrication. This observation implies that a synergistic friction-reducing and wear-resistant effect exists between carbon fiber, seawater, and the molecular structure of PEEK. As a result, a highly effective polymer material was discovered, CFRPEEK, which has the lowest friction coefficient of 0.11 and lowest wear rate of 2 × 10^(–5) mm^3?(N?m)^(-1) among the polymer materials; this validates the selection of dual friction pairs for seawater hydraulic components. | Zhiqiang WANG Jing NI Dianrong GAO | 2018 | Friction2018，6，2： | 11 |
| 2 | 粉末烧结法和铸造法制备ZrO_(2)增韧Al_(2)O_(3)陶瓷颗粒增强高铬铸铁基复合材料及其耐磨性能显示文摘将粒径为1~2 mm的ZrO_(2)增韧Al_(2)O_(3)陶瓷颗粒(ZTA_(p))、高铬合金粉末和黏结剂混合真空烧结制备蜂窝状预制体,再浇注高铬铸铁液制备出ZTA_(p)增强高铬铸铁基复合材料。采用SEM、EDS、XRD分析复合材料的界面微观结构和物相组成,通过三体磨损试验评价复合材料的耐磨性能。结果表明,烧结高铬铸铁基体在铸造过程中发生重熔,与铸造高铬铸铁基体呈冶金结合,ZTA_(p)与金属基体界面结合致密,无裂纹、气孔等缺陷。复合材料三体耐磨性能达到高铬铸铁的3倍以上。将该复合材料应用于制备磨辊件,经过5000 h服役,柱状区和复合区在磨辊半径方向上的磨损量分别为8.2 mm、5.9 mm,预计寿命可达到高铬铸铁磨辊的2倍以上。 | 高颖超 孙书刚 钱兵 汪兴兴 吕帅帅 朱昱 倪红军 | 2021 | 复合材料学报2021，38，8： | 6 |
| 3 | Incorporation of nano/micron-SiC particles in Ni-based composite coatings towards enhanced mechanical and anti-corrosion properties显示文摘Ni-based composite coatings incorporated with nano/micron SiC particles were fabricated via electrochemical co-deposition in Watts bath,followed by the evaluation of their mechanical and anti-corrosion properties.The micrographic observations suggest that the SiC particles with various sizes can be well incorporated to the Ni substrate.X-ray diffraction(XRD)patterns indicate that SiC particles with smaller sizes could weaken the preferential growth of Ni along(200)facet.In addition,it is found that the incorporated SiC particles with medium micron sizes(8 and 1.5μm)could significantly enhance the micro-hardness of the Ni composite coatings.Nevertheless,electrochemical measurements demonstrate that micron-sized SiC particles would weaken the corrosion resistance of Ni composite coatings ascribed to the structure defects induced.In contrast,the combined incorporation of nanosized(50 nm)SiC particles with medium micron(1.5μm)ones is capable of promoting the compactness of the composite coatings,which is beneficial to the long-term corrosion resistance with negligible micro-hardness loss. | Bowei Zhang Qiao Zhang Zhan Zhang Kui Xiao Qiong Yao Guojia Ma Gang Sun Junsheng Wu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，1： | 2 |
| 4 | 内燃机活塞组件-缸套系统表面技术研究进展显示文摘通过分析与总结国内外内燃机活塞组件-缸套系统表面技术研究现状和发展趋势,梳理了表面织构和表面涂层技术在内燃机关键运动副减摩抗磨与节能应用中的特点;剖析了表面织构加工技术、表面织构形貌特征与分布、表面涂层制备工艺、表面耐磨涂层、表面热障涂层和表面技术与润滑的协同效应对运动副摩擦性能的影响。分析结果表明:激光表面织构(LST)能有效改善运动副表面的摩擦学性能,直接/间接激光冲击表面织构(LSSP)技术已成为高效、灵活的表面织构加工方法,但由于织构加工工艺、形貌和分布特征对摩擦学性能的影响较为复杂,仍需进一步结合内燃机活塞组件-缸套系统的工况特性研究并优化表面织构的形貌和分布特征;大气等离子喷涂(APS)和超音速火焰(HVOF)喷涂制备的耐磨涂层和热障涂层(TBC)具有良好的耐磨、隔热和抗氧化性,可使内燃机活塞组件-缸套系统表面金属基复合材料、类金刚石(DLC)材料、纳米复合材料和陶瓷材料涂层的减摩抗磨和节能成效明显,但涂层材料种类繁多,很难形成统一的行业标准、规范以及工业化应用;内燃机活塞组件-缸套系统的动力学特性和表面织构、表面涂层与润滑的协同作用复杂,将来仍需综合考虑多场条件下各种表面技术耦合的减摩抗磨机理,进一步完善内燃机活塞组件-缸套系统表面复合理论和技术体系,为内燃机产业的绿色和高效发展提供技术指导。 | 吕延军 罗宏博 张永芳 康建雄 李鹏洲 | 2022 | 交通运输工程学报2022，22，1： | 0 |
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