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Preparation and tribological performances of Ni-P-multi-walled carbon nanotubes composite coatings 被引量:7
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作者 孟振强 李溪滨 +1 位作者 熊拥军 湛菁 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第11期2719-2725,共7页
Multi-walled carbon nanotubes (MWNTs) were wet-milled in the presence of ammonia and cationic surfactant and then used as reinforcements to prepare Ni-P-MWNTs composite coatings by electroless plating. The tribologi... Multi-walled carbon nanotubes (MWNTs) were wet-milled in the presence of ammonia and cationic surfactant and then used as reinforcements to prepare Ni-P-MWNTs composite coatings by electroless plating. The tribological performances of the composite coatings under dry condition were investigated in comparison with 45 steel and conventional Ni-P coating, Micrographs show that short MWNTs with uniform length and open tips were obtained through the wet-milling process. The results of wear test reveal that the Ni-P-MWNTs composite coatings posses much better friction reduction and anti-wear performances when compared with 45 steel and Ni-P coating. Within the MWNTs content range of 0.74%-1.97%, the friction coefficient and the volume wear rate of the composite coatings decrease gradually and reach the minimum values of 0.08 and 6.22x10-15 m3/(N.m), respectively. The excellent tribological performances of the composite coatings can be attributed to the introduction of MWNTs, which play both roles of reinforcements and solid lubricant during the wear process. 展开更多
关键词 Ni-P coating carbon nanotubes composite coating ball milling electroless plating self-lubrICATION tribologicalperformance friction coefficient volume wear rate
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Oxidation and Electrical Properties of Cu-Mn_(3)O_(4)Composite Coating Obtained by Electrodeposition on SOFC Interconnects
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作者 吕烨 LUO Shengyun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第1期72-78,共7页
Cu-Mn_(3)O_(4)composite coating was prepared on the SUS 430 ferritic stainless steel by electrodeposition and then exposed in air at 800℃corresponding to the cathode atmosphere of solid oxide fuel cell(SOFC).A dual-l... Cu-Mn_(3)O_(4)composite coating was prepared on the SUS 430 ferritic stainless steel by electrodeposition and then exposed in air at 800℃corresponding to the cathode atmosphere of solid oxide fuel cell(SOFC).A dual-layer oxide structure mainly comprising an external layer of CuO followed by(Cu,Mn,Fe)_(3)O_(4)spinel and an internal layer of Cr-rich oxide was thermally developed on the coated steel.The scale area-specific resistances(ASRs)of the coated steels were lower than the scale ASR of the uncoated steel after identical thermal exposure.The external layer of CuO/(Cu,Mn,Fe)_(3)O_(4)spinel not only served as a barrier to reduce the growth rate of Cr-rich oxide internal layer and to suppress the outward diffusion of Cr,but also lowered the surface scale ASRs considerably. 展开更多
关键词 solid oxide fuel cell steel interconnect Cu-Mn_(3)O_(4)composite coating area specific resistance
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Fabrication of in-situ synthesized ceramic reinforced Ni-based alloy composite coatings by reactive braze coating processing 被引量:3
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作者 Pei Xinjun Liu Wenbin +3 位作者 Cheng ge Pan Xinyu Li Aina Li haishen 《China Welding》 EI CAS 2019年第4期56-62,共7页
In-situ synthesized ceramic such as TiC,Cr7C3 and Cr5B3 reinforced Ni-based alloy composite coating was fabricated on the surface of mild steel substrate by reactive braze coating processing with colloidal graphite,Cr... In-situ synthesized ceramic such as TiC,Cr7C3 and Cr5B3 reinforced Ni-based alloy composite coating was fabricated on the surface of mild steel substrate by reactive braze coating processing with colloidal graphite,Cr,Ni,ferro-boron,Si and titanium powders as the raw materials at low temperature of 1000℃,and a new kind of coating materials was developed.By means of SEM,EDS,XRD and surface hardness tester,the microstructures,phases,hardness and wear-resistance of the coating were analyzed,respectively.The results revealed that the coating was mainly composed of the ceramic in-situ synthesized reinforcement phases of TiC,Cr7C3 and Cr5B3 and the binder phases in-situ synthesized of Ni31Si12 and(Ni,Fe)solid solution;The ceramic reinforcement phases of TiC,Cr7C3 and Cr5B3 were randomly distributed in the binder phases of Ni31Si12 and(Ni,Fe)solid solution;The coating had about 15vol%pores and can possibly be applied as a self-lubrication coating;The coating and the substrate were integrated together by metallurgical bonding;The coating had a hardness up to 91-94HR15N. 展开更多
关键词 reactive braze coating processing composite coating Ni-based alloy CERAMIC self-lubrication coating
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Influence of solid contaminants in oil on wear characteristics of nano-Al_2O_3/Ni composite coating
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作者 杜令忠 徐滨士 +2 位作者 董世运 杨华 吴毅雄 《中国有色金属学会会刊:英文版》 CSCD 2004年第4期718-722,共5页
Solid contaminants in lubrication system will cause severe wear of sliding compo nents. In order to improve the wear resistance of the material in oil containing solid contaminants,the brush plated nano-Al2O3/Ni compo... Solid contaminants in lubrication system will cause severe wear of sliding compo nents. In order to improve the wear resistance of the material in oil containing solid contaminants,the brush plated nano-Al2O3/Ni composite coating was p repared and the influence of the sand content and sand size on the tribological property of the coating in oil containing solid contaminants was tested with bal l-on-disc tester. The results show that the wear volume increases with increas ing the sand content and sand size,and the wear resistance of the composite coa ting is 20% higher than that of the high-speed plain nickel coating. The main w ear mechanisms of the coatings are abrasive wear and adhesive wear. And due to t he nano-particle strengthening effect,the wear resistance of the composite coa ting is improved. 展开更多
关键词 Al2O3/Ni 复合涂层 磨损 摩擦 纳米涂层 润滑油 固体污染物
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Effect of wear conditions on tribological properties of electrolessly-deposited Ni-P-Gr-SiC hybrid composite coating 被引量:2
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作者 何美凤 胡文彬 +3 位作者 钟澄 翁俊飞 沈彬 仵亚婷 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第10期2586-2592,共7页
The friction and wear properties of the electrolessly-deposited Ni-P-Gr-SiC composites were investigated. The effects of graphite content, load and rotation speed on the friction coefficient and wear resistance of the... The friction and wear properties of the electrolessly-deposited Ni-P-Gr-SiC composites were investigated. The effects of graphite content, load and rotation speed on the friction coefficient and wear resistance of the composite coatings were mainly investigated. The worn surface and cross section of the coatings were characterized by scanning electron microscopy and energy-dispersive X-ray analysis. The results show that the composite coatings reveal good antifriction and wear resistance due to the synergic effect of graphite and SiC particles. The formation of graphite-rich mechanically mixed layer (GRMML) on the surface of Ni-P-Gr-SiC coating contributes to the good tribological behavior of the wear counterparts and SiC particles play a load bearing role in protecting GRMML from shearing easily. 展开更多
关键词 electroless composite coating Ni-P coating GRAPHITE SIC tribological property self-lubrICATION synergic effect
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含氟高分子材料包覆铝核壳材料研究进展
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作者 郭学永 周近强 +5 位作者 李洪亮 吴成成 方华 邓鹏 朱艳丽 刘睿 《兵工学报》 EI CAS CSCD 北大核心 2024年第5期1534-1546,共13页
金属铝(Al)具有高燃烧热值、高密度、低耗氧量等优异性能,是固体复合推进剂领域最受青睐的金属添加剂。为了提高固体复合推进剂的性能,有必要采取措施对Al进行包覆改性。近年来含氟高分子包覆Al因其优异的综合性能而受到广泛关注。介绍... 金属铝(Al)具有高燃烧热值、高密度、低耗氧量等优异性能,是固体复合推进剂领域最受青睐的金属添加剂。为了提高固体复合推进剂的性能,有必要采取措施对Al进行包覆改性。近年来含氟高分子包覆Al因其优异的综合性能而受到广泛关注。介绍了不同种类的含氟高分子包覆金属Al核壳材料、不同包覆方法、Al核壳材料的性能以及含氟高分子与Al的作用机理,总结发现通过Al核壳结构设计、含氟高分子引入和Al颗粒表面的自活化策略等途径,含氟高分子与氧化铝层之间的表面发生剧烈的氧化过程,增强Al核壳材料点火和燃烧性能,显著改善推进剂的燃烧团聚和燃烧效率。但目前含氟高分子包覆Al核壳材料研究过程仍存在许多不足,如缺乏新型多元含氟高分子包覆Al的能量性能的研究;缺乏Al颗粒与包覆层在高升温速率下作用机理的认识;包覆效率和批量制备能力低,阻碍了其实际应用等。未来可从进一步增强朝着研发新型含氟聚合物、研究对反应历程中产物的实时捕捉和开发工业化生产制造技术等方向发展。 展开更多
关键词 含氟高分子 铝核壳材料 包覆 复合固体推进剂
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Self-lubricating epoxy-based composite abradable seal coating eliminating adhesive transfer via hierarchical design 被引量:3
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作者 Yun-qi Tong Wei Li +2 位作者 Qiu-sheng Shi Lin Chen Guan-jun Yang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第9期145-154,共10页
Aluminum-based composite abradable seal coatings are pivotal to improving the efficiency of aero engines or gas turbines.However,the adhesive transfer frequently occurs between metallic blade tips and aluminum-based c... Aluminum-based composite abradable seal coatings are pivotal to improving the efficiency of aero engines or gas turbines.However,the adhesive transfer frequently occurs between metallic blade tips and aluminum-based composite coatings,resulting in engine vibration and even jam.Many past studies had tried to solve this problem by reducing coating hardness,improving lubrication,or strengthening blade tips,but all had failed.In this paper,we proposed a novel epoxy-based composite abradable seal coating,eliminating adhesive transfer by changing metal-to-metal scraping pair to metal-to-polymer scraping pair.The coating was developed via a hierarchical structure design.Large spherical pores were uniformly distributed in the continuous epoxy matrix with fine graphite dispersion.By adding 20 vol.%graphite and 50 vol.%hollow microspheres,a self-lubricating epoxy-based coating of 0.26 friction coefficient with thermal conductivity of 0.28 W/(m·K),coating HR15 Y hardness at 54.8,and bonding strength at 18.7 MPa can be reached.When the metallic blades scrape the epoxy-based composite coating,no adhesive transfer occurs.Besides,a smooth scraped surface is formed by pseudoplastic deformation.This epoxy-based composite abradable seal coating opens a new way to improve the efficiency and reliable operations of air engine compressors. 展开更多
关键词 Epoxy-based composite coating Hierarchical structure design self-lubricating Pseudoplastic deformation
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LPAF添加剂对碳基固油复合润滑体系摩擦学性能的影响
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作者 张登歌 周润泽 +3 位作者 汪佳 王泽儒 袁荣荣 张侃 《表面技术》 EI CAS CSCD 北大核心 2024年第21期44-54,96,共12页
目的进一步提高碳基固油复合润滑体系的摩擦学性能。方法采用等离子体增强化学气相沉积技术(PECVD)和薗头-萩原(Sonogashira-Hagihara)偶合反应,分别设计制备具有类富勒烯结构的碳基(FLC)涂层和具有层状特征的多孔芳香骨架碳基(LPAF)添... 目的进一步提高碳基固油复合润滑体系的摩擦学性能。方法采用等离子体增强化学气相沉积技术(PECVD)和薗头-萩原(Sonogashira-Hagihara)偶合反应,分别设计制备具有类富勒烯结构的碳基(FLC)涂层和具有层状特征的多孔芳香骨架碳基(LPAF)添加剂。在此基础上,构建由FLC涂层、LPAF添加剂及PAO10基础油组成的三元复合润滑体系,系统考察三元体系的摩擦学行为,并提出潜在的摩擦机制。结果LPAF的层状特性有效降低了界面摩擦,在界面剪切和摩擦热的共同作用下,LPAF由初始的非晶薄片形态通过石墨化转变为圆形类洋葱碳薄片,成为进一步减小复合体系摩擦的关键,使摩擦因数最低降至0.016;此外,LPAF能够对FLC涂层磨损区域进行填补,提升其耐磨损能力,其磨损率低至1.7×10^(–9)mm^(3)/(N·m)。结论绿色环保型LPAF添加剂能够显著提升基于碳基涂层和基础油构建的固p油复合润滑体系的摩擦学性能。 展开更多
关键词 固油复合润滑 碳基涂层 添加剂 结构调控 摩擦学性能
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Novel Hf_(x)Ta_(1−x)C solid solution nanowire toughened HfC coating:An effective strategy for synchronous enhanced mechanical and anti-ablation performance
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作者 Hui Chen Yulei Zhang +3 位作者 Yanqin Fu Wenhan Gai Junhao Zhao Haohui Zhang 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2024年第5期590-601,共12页
Ultra-high-temperature ceramic nanowires have shown increasing potential for use as thermal structural components.Herein,novel single-crystal Hf_(0.5)Ta_(0.5)C solid solution nanowires were synthesized and incorporate... Ultra-high-temperature ceramic nanowires have shown increasing potential for use as thermal structural components.Herein,novel single-crystal Hf_(0.5)Ta_(0.5)C solid solution nanowires were synthesized and incorporated with a HfC coating to construct a robust structure with Hf_(0.5)Ta_(0.5)C solid solution nanowires uniformly distributed and interconnected within the coating.The novel Hf_(0.5)Ta_(0.5)C solid solution nanowires could effectively hinder crack propagation through crack tip pinning and crack deflection.This mechanism substantially enhanced the elastic modulus and fracture toughness of the HfC coating by 53.29%and 59.67%,respectively.The toughened HfC coating displayed superior fracture toughness and good interfacial binding strength with the substrate to resist severe oxidation and scouring.Additionally,the high thermal conductivity of the toughened HfC coating promoted heat transmission.Thus,in comparison to the pure HfC coating,the toughened HfC coating displayed smaller mass and linear ablation rates of−0.35 mg·s^(−1)and−0.46μm·s^(−1),which decreased by 39.66%and 36.98%,respectively.Our work not only simultaneously enhances the mechanical properties and ablation resistance of HfC-coated carbon/carbon(C/C)composites but also provides novel prospects for advanced ultrahigh-temperature ceramic nanowires under extreme conditions. 展开更多
关键词 Hf_(x)Ta_(1−x)C solid solution nanowires HfC coating carbon/carbon(C/C)composites mechanical performance ablationresistance
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Tribological performance of novel nickel-based composite coatings with lubricant particles 被引量:4
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作者 Ignacio TUDELA Andrew J.COBLEY Yi ZHANG 《Friction》 SCIE CSCD 2019年第2期169-180,共12页
The present study is focused on the evaluation of the tribological performance of novel Ni/h BN and Ni/WS_2 composite coatings electrodeposited from an additive-free Watts bath with the assistance of ultrasound. Lubri... The present study is focused on the evaluation of the tribological performance of novel Ni/h BN and Ni/WS_2 composite coatings electrodeposited from an additive-free Watts bath with the assistance of ultrasound. Lubricated and non-lubricated scratch tests were performed on both novel composite coatings and on standard Ni deposits used as a benchmark coating to have an initial idea of the effect of the presence of particles within the Ni matrix. Under lubricated conditions, the performance of the Ni/h BN composite coating was very similar to the benchmark Ni coating, whereas the Ni/WS_2 behaved quite differently, as the latter did not only show a lower coefficient of friction, but also prevented the occurrence of stick-slip motion that was clearly observed in the other coatings. Under non-lubricated conditions, whereas the tribological performance of the Ni/hBN composite coating was again very similar to that of the benchmark Ni coating, the Ni/WS_2 composite coatings again showed a remarkable enhancement, as the incorporation of the WS_2 particles into the Ni coating not only resulted in a lower coefficient of friction, but also in the prevention of coating failure. 展开更多
关键词 nickel tungsten DISULPHIDE HEXAGONAL boron NITRIDE composite coatings solid LUBRICANT TRIBOLOGY
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LiCl/PVA/硅胶复合干燥剂涂层制备及其循环除湿特性
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作者 周承喆 刘林 +3 位作者 李军 邓立生 黄宏宇 罗向龙 《新能源进展》 CSCD 2023年第3期213-220,共8页
复合干燥剂由于能够结合多种干燥剂优势而成为新型高效干燥剂研发的热点之一。以硅胶为基质、LiCl为吸湿盐以及具有一定吸湿能力的聚乙烯醇(PVA)为黏结剂制备LiCl/PVA/硅胶复合干燥剂涂层,考察不同LiCl浸渍浓度、PVA质量分数、入口空气... 复合干燥剂由于能够结合多种干燥剂优势而成为新型高效干燥剂研发的热点之一。以硅胶为基质、LiCl为吸湿盐以及具有一定吸湿能力的聚乙烯醇(PVA)为黏结剂制备LiCl/PVA/硅胶复合干燥剂涂层,考察不同LiCl浸渍浓度、PVA质量分数、入口空气湿度和再生温度条件下涂层的循环除湿特性。结果表明,不同实验条件下涂层均具有良好的循环稳定性,循环除湿量随LiCl浸渍浓度、空气湿度和再生温度的提高而增大,随PVA质量分数的增大而减小。 展开更多
关键词 固体除湿 复合干燥剂 干燥剂涂层 除湿特性
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固体氧化物燃料电池新型连接体材料的研究进展
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作者 程强 韩东 +3 位作者 时婧 郑莉莉 徐斌 孙明月 《功能材料》 CAS CSCD 北大核心 2023年第2期2018-2025,共8页
连接体是固体氧化物燃料电池(SOFC)中的关键组件,对连接体的高性能需求一直制约着SOFC的商业化发展。随着SOFC的运行温度降低到800℃以下,廉价的高温抗氧化金属连接体材料取代掺杂铬酸镧(LaCrO_(3))陶瓷的可能性大大增加。此外,为了优... 连接体是固体氧化物燃料电池(SOFC)中的关键组件,对连接体的高性能需求一直制约着SOFC的商业化发展。随着SOFC的运行温度降低到800℃以下,廉价的高温抗氧化金属连接体材料取代掺杂铬酸镧(LaCrO_(3))陶瓷的可能性大大增加。此外,为了优化连接体的性能,大量的导电/保护性涂层及新的复合材料也不断地涌现。综述了迄今为止连接体材料的发展现状,在对各种连接体材料以及涂层材料的性能和优缺点进行比较的同时,重点介绍了新开发连接体材料的研究进展,并对连接体材料的发展趋势进行了展望。 展开更多
关键词 固体氧化物燃料电池(SOFC) 连接体 铬酸镧(LaCrO_(3))陶瓷 涂层 复合材料
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Tribological behavior of a Ni-WS2 composite coating across wide temperature ranges 被引量:3
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作者 Shuai Cui Wen-Sheng Li +4 位作者 Ling He Li Feng Guo-Sheng An Wei Hu Chun-Xia Hu 《Rare Metals》 SCIE EI CAS CSCD 2019年第11期1078-1085,共8页
In order to reduce the friction coefficient of a pure nickel coating and extend the lifetime of metal parts under extreme friction conditions,a series of Ni-based WS2-composite solid lubrication coating containing dif... In order to reduce the friction coefficient of a pure nickel coating and extend the lifetime of metal parts under extreme friction conditions,a series of Ni-based WS2-composite solid lubrication coating containing different WS2 concentrations were prepared on a 45#mild carbon steel substrate by electroplating.The cyclic voltammetry method was used to investigate the electroplating regulation of the Ni-WS2 composite coatings.X-ray diffraction(XRD) and scanning electron microscopy(SEM) were used to analyze the microstructures and wear surfaces of the composite coatings,the tribological properties and wear mechanisms of the composite coatings with different WS2 concentrations.The results show that the addition of WS2 can promote the cathode polarization of the electroplating process,and the polarization degree goes up with the increase in WS2 concentrations.The friction coefficient of Ni-composite coatings significantly decreases by the addition of WS2 particles.The lowest friction coefficient at room temperature is obtained at a value around 0.01-0.03 from the coating deposited in the electrolyte solution with a 30g·L^-1 WS2 concentration.The friction coefficient of the Ni-WS2 composite coating remains in 0.01-0.03 with the increase in temperature from room temperature to 300℃.When the temperature goes up to 500℃,the friction coefficient manifests a continuous increase to 0.12,because WS2 is gradually oxidized into WO3 and therefore loses its lubrication ability. 展开更多
关键词 WS2 self-lubricating composites coating Frictional WEAR Temperature
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“防水涂料+防水卷材”复合工法在建筑防水工程中的应用
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作者 吴旭成 《江西建材》 2023年第11期317-319,共3页
文中针对某地块一期地下防水工程现状及存在的病害,遵循“刚柔并济、多道设防、综合治理”的原则,在二期地下防水施工中提出了“非固涂料+自粘卷材”的复合防水方案,阐述了施工要点和注意事项,保障了施工质量和防水效果,实现了“皮肤式... 文中针对某地块一期地下防水工程现状及存在的病害,遵循“刚柔并济、多道设防、综合治理”的原则,在二期地下防水施工中提出了“非固涂料+自粘卷材”的复合防水方案,阐述了施工要点和注意事项,保障了施工质量和防水效果,实现了“皮肤式”防水理念。 展开更多
关键词 非固涂料 自粘卷材 复合防水
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煤炭固体废弃物在金属材料热加工领域的应用 被引量:15
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作者 马壮 陶莹 +1 位作者 董世知 李智超 《煤炭学报》 EI CAS CSCD 北大核心 2014年第1期32-39,共8页
综述了煤炭固体废弃物的特点及应用现状,着重介绍了粉煤灰及煤矸石等煤炭固体废弃物在金属材料热加工领域的应用,包括制备复合材料、铸造涂料、复合陶瓷涂层及渗硼保护层等,全面阐述了其制备工艺及性能特点,并指出了煤炭固体废弃物在金... 综述了煤炭固体废弃物的特点及应用现状,着重介绍了粉煤灰及煤矸石等煤炭固体废弃物在金属材料热加工领域的应用,包括制备复合材料、铸造涂料、复合陶瓷涂层及渗硼保护层等,全面阐述了其制备工艺及性能特点,并指出了煤炭固体废弃物在金属材料热加工领域具有广阔的应用前景。但由于各地粉煤灰、煤矸石的化学成分差异较大,如何依据化学成分差别将其有针对性地应用在金属材料的不同加工技术中,如何进行配方设计及工艺调整等是一项值得深入探讨的问题。 展开更多
关键词 煤炭固体废弃物 热加工 复合材料 铸造涂料 陶瓷涂层
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不同载荷下钛合金激光熔覆Ni60/h-BN自润滑耐磨复合涂层的摩擦学性能 被引量:14
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作者 任佳 刘秀波 +5 位作者 余鹏程 陆小龙 陈瑶 石皋莲 吴少华 徐东 《摩擦学学报》 EI CAS CSCD 北大核心 2015年第4期407-414,共8页
为提高钛合金的摩擦学性能,以金属陶瓷Ni60和固体润滑剂h-BN复合合金粉末为原料,采用激光熔覆技术在钛合金表面制备出了以硬质Ti C、Ti B2、Cr B等为耐磨增强相、以h-BN为固体润滑相的自润滑耐磨复合涂层.采用X射线衍射(XRD)、扫描电镜(... 为提高钛合金的摩擦学性能,以金属陶瓷Ni60和固体润滑剂h-BN复合合金粉末为原料,采用激光熔覆技术在钛合金表面制备出了以硬质Ti C、Ti B2、Cr B等为耐磨增强相、以h-BN为固体润滑相的自润滑耐磨复合涂层.采用X射线衍射(XRD)、扫描电镜(SEM)和能谱仪(EDS)分析了涂层的显微组织结构及物相;在室温条件下分别在不同载荷(2、5和8 N)下以Si3N4陶瓷球为对偶件测试了复合涂层与基体的干滑动磨损性能,并分析了其磨损机理.结果表明:复合涂层的平均硬度为HV0.21 013.75,约是基体(HV0.2360)的3倍,在所有试验载荷下,复合涂层的摩擦系数和磨损率均比基体的低.随着载荷的增加,涂层的摩擦系数和磨损率均先减小后升高,说明涂层在5 N载荷下显示出最好的自润滑和耐磨性能. 展开更多
关键词 固体润滑 耐磨复合涂层 载荷 钛合金
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激光熔覆制备NiCr/Cr_3C_2-WS_2-CaF_2复合材料涂层 被引量:11
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作者 陈书法 何祥明 +2 位作者 杨茂盛 王明娣 刘秀波 《材料热处理学报》 EI CAS CSCD 北大核心 2012年第10期21-25,共5页
以NiCr/Cr3C2-WS2-CaF2复合合金粉末为原料,采用激光熔覆技术,在1Cr18Ni9Ti不锈钢表面制备了高温自润滑耐磨复合材料涂层。采用XRD、SEM和EDS等手段对所制备复合涂层的显微组织进行了分析,并分别测试了涂层在室温、300℃、600℃时的干... 以NiCr/Cr3C2-WS2-CaF2复合合金粉末为原料,采用激光熔覆技术,在1Cr18Ni9Ti不锈钢表面制备了高温自润滑耐磨复合材料涂层。采用XRD、SEM和EDS等手段对所制备复合涂层的显微组织进行了分析,并分别测试了涂层在室温、300℃、600℃时的干滑动磨损性能。结果表明:该复合涂层由γ-(Ni,Fe)固溶体基体、Cr7 C3/WC增强相及CrS/WS2润滑颗粒组成;室温时,涂层的磨损率较大;随着温度的升高,由于润滑转移膜的形成,涂层拥有良好的减摩耐磨性能。 展开更多
关键词 激光熔覆 复合涂层 固体润滑 高温磨损
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激光熔覆NiCr/Cr_3C_2-WS_2自润滑耐磨涂层的高温摩擦学行为 被引量:19
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作者 刘秀波 刘海青 +6 位作者 孟祥军 杨茂盛 石世宏 傅戈雁 孙承峰 王明娣 齐龙浩 《材料工程》 EI CAS CSCD 北大核心 2013年第11期26-31,37,共7页
利用激光熔覆技术在0Cr18Ni9不锈钢基体上制备NiCr/Cr3C2耐磨涂层与NiCr/Cr3C2-30%WS2耐磨自润滑涂层,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)分析了涂层的物相组成及显微组织。在室温、300℃和600℃下分别测试了上述... 利用激光熔覆技术在0Cr18Ni9不锈钢基体上制备NiCr/Cr3C2耐磨涂层与NiCr/Cr3C2-30%WS2耐磨自润滑涂层,采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)分析了涂层的物相组成及显微组织。在室温、300℃和600℃下分别测试了上述涂层的干滑动摩擦学性能,并讨论其磨损机理。实验结果表明:添加WS2的熔覆涂层主要有Cr7C3、(Cr,W)C碳化物增强相、γ-(Fe,Ni)/Cr7C3共晶增韧相、WS2及CrS润滑相。两种涂层都随温度的升高,摩擦因数降低,而磨损率增大。在室温及300℃时,添加WS2涂层由于润滑相的作用拥有较好的减摩耐磨性能。在600℃时,由于涂层中碳化物硬质相的强度降低,两种涂层的磨损率显著增大。 展开更多
关键词 激光熔覆 高温耐磨复合涂层 固体润滑
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粘结固体润滑涂层在油润滑条件下的摩擦学性能 被引量:13
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作者 冶银平 陈建敏 周惠娣 《润滑与密封》 CAS CSCD 北大核心 2007年第9期10-11,19,共3页
为了探讨粘结MoS2基固体润滑涂层在油润滑条件下的抗磨减摩性能,采用MHK-500型摩擦磨损试验机对粘结MoS2基固体润滑涂层在4种常用油(液体石蜡、RP-3煤油、4050滑油和CD-40柴油)润滑下的摩擦磨损性能进行了研究,考察了速度和载荷对润滑... 为了探讨粘结MoS2基固体润滑涂层在油润滑条件下的抗磨减摩性能,采用MHK-500型摩擦磨损试验机对粘结MoS2基固体润滑涂层在4种常用油(液体石蜡、RP-3煤油、4050滑油和CD-40柴油)润滑下的摩擦磨损性能进行了研究,考察了速度和载荷对润滑涂层在4种不同的常用油润滑下的摩擦磨损性能。结果表明,在低载荷(320N)试验条件下,4种常用油润滑下涂层的耐磨性比干摩擦下得到显著的提高,摩擦因数从0.12降低到0.08左右;但在高载荷(1100N)下,油润滑对涂层的摩擦磨损性能没有明显的改善。只有在合适的载荷下,固/油复合润滑技术可明显改善摩擦副的润滑性能。 展开更多
关键词 粘结固体润滑涂层 固/油复合润滑 摩擦磨损
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含氟有机不粘性干膜的制备及其摩擦学性能研究进展 被引量:5
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作者 党鸿辛 谷国团 +1 位作者 张治军 吴志申 《摩擦学学报》 EI CAS CSCD 北大核心 2002年第6期490-494,共5页
介绍了含氟有机不粘性干膜润滑剂的种类、使用工况及其摩擦学性能,综合评述了含氟有机不粘性干膜润滑剂的研究进展及其应用研究现状,并展望了其应用前景和发展方向.
关键词 含氟有机不粘性干膜 摩擦学性能 氟聚合物 聚四氟乙烯 复合材料 干膜润滑剂
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