金属基固体自润滑复合涂层及其制备技术研究进展

发布时间：2018-03-10 02:00

本文选题：固体自润滑复合涂层　切入点：金属基　出处：《表面技术》2017年09期 　论文类型：期刊论文

【摘要】：金属基固体自润滑复合涂层具有强度高、耐高温、耐磨损以及易加工等特性,成为近来研究热点。首先综述了国内外金属基固体自润滑复合涂层的材料体系(即难熔金属基自润滑复合涂层、软金属基自润滑复合涂层、低温金属基自润滑复合涂层以及高温金属基自润滑复合涂层),随后分析了金属基固体自润滑复合涂层的润滑机理,指出润滑膜的低剪切特性是实现减磨润滑的关键。接着介绍了金属基固体自润滑复合涂层的制备技术,比较分析了烧结、电镀、化学镀、热喷涂、物理气相沉积(PVD)、化学气相沉积(CVD)、激光熔覆等技术,在制备金属基自润滑复合涂层方面的优点和不足。最后总结了目前在关于金属基固体自润滑复合涂层研究中存在的问题,进而探讨了相应的解决方案,提出应深入研究金属基体、固体润滑剂与环境三者之间的相互作用机理,并进一步指出研发新型固体润滑剂、改进现有制备技术、开发新工艺是未来重点发展的方向。
[Abstract]:Metal based solid self-lubricating composite coatings have high strength, high temperature resistance, wear resistance and easy processing. It has become a hot research topic in recent years. Firstly, the material systems of metal-based solid self-lubricating composite coatings (i.e. refractory metal-based self-lubricating composite coatings, soft metal-based self-lubricating composite coatings) were reviewed. The lubrication mechanism of metal-based self-lubricating composite coating at low temperature and self-lubricating composite coating on metal base at high temperature was analyzed, and the lubrication mechanism of metal-based solid self-lubricating composite coating was analyzed. It is pointed out that the low shear characteristic of lubricating film is the key to realize antiwear and lubrication. Then the preparation technology of metal-based solid self-lubricating composite coating is introduced, and the sintering, electroplating, electroless plating and thermal spraying are compared and analyzed. The advantages and disadvantages of physical vapor deposition (PVD), chemical vapor deposition (CVD), chemical vapor deposition (CVD), laser cladding and so on in the preparation of metal-based self-lubricating composite coatings are summarized. Finally, the problems existing in the research of metal-based solid self-lubricating composite coatings are summarized. Furthermore, the corresponding solutions are discussed, and the interaction mechanism among metal matrix, solid lubricant and environment is discussed, and it is further pointed out that new solid lubricant can be developed to improve the existing preparation technology. The development of new technology is the key development direction in the future.
【作者单位】：大连理工大学化工学院;大连理工大学材料学院;
【分类号】：TG174.44

【相似文献】