Sliding wear resistance of metallic coated surfaces
Sliding wear resistance of metallic coated surfaces
复制标题
金属涂层表面的滑动耐磨性
DOI：
10.1016/0043-1648(76)90019-3
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发表时间：
1976
期刊：
影响因子：
5
通讯作者：
N. Suh
中科院分区：
文献类型：
--
作者：
S. Jahanmir;E. Abrahamson;N. Suh
金属涂层在滑动磨损中的作用进行了实验研究。结果表明，软涂层的摩擦学行为符合磨损的分层理论，特别是镀层厚度的临界性质。结果表明，当涂层材料比基体软且比临界厚度薄时，磨损率可能降低三个数量级。在各种钢上镀镉、银、金或镍的最佳镀层厚度为0.1 μm。镉、银和镍仅在非氧化环境中减少磨损，而金在空气和惰性气氛中均能减少磨损。电镀前基材表面的粗糙度和涂层/基材结合的性质对这些涂层的寿命有显著影响。将基体抛光至0.1 μm（c.l.a.）在镀覆之前，以及通过镀覆材料扩散到基底中，这增加了涂层/基底结合强度。
The role of metallic coatings in sliding wear is examined experimentally. The results indicate that the tribological behavior of soft coatings is consistent with the delamination theory of wear, especially the critical nature of the plating thickness. It is shown that a reduction in wear rate of three orders of magnitude is possible when the coating material is softer than the substrate and thinner than a critical thickness. The optimum plate thickness is found to be of the order of 0.1 μm for cadmium, silver, gold or nickel plated on various types of steel. Cadmium, silver and nickel reduce wear only in non-oxidizing environments, whereas gold reduces wear both in air and in inert atmospheres.The roughness of the substrate surface prior to plating and the nature of the coating/substrate bond have significant effects on the life of these coatings. The life of the coatings is increased by polishing the substrate to 0.1 μm (c.l.a.) prior to plating, and also by diffusion of the plated material into the substrate, which increases the coating/substrate bond strength.