Study on the formation mechanism of the glaze film formed on Ni/Ag composites
Study on the formation mechanism of the glaze film formed on Ni/Ag composites
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Ni/Ag复合材料釉膜形成机理研究
DOI：
10.1016/j.triboint.2015.11.031
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发表时间：
2016-03-01
影响因子：
6.2
通讯作者：
Yu, Lie
中科院分区：
文献类型：
--
作者：
Duan, Wenbo;Sun, Yanhua;Yu, Lie
对Ni/Ag-15at%材料滑动磨损性能的研究结果表明，在600 ℃时，接触表面形成了致密的釉膜，主要由NiO、Ni和Ag组成，对降低摩擦系数起着重要作用。显微镜观察表明，薄膜具有多层结构，外层为富银层，内层为中度氧化的非含银层。多层结构的形成被认为是反复氧化、断裂、混合和固结等因素共同作用的结果，随后在闪光温度下，热诱导银从致密的磨屑层扩散到最外表面。简要讨论了银的二次扩散聚结对Ni/Ag材料摩擦学性能的影响。(C)2015爱思唯尔有限公司版权所有。
The results of the study on the sliding wear behavior of a Ni/Ag-15 at% material showed that the well compacted glaze film mainly consisting of NiO, Ni and Ag was formed on the contact surface at 600 degrees C, which played an important part in decreasing friction coefficients. Microscopic observations showed the film possessed a multi-layered structure with silver-rich, outer layer and moderately-oxidized, non silver-containing inner layer. The formation of the multi-layered structure is believed to have developed as a result of the joint factors involving repeated oxidization, fracturing, mixing and consolidation, followed by heat-induced silver diffusion from the dense wear debris layer to the outmost surface under the flash temperature. The effect of the second diffusion and coalescence of silver on the tribological performance of the Ni/Ag material was briefly discussed. (C) 2015 Elsevier Ltd. All rights reserved.