材料科学
电流(流体)
电流
纳米技术
电流
冶金
工程物理
复合材料
电气工程
工程类
作者
Jiebin Du,Minxu Lu,Jin Fang,Wei Li,Dexin Chen,Dexin Chen
标识
DOI:10.1080/21663831.2024.2343950
摘要
Ag coatings by additive manufacturing are a representative high-performance electrical contact materials. Here, an appropriate current of 2 A is introduced during the friction process to optimize the current-carrying friction behavior and anti-wear properties of the Ag coating, such as lower friction coefficient, longer stable wear phase, smoother wear surface and higher wear track hardness. The main reason is that the electroplastic effect of severe plastic deformation generated by friction and Joule heat generated by electric current accelerates the high-density dislocation and grain refinement process, leading to the rapid formation of nanocrystalline structural layers.
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