.AgSnO2触点涂层的组织与性能[J].稀有金属材料与工程,2017,46(12):3858~3861.[.Microstructure and Properties of AgSnO2 Contact Materials Prepared by Cold Spray[J].Rare Metal Materials and Engineering,2017,46(12):3858~3861.]
AgSnO2触点涂层的组织与性能
投稿时间:2015-09-30  修订日期:2016-05-20
中文关键词:  AgSnO2  触点涂层  冷喷涂  电弧侵蚀
基金项目:国家自然科学基金资助(项目号51171146)
中文摘要:
      采用高能球磨方法制备Ag-SnO2复合粉末,将球磨粉末冷喷涂到铜基板上,能够获得几毫米厚度的较致密的AgSnO2触点涂层。850 ℃退火后涂层发生进一步致密化并且在原始粉末颗粒边界形成富银区,涂层材料硬度略为降低。电弧侵蚀和电接触试验表明,冷喷涂的AgSnO2涂层材料具有低而稳定的接触电阻,能够满足触点的基本性能要求。
Microstructure and Properties of AgSnO2 Contact Materials Prepared by Cold Spray
英文关键词:AgSnO2  Contact materials  Cold spray  Arc erosion
英文摘要:
      Cold spray was used to prepare the AgSnO2 coating on copper substrates with high energy ball milled Ag-SnO2 composite powders. The increased density, migration of Ag-rich phase toward the boundaries of original composite powders and decreased hardness occurred for the cold sprayed coatings during annealing at 850 ℃. It was found by the arcing and electrical contact experiments that there is low and stable contact resistance for the AgSnO2 coating, which can be used in the low voltage apparatus.
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