摘要
采用高能球磨方法制备AgSnO_2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AgSnO_2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AgSnO_2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。
Cold spray was used to prepare the AgSnO2 coating on copper substrates with high energy ball milled AgSnO2 composite powders.After annealing at 850°C,the density increases,the Ag-rich phase migrates toward the boundaries of original composite powders and the hardness decreases for the cold sprayed coatings.The arcing and electrical contact experiments show that there is low and stable contact resistance for the AgSnO2 coating,which can be used in the low voltage apparatus.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2017年第12期3858-3861,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51171146)
