摘要
通过高能球磨和真空热压技术制备了致密度大于98%的纳米晶CuCr合金,通过XRD,SEM和TEM研究了其显微组织和结构.结果表明,其晶粒尺寸小于50 nm.在模拟电路上研究了其真空电弧稳定性和截流值,纳米晶CuCr合金的真空电弧稳定性好于常规CuCr合金,其截流值为常规CuCr合金的17%~35%.
Nanocrystalline CuCr alloys with a relative density of above 98% can be prepared by high energy ball milling and hot pressing technique. The grain size of nanocrystalline CuCr alloy is less than 50 nm. The vacuum arc instability and chopping current of nanocrystalline CuCr materials were studied in an artificial circuit. The results show that the vacuum arc of nanocrystalline CuCr is more stable than that of conventional materials, the chopping current is 17%-35 % of that of conventional alloys.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2005年第9期1439-1442,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助项目(50071043)