摘要
采用高能球磨及热压方法制备银 /金刚石、银 /石墨、银 /炭黑、银 /碳管四种Ag/C合金 ,研究了不同碳素形态对银基触头材料组织、性能的影响。结果表明 ,金刚石、石墨和碳黑粒子均匀分布在银基体内部 ,扇贝状银 /碳管组织和其它三种组织明显不同。高能球磨和热压后 ,石墨态的碳元素仍能保持原来的形态和晶型。热压块体的密度能达到理论密度的 95 %以上。
Ag/C contact alloys with fine microstructures of different types of carbon materials, which include diamond, graphite, carbon black and carbon-tube, were fabricated by high-energy ball milling, hot-pressing and sintering. The morphologies and performances of the alloys were studied. The results show that the diamond, graphite and carbon black particles disperse inside Ag matrix,the scallop-like microstructure of Ag/carbon-tube material is apparently different from the others. The morphology and crystal structure of graphite have no change after the ball milling and hot-pressing process. The density of hot-pressed blocks is more than 95% of the theory density. Different types of carbons can lead to a hardness variant of the Ag/C materials.
出处
《兵器材料科学与工程》
CAS
CSCD
2003年第3期28-30,35,共4页
Ordnance Material Science and Engineering
基金
国家自然科学基金 (5 0 2 710 5 0
5 0 0 710 43 )
国家高技术研究发展计划 (2 0 01AA3 2 0 714 )资助项目
