摘要
为探索难熔金属和铜粉末混合坯致密化工艺,提出了钨铜粉末材料液相烧结和热静液挤压致密新工艺,经过实验获得了近致密、组织细小、性能优异的复合材料.结果表明,WCu40混合粉末冷压坯的相对密度约为70%,经过液相烧结和热静液挤压,可以获得相对密度大于99.8%的钨铜(WCu38)材料.致密后材料导电率可达到41～48 m·Ω-1·mm-2,硬度可达到HB173～176.
To seek a way of densification of refractory metals and copper powders, a new method to make WCu composites by sintering and hot hydrostatic extrusion was put forward,and by using this method,some WCu40 samples with fully densification,fine microstructure,and good properties were successfully obtained.The experimental results show that,the relative density of coldpressed compact is about 70%,and after sintering and hot hydrostatic extrusion, it increases to 99.8%,while the percentage composition is changed to WCu38. The specific conductance of the so-fabricated WCu composite is about 41～48 m·Ω-1·mm-2,and Brinell hardness is about 173-176.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第z2期72-75,共4页
Chinese Journal of Rare Metals
基金
国家自然科学基金(50575050)资助项目
关键词
钨铜复合材料
粉末致密化
烧结
热静液挤压
WCu composites
densification of powders
sintering
hot hydrostatic extrusion
作者简介
刘祖岩 (1962-), 男, 哈尔滨人, 博士, 教授;研究方向: 塑性加工, 粉末冶金 通讯联系人 (E-mail: lzy@hope.hit.edu.cn)
