电沉积纳米镍-钴合金制备金刚石工具  

Preparation of Diamond Tools with Nanocrystalline Ni-Co Alloy Electrodeposit

作　　者：李云东[1] 王淮东[1] 李立波[1] 卢汇洋[1] 

机构地区：[1]河南农业大学机电工程学院,河南郑州450002

出　　处：《电镀与环保》2008年第6期15-17,共3页Electroplating & Pollution Control

基　　金：河南省自然科学基金(No.0411051300);河南省高校青年骨干教师项目资助

摘　　要：介绍了采用纳米镍-钴镀层作为新型胎体材料,制备电镀金刚石工具的方法及其特点。纳米镀层是在瓦特型槽液中通过方波电流而得到的,脉冲参数为电流导通时间1ms,电流关断时间15ms,峰值电流密度100A/dm2。镀层中钴的质量分数量为8.5%,表面较光整,晶粒尺寸在15nm左右,显微硬度达到6000MPa,与纯镍纳米镀层的相近,但抗拉强度明显高于纯镍纳米镀层的。由其制得的工具平均寿命比纯镍纳米胎体材料工具高15.5%。The process for preparing electrodeposited diamond tools by using nanocrystalline Ni-Co alloy deposit as a new matrix material and the features are presented. The nanocrystalline Ni-Co deposit is obtained from a solution containing saccharin and cobalt by square-wave pulse current. The pulse parameters are:current "on" time 1 ms,"off" time 15 ms,and peak current density 100 A/dm2. The deposit contains the mass fraction of 8.5% of cobalt,with a smoother surface,and its grain size is about 15 nm,micro-hardnes...

关 键 词：镍-钴合金 纳米镀层 金刚石工具 胎体材料 

分 类 号：TQ164[化学工程—高温制品工业]