摘要
在磨料磨具行业中 ,超硬材料金刚石的应用一直是行业研究、关注的问题。本文结合化学复合镀 ,扩展金刚石的应用 ,将微米金刚石与Ni-P镀液化学复合 ,探讨了复合镀层的沉积机理 ,以及微米金刚石对复合镀层硬度和耐磨性的影响。结果表明 :加入的金刚石颗粒均匀地分布于Ni -P基体中 ,可以使镀层晶粒细化 ,起弥散强化作用 ,从而极大提高复合镀层的耐磨性 ,但对硬度的影响较小。改变金刚石的加入量对镀速的影响很小 ;随镀液金刚石加入量的增加 ,镀层金刚石含量先是迅速增加 ,以后增加趋势越来越缓慢 ,达到顶点后开始下降 ;镀层对金刚石微粒的俘获能力是有限的 。
The application of diamond has always been a major R & D target in abrasives industry.Based on the theory of electroless composite plating, an innovative application of micro-diamond was developed. Micro-diamond was introduced into electroless Ni-P composite plating.The influence of micro-diamond on processing condition of electroless Ni-P composite plating, hardness and resistance were studied as well as the depositing mechanism of composite coating.It is suggested that, micro-diamond spreads evenly in Ni-P matrix and covers more than 80% surface.Micro-diamond can make composite coating crystal grain thin and dispersion strengthened.The composite coating with micro-diamond has excellent abrasion resistance and corresponding hardness. Depositing rate increase little change with various content of diamond. Following the increase of content of diamond in liquor, the content of diamond in composite coating increase quickly at first and then slowly. Absorption of micro-diamond depends on mechanical force and the force is limited.
出处
《金刚石与磨料磨具工程》
CAS
2004年第6期16-18,共3页
Diamond & Abrasives Engineering
基金
河南省科技攻关项目 (971 1 30 30 8)
关键词
微米金刚石
化学复合镀
复合镀层
耐磨性能
micro-diamond
electroless composite plating
composite coating
abrasion resistance
