有色金属科学与工程Issue(6)：47-52,6.DOI:10.13264/j.cnki.ysjskx.2014.06.008
超细晶WC-10Co硬质合金制备的主要影响因素
Main factors influencing preparation of ultra-fine grained WC-10Co cemented carbide
摘要
Abstract
By using scanning electron microscopy(SEM), transmission electron microscopy(TEM) and measuring mechanical behaviors, microstructures of WC and Co powders with different initial particle sizes are investigated after different times of ball milling. The ball milled composite powders with different percentage of grain growth inhibitors are vacuum hot-pressed and sintered to prepare ultra-fine grained cemented carbides and the microstructure and mechanical properties of the as-prepared cemented carbide are studied to reveal the effect of grain growth inhibitors of different proportions. The results show that the ultra-fine raw powder material has a good effect after a short time of ball milling; the grain refining effect in cemented carbide by adding VC+Cr3C2 or VC+TaC is better than that of the sole adding of VC; the WC particles has a near round shape and the bending strength of the cemented carbide can be improved by adding Cr 3C2; the WC particles take shapes of triangle or quadrilateral after adding Tac which can improve the hardness of cemented carbide.关键词
超细晶硬质合金/WC-10Co/晶粒抑制剂/微观结构/力学性能Key words
ultra-fine grained cemented carbide/WC-10Co/grain growth inhibitor/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
张贺佳,陈礼清,王文广,孙静,王全兆..超细晶WC-10Co硬质合金制备的主要影响因素[J].有色金属科学与工程,2014,(6):47-52,6.基金项目
工业与信息化部科技重大专项课题资助项目(012ZX04003061) （012ZX04003061）
