超粗晶WC-Co硬质合金制备技术及发展趋势  

Preparation Technology and Development Trend of Ultra-Coarse Grained WC-Co Cemented Carbides

作　　者：张文科 顾金宝[2] 时凯华 董定乾[1,3] 向新 熊萧 贺逢源 廖军 张立[3] ZHANG Wen-ke;GU Jin-bao;SHI Kai-hua;DONG Ding-qian;XIANG Xin;XIONG Xiao;HE Feng-yuan;LIAO Jun;ZHANG Li(College of Mechanical Engineering,Sichuan University of Sience and Technolocgy,Zigong 643000,China;Zigong Cemented Crbide Cao.,Ltd.,Zigong 643011,China;State Key Laboratory of Powder Metallurgy,Central Suth Universitoy,Changsha 410083,China)

机构地区：[1]四川轻化工大学机械工程学院,四川自贡643000 [2]自贡硬质合金有限责任公司,四川自贡643011 [3]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《稀有金属与硬质合金》2023年第1期97-101,共5页Rare Metals and Cemented Carbides

基　　金：四川轻化工大学人才基金项目(2021RC18);四川省科技计划项目(2022YFG0289);过程装备与控制工程四川省高校重点实验室开放基金项目(GK202104,GK202106);材料腐蚀与防护四川省重点实验室开放基金项目(2021CL26)。

摘　　要：超粗晶硬质合金因其独特的组织特征,表现出良好的抗冲击性、耐磨性、抗热疲劳性等优势,在凿岩、冲压模具、热轧辊领域具有极大的发展潜力,在硬质合金领域备受关注。本文概述了超粗晶硬质合金的特点及增韧机理,介绍了目前粗颗粒WC原料粉末和超粗晶硬质合金的制备工艺,以及超粗晶硬质合金性能强化方法的探索情况,最后对超粗晶硬质合金的发展趋势提出了几点思考。Ultra-coarse grained cemented carbides have attracted much attention because of its unique microstructure characteristics in the field of cemented carbide,showing good impact resistance,wear resistance,thermal fatigue resistance,and other advantages,and have great development potential in rock drilling,stamping die,and hot rolling.This paper summarizes the characteristics and the toughening mechanism of the ultra-coarse grained cemented carbides,and introduces the current preparation of coarse-grained WC raw powders and ultra-coarse grained cemented carbides,as well as the exploration situation of the strengthening method of the ultra-coarse grained cemented carbides.Finally,some thoughts about the development trend of the ultra-coarse grained cemented carbides are put forward.

关 键 词：超粗晶WC-Co硬质合金 WC粉末 制备技术 力学性能 

分 类 号：TG135.5[一般工业技术—材料科学与工程]