Development of manufacturing technology on WC-Co hardmetals

作     者：Hongbo Nie Taiquan Zhang 

作者机构：School of Materials Science and EngineeringBaise UniversityBaise 533000China China National R&D Center for Tungsten TechnologyXiamen Tungsten Co.LTD.Xiamen 361009China 

出 版 物：《Tungsten》 (钨科技（英文）)

年 卷 期：2019年第1卷第3期

页      面：198-212页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：the Major Special Projects of Fujian Science and Technology Plan(Grant No.2017HZ0001-1)。 

主　　题：Hardmetal Ultrafine WC powder Ultrafine cobalt powder Extrusion press Liquid sintering Cobalt-enrichment zone hardmetal Binderless hardmetal 

摘      要：Hardmetals are tungsten carbide(WC)-based composites,which are made of WC as a hard phase and transition metals such as Co,Fe,or/and Ni as ductile binder matrices.Their properties can be mainly tailored through the grain sizes of the sintered carbides and the amount of metallic binder.As successful tool materials,hardmetals are widely applied in metal cutting,wear applications,chipless forming,stoneworking,wood,and plastic working.In 2017,about two-thirds of tungsten consumption(including recycled materials)were produced for hardmetals in the world.This paper briefly introduces the development of manufacturing technology on WC-Co hardmetals from three aspects:powder preparation,bulk densifica-tion,and performance characterization.Two special WC-Co hardmetals are also described:cobalt-enrichment zone(CEZ)hardmetals,and binderless hardmetals.Furthermore,the development prospects for manufacturing techniques of hardmetals are also presented in the end.