掺杂对硬质合金微观结构和晶粒生长的影响  

Effect of Doping Elements on Microstructure and Grain Growth of Cemented Carbides

作　　者：陈健[1] 弓满锋[1,2] 伍尚华[1] 蒋强国[1] 

机构地区：[1]广东工业大学机电工程学院,广州510006 [2]湛江师范学院机电工程研究所,湛江524048

出　　处：《材料导报》2014年第19期25-30,35,共7页Materials Reports

基　　金：广东省引进领军人才专项资金(400120001);广东省自然科学基金(S2013010013385);湛江市科技项目(ZJ201301);湛江师范学院科研创新团队项目(ZSIRT13006)

摘　　要：介绍了钴、镍、硅等结合剂在硬质合金生产中的应用及对其烧结工艺的影响,系统论述了钒、铬、妮、钽、钼、铱等10余种元素及其化合物的掺杂种类、掺杂方式、掺杂数量对硬质合金微观结构和性能的影响,在综合大量文献的基础上,阐述了各种晶粒生长抑制剂对WC晶粒生长、晶粒尺寸的抑制效果差异及作用机理的不同,以及各种晶粒生长抑制剂合理的掺杂量。这些研究内容将对硬质合金生产,特别是制备新型硬质合金材料有着重要的参考价值。Some elements,i.e.Co,Ni,Si etc.,usually are used as binder phase to sinter cemented carbide,and their influence on sintering of cemented carbide is discussed.There are many factors in doping elements （i.e.V,Cr,Nb,Ta,Mo,Y etc.）,including doping systems,doping ways and doping content,which affect the microstructure and mechanical properties of cemented carbides.The inhibitory results and the action mechanisms of different inhibitors,based on the latest scientific research,are comparatively stated,and a reasonable doping amount of different inhibitors is also discussed based on comprehensively assessing for the mechanical properties of cemented carbides.These studies have contributed to furtherly guide the production of cemented carbides,especially to offer important reference value for preparing some new cemented carbides.

关 键 词：硬质合金 掺杂 抑制剂 晶粒 

分 类 号：TG148[一般工业技术—材料科学与工程] TB333[金属学及工艺—金属材料]