Effects of Phosphorus Additions on Microwave Sintering Properties of Uitrafine WC-10Co Cemented Carbides
Effects of Phosphorus Additions on Microwave Sintering Properties of Uitrafine WC-10Co Cemented Carbides作者机构:State Key Lab of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology State Key Lab of Advanced Technology for Materials Synthesis and ProcessingWohan University of Technology
出 版 物:《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报(材料科学英文版))
年 卷 期:2007年第22卷第4期
页 面:725-727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 National Key Technology R&D Program of MOST,China(2003BA328C) the National Natural Science Foundation of China(50472043) Natural Science Foundation of Hubei Province(2006ABA312,2006ABA316)
主 题:microwave sintering cemented carbides ultrafine hardmetals phosphorus grain growth inhibitor
摘 要:Using the microwave sintering technology, the effects of phosphorus (P) additions on the microstructure and properties of the ultrafine WC-10Co alloys were investigated. The experimental results show that with only 0.3wt% P additions, full density WC-10Co cermets were obtained at temperature of 1250℃, which is 70 ℃ lower than that of the undoped counterparts. Lower sintering temperature can result in finer WC grain growth; therefore, the P-doped WC-10Co alloys exhibited higher hardness than the undoped ones. But at the same time, P doping could lead to sacrifice of fracture toughness ofWC-10Co cemented carbides.