共沉淀法制备含钇的碳化钨粉  

Preparation of WC Powder Containing Yttrium by Co-precipitation

作　　者：邓冲[1] 谭敦强[1] 朱红波[1] 王晓茹 何文[1] 易志强 邝海[1] DENG Chong;TAN Dun-qiang;ZHU Hong-bo;WANG Xiao-ru;HE Wen;YI Zhi-qiang;KUANG Hai(School of Materials Science and Engineering,Nanchang University, Nanchang 330031,China)

机构地区：[1]南昌大学材料科学与工程学院

出　　处：《稀有金属与硬质合金》2019年第3期31-35,共5页Rare Metals and Cemented Carbides

摘　　要：研究了钨酸铵蒸发结晶过程中滴加硝酸钇水溶液共沉淀法掺杂钇的工艺,制备出掺钇的仲钨酸铵(APT)粉末,再经氧化还原、配碳、碳化最终制备出含钇的碳化钨粉。结果表明,共沉淀法制备的APT粉末中Y分布相对均匀,主要以Y(OH)3形式存在。掺0.5%Y和1%Y碳化钨粉一次颗粒的平均粒径分别为0.37μm和0.28μm。掺杂钇起到了细化碳化钨粉末的作用。The process of doping yttrium by co-precipitation with yttrium nitrate aqueous solution added during evaporation crystallization of ammonium tungstate was studied. Yttrium-doped ammonium paratungstate powder was prepared by the above process,and then tungsten carbide powder containing yttrium was prepared by redox,carbon distribution and carbonization.The results show that yttrium in APT pow der prepared by co-precipitation has relatively uniform distribution, and exists mainly in the form of Y(OH)3. The average particle sizes of tungsten carbide powders doped with 0.5%Y and 1%Y is 0.37μm and 0. 28μm,respectively.Yttrium doping has the effect of refining tungsten carbide powder.

关 键 词：碳化钨粉 钇掺杂 共沉淀 仲钨酸铵 钨酸铵 硝酸钇 

分 类 号：TG146.411[一般工业技术—材料科学与工程]