Properties of Carbide-Metal Cermets Prepared from Composite Powders by Direct Reduction and Carburization Process

摘要：

　　The transition-metal carbide cemented by metal has excellent combined properties.In this study,cermets were prepared by vacuum sintering from carbide-metal composite powders.The transition-metal oxides (Cr2O3,MoO3,V2O5,Nb2O5 and TiO2),cementing-metal oxides (Co3O4 and NiO),and carbon black were used as raw materials to pre-synthesize composite powders such as Cr3C2-Co,Mo2C-Co,VC-Co,NbC-Co and TiC-Ni,by a direct reduction and carburization process in vacuum.Results show that the participation of Co3O4 and NiO as well as the vacuum circumstance were greatly propitious to the carburization of transition-metal oxides into carbides.The carbothermal condition was greatly improved by the direct reduction and carburization process.

关键词： Carbide-metal cermet Composite powder Direct reduction and carburization

作者: L.Yan G.Q.Shao Z.Xiong X.L.Shi X.L.Duan T.G.Wang

作者单位: State Key Laboratory of Advanced Technology for Materials Synthesis & Processing,Wuhan University of Technology,122 Luoshi Road,Wuhan 430070,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1099-1103

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）