Preparation,Sintering Microstructure and Properties of Ni-Mo-C/Ti(C,N) Coated Powders
Ni-Mo-C/Ti(C,N) coated powders,namely composite powders that Ni-Mo alloy and Mo2C coated Ti(C,N) powders were synthesized by heterogeneous precipitation-thermal reduction method,then pressed and vacuum sintered to fabricate cermets.The chemical composition,microstructure and phases of the composite powders and the microstructure and properties of sintered cermets were investigated by SEM,EDS,XRD,etc.The results show that a fine and uniform microstructure of (Ti,Mo)(C,N)-Ni cermets is obtained and there is no obvious core-rim structure can be found in the microstructure; the fracture micrographs of the cermets show that the fracture is mainly characterized by inter-granular fractures and dimple fractures; the Ni3Ti phase is founded in the cermets; with the exception of fracture toughness,the mechanical properties of the cermets are better than cermets which prepared by conventional process; the magnetic properties of the cermets are not detected.
Ti(C,N) based cermets heterogeneous precipitation coating core-rim structure
Zhou Shuzhu Luo Cheng Gao Lingyan Wu Xiaobo Zhu Lei Tan Jinhao
School of Metallurgical Engineering,Hunan University of Technology,Zhuzhou,412008,China;Zhuzhou Ceme School of Metallurgical Engineering,Hunan University of Technology,Zhuzhou,412008,China Zhuzhou Cemented Carbide Cutting Tools Co.,Ltd,Zhuzhou,412007,China
国际会议
2012 Zhuzhou International Conference on Cemented Carbides(株洲硬质合金国际学术会议)
株洲
英文
287-294
2012-09-12（万方平台首次上网日期，不代表论文的发表时间）