NbC含量对Ti(C,N)基金属陶瓷组织和力学性能的影响  

Effect of the Content of NbC on the Microstructure and Mechanical Properties of Ti(C,N) Based Cermets

作　　者：谭锦颢[1] 周书助[1,2] 朱磊 胡倞 罗成[1] 

机构地区：[1]湖南工业大学包装与材料工程学院,湖南株洲412000 [2]株洲钻石切削刀具股份有限公司,湖南株洲412007

出　　处：《硬质合金》2010年第2期78-82,共5页Cemented Carbides

基　　金：国家支撑计划项目(2007BAF32B07);湖南省教育厅资助科研项目(06D073)

摘　　要：研究了NbC含量对两种不同Ti(C,N)/TiC质量比金属陶瓷组织和性能的影响。结果表明:随着NbC含量的增长,环形相变得更加完整,粘接相分布越均匀。TiC和NbC含量的不同,影响了溶解和扩散,造成环形相与硬质相的体积分数和元素分布不同。力学性能测试表明,Ti(C,N)/TiC质量比为3︰2、w(NbC)=6%的试样的综合力学性能较好。Effect of the content of NbC on the microstructure and mechanical properties of Ti（C, N） based cermets with two different mass ratio of Ti（C,N） / TiC were investigated. Results show that rim structure becomes more complete and bind phase become more u- niformly distributed with the increasing of NbC content. The different contents of TiC and NbC can influence solution and diffusion, so it brings about variety of volume fraction of ring structure and the distribution of elements. Mechanical performance test shows that when the mass ratio of Ti（C,N） / TiC is 3 ： 2, cermets added 6 wt% of NbC manifest the better comprehensive mechanical properties.

关 键 词：Ti(C N)基金属陶瓷 NBC 显微组织 力学性能 

分 类 号：TG148[一般工业技术—材料科学与工程]