多组元硬质相增强Mo2FeB2基金属陶瓷的组织和性能研究  

Study on the microstructure and properties of multi-component hard phase reinforced Mo2FeB2 based cermets

作　　者：陶则旭 从善海[1] 彭家健[1] 王晓峰[1] TAO Ze-xu;CONG Shan-hai;PENG Jia-jian;WANG Xiao-feng(Key Laboratory of Ferrous Metallurgy and Resources Utilization, Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室

出　　处：《粉末冶金工业》2018年第3期44-47,共4页Powder Metallurgy Industry

摘　　要：以Mo、FeB和Fe等为原料,添加不同含量的WC、NbC、TiC多组元硬质相结合真空液相烧结工艺制备了Mo2FeB2基金属陶瓷。采用金相显微镜、扫描电子显微镜、能谱分析、X射线衍射仪、洛氏硬度检测和耐磨实验,研究了多组元硬质相对试样的组织和性能的影响。结果表明：多组元硬质相起细化组织和弥散强化的作用,因而提高了金属陶瓷的硬度和耐磨损性能;当WC、NbC、TiC的质量分数分别为10%、4%和5%时,试样的硬度最高,耐磨性最好。Mo2FeB2 based cermets were prepared by vacuum liquid phase sintering process using Mo,FeB and Fe powder as raw materials and adding various contents of WC,NbC,TiC. The effects of multi-component hard phase on the microstructure and properties of samples were studied by metallographic microscope,scanning electron microscope,energy spectrum analysis,X-ray diffraction,rockwell hardness test and wear test. The results show that the multi-component hard phase addition can refine the microstructure and dispersion strengthening,thus improving the hardness and wear resistance of cermets. When the mass percent of WC,NbC and TiC is 10%,4% and 5%,respectively,the hardness and wear resistance of the samples are the highest.

关 键 词：MO2FEB2基金属陶瓷 多组元 金属碳化物 

分 类 号：TF125.4[冶金工程—粉末冶金]