添加金属Mo对WC-Co硬质合金组织和性能的影响  

Effect of Mo Addition on Microstructure and Mechanical Property of WC-Co-based Carbides

作　　者：王丽利[1] 李海艳[1] 刘宁[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《稀有金属与硬质合金》2010年第2期31-35,共5页Rare Metals and Cemented Carbides

摘　　要：采用粉末冶金工艺制备了六组不同Mo添加量的硬质合金材料。在常温下测量材料的力学性能,并采用XRD、SEM等方法对材料的相结构、组织形貌等进行分析。试验结果表明,少量添加金属Mo可以细化WC晶粒,提高材料的相对密度和硬度,但是降低了材料的抗弯强度;当Mo添加量为2.4%时,材料的显微组织及综合力学性能最好。Six（6） groups of WC-Co carbides with different Mo content were manufactured by powder metallurgy.The mechanical properties were measured at room temperature,and the phase structure and microstructure were studied through XRD,SEM and EDS.The result shows that the small addition of Mo can refine WC grain improve the relative density and hardness;but flexural strength is reduced.When the Mo addition reaches 2.4%,the material has the best microstructure and mechanical property.

关 键 词：WC-CO硬质合金 Mo添加量 显微组织 力学性能 

分 类 号：TF125.3[冶金工程—粉末冶金]