Al_2O_3含量对Mo-WC-Co钼合金性能的影响  

Effects of Al_2O_3 Content on Properties of Mo-WC-Co Alloy

作　　者：欧阳玲玉[1] 叶艳君[2] 刘芳[2] 

机构地区：[1]江西应用技术职业学院 [2]江西理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2016年第12期1323-1326,共4页Special Casting & Nonferrous Alloys

摘　　要：采用粉末冶金技术制备了Mo-WC-Co合金,利用金相显微镜、XRD、SEM和EDS等手段分析了Al_2O_3添加量对合金组织的影响,并研究Al_2O_3含量对合金硬度及耐磨性的影响。研究表明,Mo-WC-Co合金的晶粒度和孔隙率随着Al_2O_3含量的增加逐渐减小;当Al_2O_3含量为0.2%时合金烧结致密度最高;Al_2O_3含量超过0.2%时合金的硬度趋于平稳但耐磨性下降。Mo-WC-Co alloy was prepared by powder melullurgy method.Effects of Al2O3 content on microstructure,hardness and wear-resistance of the alloy were investigated by OM,XRD,SEM and EDS.The results reveal that grain size and porosities of the Mo-WC-Co alloy are reduced with increasing in Al2O3 content.The relative density of the alloy with 0.2% Al2O3 content reaches the maximum value.With Al2O3 content more than 0.2%,hardness of the alloy keeps stable while the wear-resistance is declined.

关 键 词：AL2O3 Mo-WC-Co钼合金 性能 

分 类 号：TF125.241[冶金工程—粉末冶金]