中文摘要：

采用强流脉冲电子束（HCPEB）表面改性技术对YG8硬质合金表面进行辐照处理试验。利用金相显微镜、X射线衍射仪和扫描电镜对处理样品的表层组织进行分析,测量改性样品的显微硬度和摩擦磨损性能指标。结果表明,强流脉冲电子束处理使YG8样品表层重熔平整,WC颗粒形状圆整并与粘结剂Co基体发生溶解扩散,表层显微硬度增加到3523.6 HK,耐磨性提高约19%。

英文摘要：

High current pulsed electron beam（HCPEB） surface modification technique was used for treating YG8 hard alloy sample.The microstructure in surface layer of the modified sample was analyzed by optical microscopy,X-ray diffractometer and scanning electron microscopy.The mechanical properties of the modified sample were measured by microhardness and friction wear test machines.The results show that the HCPEB irradiation leads to the melting and smoothing of YG8 alloy sample surface.The WC particles change to be rounder and dissolve into the Co bonding base.The surface microhardness of YG8 alloy increases to 3523.6 HK after treating by HCPEB and the wear resistance is improved about 19%.