朱福栋,朱必云,马长平

• 1:鄂尔多斯职业学院机械工程系

摘要(Abstract)：

采用光纤激光器在45钢基体上制备了Co/WC增强Ni基复合涂层。利用扫描电镜(SEM)、能谱仪(EDS)、显微硬度计及摩擦磨损试验机等研究了熔覆层的微观组织、成分分布、硬度及耐磨性。结果表明:激光功率对WC分布具有一定影响,随激光功率增加,WC分布更加均匀,但WC烧蚀程度也有所增加,熔覆层的显微硬度整体上呈先上升后下降趋势;当激光功率为700 W时,熔覆层主要包括WC、FeNi_3及Co_3W、WB_2等物相,此时熔覆层平均硬度最高,达到730 HV0.3,是基体(195 HV0.3)的3.7倍,熔覆层磨损率(2.87×10~(-4)g/m)是基体磨损率(9.18×10~(-4)g/m)的1/3。

关键词(KeyWords)： 增材制造;激光熔覆;复合涂层;显微组织;耐磨性能

Abstract:

Keywords:

基金项目(Foundation): 内蒙古自治区高等学校科学研究项目(NJZY18314)

作者(Author): 朱福栋,朱必云,马长平

DOI: 10.13289/j.issn.1009-6264.2019-0124

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