316L不锈钢激光熔覆WC/Ni熔覆层组织与性能研究  

Study on Microstructure and Properties of WC/Ni Cladding Layer on 316L Stainless Steel by Laser Cladding

作　　者：何敏仪 师文庆 朱志凯 李凯玥 赵阳 黄江 He Minyi;Shi Wenqing;Zhu Zhikai;Li Kaiyue;Zhao Yang;Huang Jiang(School of Electronics and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China;Intelligent Marine Sensor Network and Equipment Engineering Technology Research Center of Guangdong Province,Zhanjiang 524088,Guangdong,China)

机构地区：[1]广东海洋大学电子与信息工程学院,广东湛江524088 [2]广东省智慧海洋传感网及其装备工程技术研究中心,广东湛江524088

出　　处：《应用激光》2023年第12期27-33,共7页Applied Laser

基　　金：国家自然科学基金项目(62073089);广东海洋大学大学生创新创业项目(CXXL2022159);广东海洋大学激光加工创新团队项目(CCTD201823)。

摘　　要：采用XL-F2000W光纤激光器,在316L不锈钢表面,利用激光熔覆技术,制备不同质量分数的Ni/WC合金涂层。借助光学显微镜、显微硬度计、电化学测试方法进行熔覆层的显微组织、硬度及耐腐蚀性检测及分析。结果表明,试验得到的熔覆涂层冶金结合良好,组织均匀、致密,且没有热裂纹和气孔等缺陷。熔覆层平均硬度达基体的2.2倍以上,并且随着WC质量分数的增加逐渐增加。当WC质量分数为40%时,熔覆层的耐蚀性最优。The present study employed an XL-F2000W fiber laser to prepare Ni/WC alloy coatings of varying mass fractions on the surface of 316L stainless steel using laser cladding technology.The cladding coatings microstructure,hardness,and corrosion resistance were assessed and analyzed through optical microscopy,microhardness testing,and an electrochemical test station.The results show that the cladding coating obtained by the experiment has good metallurgical bonding,uniform and compact structure,and no defects such as hot cracks and pores.The average hardness of the cladding coating exceeds the matrixs hardness by more than 2.2 times and progressively increases with rising WC mass fractions.Furthermore,when the WC mass fraction reaches 40%,the cladding coating demonstrates optimal corrosion resistance.

关 键 词：316L不锈钢 激光熔覆 WC含量 显微硬度 电化学腐蚀 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TG665[金属学及工艺—金属学]