激光熔覆Ni60+WC粉末涂层的组织及性能研究  

Study on Microstructure and Properties of Laser Cladding Ni60+wC Powder Coating

作　　者：吴香林[1] 安芬菊[1] 李德荣[1] 黄江 王有明 吴敬权[1,3] Wu Xianglin;An Fenju;Li Derong;Huang Jiang;Wang Youming;Wu Jingquan(College of Mechanical and Power Engineering,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China;College of Electronic and Information Engineering,Guangdong Ocean University,Zhanjiang 524088,Guangdong,China;Guangdong Marine Equipment and Manufacturing Engineering Research Center,Zhanjiang 524088,Guangdong,China)

机构地区：[1]广东海洋大学机械工程学院,广东湛江524088 [2]广东海洋大学电子与信息工程学院,广东湛江524088 [3]广东省海洋装备及制造工程技术研究中心,广东湛江524088

出　　处：《应用激光》2023年第11期1-8,共8页Applied Laser

基　　金：国家自然科学基金项目(62073089);广东省教育厅特色创新项目(Q19012)。

摘　　要：光裸星虫采收机的关键零部件翻沙铲,长期工作在海水环境中,容易磨损和腐蚀,导致零件失效,为增强翻沙铲的硬度和耐腐蚀性,在其表面熔覆一层强化层,延长翻沙铲的使用寿命。运用XL-F2000T型激光器在06Cr17Ni12Mo2不锈钢表面熔覆10%、20%、30%3种不同质量分数的WC与Ni混合作为增强涂层。使用MHVD-1000AT硬度检测设备对截切面进行硬度测量。利用岛津XRD分析物相组成。采用CS Studio电化学工作站测试在3.5%NaCl溶液中的耐腐蚀性能。分析发现WC+Ni60复合涂层能够有效提高06Cr17Ni12Mo2不锈钢表面硬度,平均硬度随着WC的增加而增加,但30%WC+Ni60的熔覆层试样截切面硬度有较大波动,10%WC+Ni60的熔覆层硬度较为平稳。各熔覆层自腐蚀电位E_(corr)均大于基材,其中10%WC+Ni60耐腐蚀性较好;可见10%WC+Ni60既能保证高且稳定的硬度,又能保证很好的耐腐蚀性。The trowel shovel,the key component of the nudus harvester,is easy to wear and corrode after working in seawater for a long time,which leads to the failure of the parts.To improve its hardness and corrosion resistance,a reinforcement layer can be applied to its surface to extend its lifespan.In this study,XL-F2000T laser was used to cladding 10%,20%and 30%WC and Ni on the surface of 06Cr17Nil2Mo2 stainless steel as reinforced coatings.Use MHVD-1000AT hardness testing equipment to measure the hardness of the cross section.The phase composition was analyzed by Shimadzu XRD.The corrosion resistance in 3.5%NaCl solution was tested by CS Studio electrochemical workstation.The findings suggest that a WC+Ni60 composite coating can significantly enhance the surface hardness of 06Cr17Nil2Mo2 stainless steel.While the average hardness increases with WC content,the cross-sectional hardness of the sample clad with 30%WC+Ni60 displays significant fluctua-tion,whereas the hardness of the 10%WC+Ni60 cladding layer remains relatively stable.Furthermore,each cladding layer's self-corrosion potential E_(corr) is positive relative to the substrate,with 10%wWC+Ni60 exhibiting superior corrosion resistance.Comprehensive comparative analysis shows that 10%wWC+Ni60 can ensure both high,consistent hardness and excellent corro-sion resistance.

关 键 词：Ni60-WC 激光熔覆 表面改性 复合涂层 

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]