文献类型：期刊文献

中文题名：Cu质量分数对激光熔覆Ni-Cu-WC涂层组织和性能的影响

英文题名：Effect of Cu mass fraction on microstructure and properties of laser cladded Ni-Cu-WC coatings

作者：梁飞龙[1];师文庆[2];李凯玥[2];朱志凯[2];吴腾[2]

机构：[1]广东海洋大学船舶与海运学院,湛江524005;[2]广东海洋大学电子与信息工程学院,湛江524088

年份：2023

卷号：47

期号：5

起止页码：653

中文期刊名：激光技术

外文期刊名：Laser Technology

收录：CSTPCD、、Scopus、CSCD_E2023_2024、北大核心、CSCD、北大核心2020

基金：国家自然科学基金资助项目(62073089);广东省普通高校重点领域专项项目(2020ZDZX2061)。

语种：中文

中文关键词：激光技术;复合涂层;激光熔覆;电化学腐蚀;316L不锈钢

外文关键词：laser technique;composite coating;laser cladding;electrochemical corrosion;316L stainless steel

中文摘要：为了提高316L基材的耐腐蚀性能,延长其在海洋环境下的使用寿命,采用激光熔覆技术在316L不锈钢上制备出具有不同含铜量的Ni-Cu-WC的熔覆层,利用扫描电子显微镜、能谱仪、显微硬度计、电化学工作站对熔覆层的显微组织、显微硬度及耐腐蚀性能进行测试并分析其腐蚀行为。结果表明,熔覆层与基材结合状况良好,Cu元素的加入部分抑制了碳化物增强相的形成而导致熔覆层的硬度有所下降;同时熔覆层中的Cu元素可以有效提高其在海水中的耐腐蚀性,Cu质量分数为0.1时,抗腐蚀性能最佳,在NaCl溶液(质量分数为0.035)中的腐蚀电位提升至-0.864 V,腐蚀电流密度降低至0.1049μA/cm^(2)。此研究为后续激光熔覆制备耐海水腐蚀涂层提供了理论参考依据。

外文摘要：To improve the corrosion resistance of 316L substrate and extend its service life in marine environment,Ni-Cu-WC cladding layers with different copper content were prepared on 316L stainless steel by laser cladding technology.The microstructure,hardness,corrosion resistance,and corrosion behavior of the cladding layer were analyzed by scanning electron microscope,energy dispersive spectroscopy,microhardness tester,and electrochemical workstation.The results show that the coating has good forming quality,and the dendrites of the cladding layer is induced by excessive Cu addition.The addition of Cu partially inhibits the formation of carbide reinforcing phase,resulting in a decrease in the hardness of the cladding layer.At the same time,the Cu element in the cladding layer can effectively improve its corrosion resistance in seawater.The experimental results show that the corrosion resistance is the best when the mass fraction of Cu is 0.1,the corrosion potential increases to-0.864 V in the NaCl solution(mass fraction of 0.035),and the corrosion current density decreases to 0.1049μA/cm^(2),respectively.This study provides a theoretical reference for the preparation of seawater corrosion resistant coatings by laser cladding.