王晓威,黄本生,武博文,杨芯艺,黄思语

• 1:西南石油大学新能源与材料学院
• 2:西南石油大学能源装备研究院
• 3:中国核动力研究设计院核反应堆系统设计技术重点实验室

摘要(Abstract)：

采用等离子熔覆技术在20钢表面制备了不同成分的CrMnFeCoNiMo_x(x=0、1、1.5)系高熵合金涂层。通过光学显微镜(OM)、扫描电镜(SEM)、能谱仪(EDS)及X射线衍射仪(XRD)等分析了涂层的微观结构；利用显微硬度计和电化学工作站分析了涂层的硬度和耐蚀性。结果表明：在不含Mo的高熵合金(HEA)涂层中存在大量的枝晶和胞状晶，添加Mo元素后主要为等轴晶。3种涂层的基体组织主要为体心立方(BCC)结构，Mo元素的添加使涂层中形成了一定量的第二相。CrMnFeCoNiMo_(1.5)涂层的第二相含量最多，硬度最大(约720 HV0.3),约为基材的4倍。Mo元素添加后，涂层的耐蚀性显著提升，CrMnFeCoNiMo_1涂层的耐蚀性能最好，腐蚀速率为0.141 mm/year,约为基材的1/20。

关键词(KeyWords)： 高熵合金涂层;等离子熔覆;Mo元素;显微硬度;电化学腐蚀

Abstract:

Keywords:

基金项目(Foundation): 大学生创新创业训练计划(202110615126);; 西南石油大学大学生课外开放试验项目(2021KSZ61008)

作者(Author): 王晓威,黄本生,武博文,杨芯艺,黄思语

DOI: 10.13289/j.issn.1009-6264.2022-0491

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