孙辉,徐进,胡树兵,秦岩平,田静静,廖攀

• 1:华中科技大学材料科学与工程学院
• 2:中国长江电力股份有限公司

摘要(Abstract)：

在同一工艺参数下在00Cr13Ni4Mo马氏体不锈钢表面制备镀镍碳纳米管质量分数为0.5%～2.0%的钴基合金涂层，利用扫描电镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)、显微硬度计、摩擦磨损测试和空泡腐蚀测试等研究了涂层的显微组织、物相组成、显微硬度、耐磨损性能和耐空泡腐蚀性能。结果表明：激光熔覆过程使部分碳纳米管烧损，一部分得以保留，当碳纳米管含量达到1.0%时涂层出现了较明显的裂纹；随着碳纳米管含量的增加，涂层的硬度最高达到680 HV0.05;当碳纳米管含量为1.0%时，涂层的磨损量最低，为0.67 mg,耐磨性提高；由于适量纳米碳管对涂层的细晶强韧化作用，与Stellite6涂层相比，当碳纳米管含量为0.5%时，涂层的空泡腐蚀质量损失由4.93 mg降低到1.86 mg,冲蚀质量损失由1.5 mg降低至0.7 mg,表明涂层的抗空蚀性能和抗冲蚀性能均提高；碳纳米管含量超过1.0%时涂层的抗空蚀性能和抗冲蚀性能均下降。

关键词(KeyWords)： 钴基合金;空泡腐蚀;激光熔覆;纳米碳管

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划课题(2020YFB2010304)

作者(Author): 孙辉,徐进,胡树兵,秦岩平,田静静,廖攀

DOI: 10.13289/j.issn.1009-6264.2022-0649

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