李美艳,韩彬,王勇,宋立新

• 1:中国石油大学(华东)机电工程学院
• 2:海洋石油工程(青岛)有限公司

摘要(Abstract)：

在45钢表面激光熔覆过程中同步施加超声振动制备Ni55涂层,采用SEM、XRD等手段分析熔覆层的显微组织及相组成,并检测熔覆层的耐蚀性和耐磨性能。结果表明,Ni55熔覆层内生成方向性较强的树枝晶,由γ-(Fe,Ni)固溶体和M23C6组成。同步施加超声振动对相组成无影响,但使熔覆层底部粗大的柱状晶消失,中部和顶部方向性较强的树枝晶被打乱,生成细小的树枝晶。此外,超声振动使熔覆层的显微硬度提高至635 HV0.1,耐蚀性明显提高,腐蚀电流密度约为Ni55熔覆层的1/4。施加超声振动的熔覆层耐磨性能优于未施加超声振动的试样。

关键词(KeyWords)： 超声振动;激光熔覆;组织;耐蚀性;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 石油天然气装备教育部重点实验室(西南石油大学)资助项目(OGE201403-04);; 国家自然科学基金(51179202);; 国家“863”计划项目(2012AA09A203);; 山东省自主创新计划(2012CX80101);; 山东省自然科学基金(ZR2014EEQ037)

作者(Author): 李美艳,韩彬,王勇,宋立新

DOI: 10.13289/j.issn.1009-6264.2015.10.032

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