崔烺,刘光,贾利,王春婷,郑子云,马冰

• 1:中国兵器科学研究院宁波分院焊接与表面再制造技术研究室
• 2:中国科学院宁波材料技术与工程研究所海洋新材料与应用技术重点实验室

摘要(Abstract)：

为了提高AZ80镁合金的耐磨及耐腐蚀性能,利用冷喷涂技术在其表面制备了316L不锈钢涂层。采用X射线衍射仪及扫描电镜对涂层的相结构、微观组织及粒子与基板的碰撞行为进行了分析,采用万能力学试验机测试了涂层的结合强度及内聚强度,并分别测试了涂层与块体的摩擦磨损及电化学腐蚀性能。结果表明:冷喷涂316L粒子与镁合金基板的碰撞行为主要呈现两种方式,一种是粒子在镁合金基板表面产生冲蚀坑,未能形成有效结合,另一种是粒子以球形方式嵌入镁合金基板内部,基板在两种碰撞行为中都形成射流,结合机理主要是机械咬合。316L涂层磨损率为1.16×10~(-4) mm~3/(N·m),其耐磨性较镁合金提高了8倍,涂层的自腐蚀电流较镁合金基体降低了4个数量级,能够有效保护镁合金基板。

关键词(KeyWords)： 冷喷涂;316L不锈钢涂层;碰撞行为;摩擦磨损;电化学腐蚀

Abstract:

Keywords:

基金项目(Foundation): 宁波市科技创新团队基金(2014B82001)

作者(Author): 崔烺,刘光,贾利,王春婷,郑子云,马冰

DOI: 10.13289/j.issn.1009-6264.2018-0550

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