焦东玲,黄海滨,丁红珍,邱万奇

• 1:华南理工大学材料科学与工程学院
• 2:顺德职业技术学院机电工程学院

摘要(Abstract)：

采用预三价镀铬再穿透气体渗氮的方法,在纯铁表面制备CrN/Cr_2N涂层。研究不同镀铬层厚度、渗氮温度和时间所形成涂层的微观结构和相组成变化规律。随渗氮温度从540℃提高到700℃,镀铬层相结构变化为:Cr→CrN/Cr_2N(具有超点阵结构的Cr_2N)→CrN/Cr_2N。在同一温度(640℃)渗氮,随时间延长,Cr→CrN/Cr_2N,形成大量具有超点阵结构的Cr_2N相。SEM/EPMA测试结果表明,采用该复合处理制备的氮化铬层与基体间可形成互扩散的冶金结合,实现氮化铬层与基体间在组织结构上的平缓过渡,有利于提高涂层性能。

关键词(KeyWords)： 氮化铬;渗氮;镀铬;CrN;Cr2N

Abstract:

Keywords:

基金项目(Foundation): 广东省自然科学基金(2016A030313450,2015A030313223);; 中央高校基本科研业务费重点项目(2015ZM065);; 国家自然科学基金(51271079)

作者(Author): 焦东玲,黄海滨,丁红珍,邱万奇

DOI: 10.13289/j.issn.1009-6264.2016-X296

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