刘瑞良,徐昂,徐宏涛,韦朝阳,闫牧夫,乔英杰

• 1:哈尔滨工程大学材料科学与化学工程学院超轻材料与表面技术教育部重点实验室
• 2:哈尔滨工业大学材料科学与工程学院金属精密热加工国家级重点实验室

摘要(Abstract)：

对AISI420不锈钢进行低温等离子体渗氮处理,采用金相观察、X射线分析等手段对渗层组织结构进行表征,利用显微硬度仪以及腐蚀极化曲线等对渗层硬度和耐蚀性能进行测试。结果表明,不锈钢表面渗层组织均匀,渗层厚度随着温度和时间的增加而增加,渗层表面主要由Fe_4N和少量的过饱和含氮α相组成。渗氮后,不锈钢硬度明显增加,且随着时间的延长,渗层硬度升高;渗氮4 h和8 h后的试样耐蚀性均略有下降,但处理12 h后的试样耐蚀性升高,且经渗氮处理后,不锈钢表面形成钝化膜的半导体特性由未处理不锈钢的p型转变为n型。

关键词(KeyWords)： 马氏体不锈钢;低温等离子渗氮;组织;耐蚀性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51401062,51371070);; 高等学校博士学科点专项科研基金(20122304120038);; 哈尔滨市科技创新人才研究专项基金(2014RFQXJ036)

作者(Author): 刘瑞良,徐昂,徐宏涛,韦朝阳,闫牧夫,乔英杰

DOI: 10.13289/j.issn.1009-6264.2016-X161

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