刘瑞良,韦朝阳,徐昂,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AISI431马氏体不锈钢进行低温等离子体改性处理,通过金相观察、X射线分析等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,通过低温改性处理,均可在不锈钢表面获得含有"膨胀"α相的渗层,其中渗氮处理后表面主要含Fe4N和含氮"膨胀"α相,渗碳处理后表面主要为含碳"膨胀"α相,且渗氮层厚度明显大于渗碳层厚度。经低温改性处理后,不锈钢表面硬度显著提升,且渗氮层硬度高于渗碳层硬度。然而,在本试验条件下渗氮渗碳的不锈钢耐蚀性能均略有下降,和渗氮相比,渗碳处理后的试样耐蚀性能更差,且在腐蚀过程中,两类渗层表面所产生钝化膜均为具有n型半导体特性。

关键词(KeyWords)： 不锈钢;低温等离子渗氮渗碳;“膨胀”α相;耐蚀性能

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,韦朝阳,徐昂,闫牧夫,乔英杰

DOI: 10.13289/j.issn.1009-6264.2017.04.024

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