离子渗氮对304L不锈钢组织及高温耐磨性能的影响

doi:10.13251/j.issn.0254-6051.2022.07.043

金属热处理 ›› 2022, Vol. 47 ›› Issue (7): 253-258.DOI: 10.13251/j.issn.0254-6051.2022.07.043

离子渗氮对304L不锈钢组织及高温耐磨性能的影响

曹振^1,2,3, 李季¹, 罗平⁴, 李佳惠^1,2,3, 李炯利^1,2,3, 王旭东^1,2,3

1.北京石墨烯技术研究院有限公司, 北京 100094;
2.中国航发北京航空材料研究院, 北京 100095;
3.北京市石墨烯及应用工程技术研究中心, 北京 100095;
4.北京机电研究所有限公司, 北京 100083

收稿日期:2022-04-12 修回日期:2022-05-20 出版日期:2022-07-25 发布日期:2022-08-12
通讯作者: 李季,硕士,E-mail:lijiyjs@163.com
作者简介:曹振(1989—),男,中级工程师,硕士,主要研究方向为金属基复合材料制备及表面改性技术。
基金资助:
北京市科技新星计划(Z191100001119102);河北省科技冬奥专项(21471101D)

Effect of plasma nitriding on microstructure and high temperature wear resistance of 304L stainless steel

Cao Zhen^1,2,3, Li Ji¹, Luo Ping⁴, Li Jiahui^1,2,3, Li Jiongli^1,2,3, Wang Xudong^1,2,3

1. Beijing Institute of Graphene Technology, Beijing 100094, China;
2. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
3. Beijing Engineering Research Centre of Graphene Application, Beijing 100095, China;
4. Beijing Research Institute of Mechanical and Electrical Technology Ltd., Beijing 100083, China

Received:2022-04-12 Revised:2022-05-20 Online:2022-07-25 Published:2022-08-12

摘要/Abstract

摘要： 以焚烧炉用热电偶304L不锈钢套管为研究对象,开展了不同温度的离子渗氮试验研究。采用光学显微镜、扫描电镜、显微硬度计等分析了304L不锈钢离子渗氮前后的微观结构与力学性能,并研究了其在400 ℃的耐磨损性能。结果表明,304L不锈钢离子渗氮后,可形成硬度1300 HV以上的表面硬化层。随着渗氮温度的提高,表面硬度有所提升,同时硬化层厚度显著增加。离子渗氮可提高304L不锈钢的磨损性能及耐高温氧化性能。

关键词: 焚烧炉热电偶套管, 304L不锈钢, 离子渗氮, 硬化层, 高温耐磨性能

Abstract: An experimental study on plasma nitriding with different temperatures was carried out on the 304L stainless steel thermowell for incinerator as the research object. Microstructure and properties of the 304L stainless steel thermowell before and after plasma nitriding were analyzed by OM, SEM, microhardness tester and the wear resistance at 400 ℃ was studied. The results show that surface hardened layer over 1300 HV is formed after plasma nitriding of the 304L stainless steel. With the increase of nitriding temperature, the surface hardness is improved and the thickness of hardened layer is increased significantly. The wear and high temperature oxidation resistance of the 304L stainless steel are improved by plasma nitriding.

Key words: thermowell for incinerator, 304L stainless steel, plasma nitriding, hardened layer, high temperature wear resistance

中图分类号:

TG156.8

曹振, 李季, 罗平, 李佳惠, 李炯利, 王旭东. 离子渗氮对304L不锈钢组织及高温耐磨性能的影响[J]. 金属热处理, 2022, 47(7): 253-258.

Cao Zhen, Li Ji, Luo Ping, Li Jiahui, Li Jiongli, Wang Xudong. Effect of plasma nitriding on microstructure and high temperature wear resistance of 304L stainless steel[J]. Heat Treatment of Metals, 2022, 47(7): 253-258.

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离子渗氮对304L不锈钢组织及高温耐磨性能的影响

Effect of plasma nitriding on microstructure and high temperature wear resistance of 304L stainless steel

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