316奥氏体不锈钢渗N/镀CrN复合改性层组织与性能

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (1): 13-19.

316奥氏体不锈钢渗N/镀CrN复合改性层组织与性能

李庆林¹, 赵尚¹, 胡秋晨¹, 胡巍巍², 兰晔峰¹

1.兰州理工大学材料科学与工程学院, 甘肃兰州 730050;
2.兰州万里航空机电有限责任公司锻造分厂, 甘肃兰州 730030

收稿日期:2019-02-25 出版日期:2020-02-28 发布日期:2020-06-23
作者简介:李庆林(1978-),男,甘肃临洮人,副研究员.
基金资助:
国家自然科学基金(51561021)

Microstructure and performance of 316 austenitic stainless steel modified compositely by means of ion nitriding/CrN coating

LI Qing-lin¹, ZHAO Shang¹, HU Qiu-chen¹, HU Wei-wei², LAN Ye-feng¹

1. College of Materials Science and Engineering, Lanzhou Univ. of Tech. , Lanzhou 730050, China;
2. Forging Factory, Lanzhou Wanli Aviation Electromechanical Co. Ltd, Lanzhou 730030, China

Received:2019-02-25 Online:2020-02-28 Published:2020-06-23

摘要/Abstract

摘要： 分别在400、440、480 ℃下对316奥氏体不锈钢进行12 h的渗氮处理,再对渗氮后的试样进行物理气相沉积(PVD)镀CrN薄膜.采用扫描电镜(SEM)、光学显微镜(OM)、X射线衍射仪(XRD)、维氏显微硬度计和材料表面综合测试仪(HSR-2M)、电化学工作站等对复合改性层的表面形貌、截面形貌、成分、显微硬度、耐磨性以及耐蚀性进行测试.结果表明:400 ℃离子渗N/镀CrN试样耐磨性最差,耐蚀性最好;而480 ℃离子渗N/镀CrN试样耐磨性最好,耐蚀性最差;但比相同温度下单独渗氮试样的综合性能好.

关键词: 316奥氏体不锈钢, 渗氮, 物理气相沉积(PVD), CrN薄膜

Abstract: 315 austenitic stainless steel was nitrided respectively at 400, 440, and 480 ℃ for 12 h, and then the physicalvapour deposition (PVD) and CrN film coating were carried out for the nitrided samples. The surface morphology, cross-section morphology, composition, microhardness, wear resistance, and corrosion resistance of the compositely modifying layer were tested by means of scanning electron microscope(SEM), optical microscope(OM) and X-ray diffractometer (XRD), Vickers hardness tester, material surface tester(HSR-2M), and electrochemical workstation. The result showed that the sample with ion nitriding at 400 ℃/CrN film coating would exhibit the best corrosion resistance and the worst wear resistance; the sample with ion nitriding at 480 ℃/CrN film coating would have the worst corrosion resistance and the best wear resistance, but its performance would better than that of a sample nitrided only at the same temperature.

Key words: 316 austenitic stainless steel, nitriding, physical vapour deposition(PVD), CrNfilm

中图分类号:

TG174.4

李庆林, 赵尚, 胡秋晨, 胡巍巍, 兰晔峰. 316奥氏体不锈钢渗N/镀CrN复合改性层组织与性能[J]. 兰州理工大学学报, 2020, 46(1): 13-19.

LI Qing-lin, ZHAO Shang, HU Qiu-chen, HU Wei-wei, LAN Ye-feng. Microstructure and performance of 316 austenitic stainless steel modified compositely by means of ion nitriding/CrN coating[J]. Journal of Lanzhou University of Technology, 2020, 46(1): 13-19.

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