| 气压对904L奥氏体不锈钢低温离子渗氮组织与耐蚀性能的影响 |
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| 引用本文： | 冯晓庆,蒋如意,陈绪宏,邹国波,石维,向嵩.气压对904L奥氏体不锈钢低温离子渗氮组织与耐蚀性能的影响[J].材料热处理学报,2020,41(3):156-162. |
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| 作者姓名： | 冯晓庆 蒋如意 陈绪宏 邹国波 石维 向嵩 |
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| 作者单位： | 贵州大学材料与冶金学院,贵州贵阳550025;贵州省材料结构与强度重点实验室,贵州贵阳550025;重庆市计量质量检测研究院,重庆401123 |
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| 基金项目： | 贵州省教育厅创新群体重大研究项目;贵州省百层次创新型人才项目;国家自然科学基金;贵州省科技计划 |
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| 摘 要： | 通过辉光离子低温渗氮对904L超级奥氏体不锈钢(904Lss)进行表面改性处理,采用扫描电镜、X射线衍射仪(XRD)、电化学方法等研究了渗氮后试样的表面形貌、显微组织结构、硬度以及耐蚀性能。结果表明:100 Pa渗氮后的试样形成了强化相γN相,大大提高了904L不锈钢试样的表面硬度,高达1400 HV0.1;150 Pa渗氮后的试样产生了强氮化物CrN,其耐蚀性远远低于原始904L奥氏体不锈钢。
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| 关 键 词： | 904L奥氏体不锈钢 低温辉光离子渗氮 电化学测试 腐蚀 |
Effect of air pressure on microstructure and corrosion resistance of low temperature glow plasma nitriding layer of 904L austenitic stainless steel |
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| FENG Xiao-qing,JIANG Ru-yi,CHEN Xu-hong,ZOU Guo-bo,SHI Wei,XIANG Song.Effect of air pressure on microstructure and corrosion resistance of low temperature glow plasma nitriding layer of 904L austenitic stainless steel[J].Transactions of Materials and Heat Treatment,2020,41(3):156-162. |
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| Authors: | FENG Xiao-qing JIANG Ru-yi CHEN Xu-hong ZOU Guo-bo SHI Wei XIANG Song |
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| Affiliation: | (College of Materials and Metallurgy,University of Guizhou,Guiyang 550025,China;Laboratory for Mechanical Behavior and Microstructure of Materials,Guiyang 550025,China;Institute of Metrology and quality Inspection of Chongqing,Chongqing 401123,China) |
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| Abstract: | Surface modification of 904 L super austenitic stainless steel was performed by glow plasma nitriding at low temperature.The surface morphology,microstructure,hardness and corrosion resistance of the nitrided samples were studied by means of scanning electron microscopy(SEM),X-ray diffraction(XRD)and electrochemical method.The results show that the reinforced phaseγN phase is formed in the sample after nitriding with 100 Pa pressure,which greatly improves the surface hardness of the 904 L stainless steel sample,up to 1400 HV0.1.The strong nitride CrN phase is formed in the sample after nitriding with 150 Pa pressure,which leads to its corrosion resistance is much lower than that of the original 904 L austenitic stainless steel. |
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| Keywords: | 904L austenitic stainless steel low temperature glow plasma nitriding electrochemical test corrosion |
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