Effect of nitriding time on the nitrided layer of AISI 304 austenitic stainless steel

被引:88
作者
Wang, LA [1 ]
Ji, SJ [1 ]
Sun, JC [1 ]
机构
[1] Dalian Maritime Univ, Inst Met & Technol, Dalian 116024, Peoples R China
基金
中国国家自然科学基金;
关键词
austenitic stainless steel; plasma nitriding; expanded austenite;
D O I
10.1016/j.surfcoat.2005.05.036
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The effect of plasma nitriding time on the microstructure and phase composition of nitrided layers on AISI 304 stainless steel was investigated. The phase composition and structure of the nitrided layer have been studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD analysis of samples treated at 420 degrees C showed the presence of gamma(N) phase in the nitrided layers for all nitriding times involved in this study. The lattice parameters calculated based on gamma(N)(111) and gamma(N)(200) were different and became larger with time for up to 5 h of nitriding treatment. The surface hardness of nitrided layer was also increased with nitriding time. The maximum thickness of the nitrided layer reached 27 mu m after 44 h of treatment in this study. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:5067 / 5070
页数:4
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