Low pressure plasma arc source ion nitriding of austenitic stainless steel

被引：28

作者：

Wang, LA ^{[1
]}

Xu, XL ^{[1
]}

Yu, ZW ^{[1
]}

Hei, ZK ^{[1
]}

机构：

[1] Dalian Maritime Univ, Inst Met Technol, Dalian 116024, Peoples R China

来源：

SURFACE & COATINGS TECHNOLOGY | 2000年 / 124卷 / 2-3期

关键词：

austenitic stainless steel; low pressure plasma arc source; plasma nitriding;

D O I：

10.1016/S0257-8972(99)00637-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of low pressure plasma are source ion nitriding experiments has been conducted on AISI 304 stainless steel at temperatures ranging from 350 to 460 degrees C in an N-2-H-2 gas mixture. The structure and composition of the plasma nitrided layers were studied by optical metallography, X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The thickness of the nitrided layer depends on the plasma nitriding temperature. After 2h of nitriding at 420 degrees C, a 12 mu m nitrogen supersaturated austenite nitrided layer with nitrogen content up to 45 at% on the surface was formed. The hardness values of the nitrided layer measured are in the range of 4.6 GPa for the sample nitrided at 350 degrees C to 12.0 GPa for the sample nitrided at about 420 degrees C. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：93 / 96

页数：4

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