Corrosion resistance improvement of high carbon low alloy steel by plasma nitriding

被引：68

作者：

Basu, A. ^{[2
]}

Majumdar, J. Dutta ^{[1
]}

Alphonsa, J. ^{[3
]}

Mukherjee, S. ^{[3
]}

Manna, I. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

[2] Natl Inst Foundry & Forge Technol, Dept Mat & Met Engn, Ranchi 834003, Bihar, India

[3] Inst Plasma Res, FCIPT, Gandhinagar 382044, Gujarat, India

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

steel; plasma nitriding; corrosion;

D O I：

10.1016/j.matlet.2008.02.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study concerns improving the corrosion resistance of a low alloy-high carbon steel by plasma nitriding in pulsed direct current glow discharge mode at an applied voltage of 540-710 V with 3-6 A current in the temperature range 450-560 degrees C for a time period of 1-5 h. The phases formed after nitriding is mostly gamma'-Fe4N with a small volume fraction of epsilon-Fe3N/Fe(2)A Nitride volume fraction increases with nitriding time and temperature. Corrosion study reveals that plasma nitriding significantly improves the corrosion resistance in terms of corrosion potential, corrosion current density and resistance to polarization. This improvement is attributed to both formation of solid solution and nitrides on the surface. (c) 2008 Elsevier B. V. All rights reserved.

引用

页码：3117 / 3120

页数：4

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