High temperature solution-nitriding and low-temperature nitriding of AISI 316: Effect on pitting potential and crevice corrosion performance

被引：44

作者：

Bottoli, Federico ^{[1
]}

Jellesen, Morten S. ^{[1
]}

Christiansen, Thomas L. ^{[1
]}

Winther, Grethe ^{[1
]}

Somers, Marcel A. J. ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Mech Engn, Produkt Storvet B 425, DK-2800 Lyngby, Denmark

来源：

APPLIED SURFACE SCIENCE | 2018年 / 431卷

关键词：

High nitrogen steel; Low-temperature nitriding; Expanded austenite; High-temperature solution nitriding; Corrosion; Pitting; Crevice corrosion; AUSTENITIC STAINLESS-STEEL; HIGH-NITROGEN STEELS; EXPANDED AUSTENITE; INITIAL OXIDATION; PASSIVE FILMS; RESISTANCE; ALLOYS; WEAR; EPSILON-FE2N1-X; IMPROVEMENT;

D O I：

10.1016/j.apsusc.2017.06.094

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Stainless steels grade AISI 316 was subjected to high temperature solution nitriding and low-temperature nitriding in order to dissolve various amounts of nitrogen in the bulk (up to approx. 0.45 wt%) and in a surface layer (up to approx. 13 wt%), respectively. Potentiodynamic polarization tests in a 0.1 M NaCl solution and crevice corrosion immersion tests in 3 wt% FeCl3 solution were studied before and after the bulk and surface treatments. Nitrogen addition in the bulk proved to have a beneficial effect on the pitting resistance of the alloy. The formation of a zone of expanded austenite at the material surface through low-temperature nitriding resulted in a considerable improvement of the pitting potential and the crevice corrosion performance of the steels. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：24 / 31

页数：8

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