Improving the corrosion behaviour of powder metallurgical 316L alloy by prepassivation in 20% nitric acid

被引：15

作者：

Kargar, B. Shahabi ^{[1
]}

Moayed, M. H. ^{[1
]}

Babakhani, A. ^{[1
]}

Davoodi, A. ^{[2
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Met & Mat Engn, Mashhad 917751111, Iran

[2] Sabzevar Tarbiat Moallem Univ, Dept Mat Engn, Sabzevar 391, Iran

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 01期

关键词：

Stainless steel; Polarisation; Potentiostatic; Crevice corrosion; Passivity; AUSTENITIC STAINLESS-STEELS; NITROGEN-HYDROGEN ATMOSPHERE; AISI; 304L; RESISTANCE; ENVIRONMENTS;

D O I：

10.1016/j.corsci.2010.09.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrochemical improvement of PM 316L stainless steels by pre-alloyed powder prepassivation in 20% nitric acid in comparison with as-received specimens has been studied in this work For comparison purposes a simultaneous study was carried out on similar composition wrought AISI 316L steels Corrosion resistance was studied using evolution of the corrosion potential vs time anodic polarisations curves and Zero Resistance Ammeter technique Reductions of the corrosion rate (i(corr)) were observed in prepassivated specimens in neutral chloride media Crevice resistance was higher for prepassivated specimens and for higher densities and annealing as post-heat treatments (C) 2010 Elsevier Ltd All rights reserved

引用

页码：135 / 146

页数：12

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