Investigation of AISI 1040 steel corrosion H2S solution containing chloride ions by digital image processing coupled with in electrochemical techniques

被引：44

作者：

Zimer, Alexsandro Mendes ^{[1
]}

Rios, Emerson Costa ^{[1
]}

Dias Mendes, Paulo de Carvalho ^{[1
]}

Goncalves, Wesley Nunes ^{[2
]}

Bruno, Odemir Martinez ^{[2
]}

Pereira, Ernesto Chaves ^{[1
]}

Mascaro, Lucia Helena ^{[1
]}

机构：

[1] Univ Fed Sao Carlos UFSCar, Dept Chem, LIEC, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Sao Paulo, IFSC, Depto Fis, BR-13560970 Sao Carlos, SP, Brazil

来源：

CORROSION SCIENCE | 2011年 / 53卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

Sulfidation; Steel; Selective oxidation; Intergranular corrosion; Repassivation; PITTING CORROSION; CARBON-STEEL; HYDROGEN-SULFIDE; STAINLESS-STEEL; IRON; BEHAVIOR;

D O I：

10.1016/j.corsci.2011.05.064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a study of AISI 1040 steel corrosion in aqueous electrolyte of acetic acid buffer containing 3.1 and 31 x 10(-3) mol dm(-3) of Na2S in both the presence and absence of 3.5 wt.% NaCl. This investigation of steel corrosion was carried out using potential polarization, and open-circuit and in situ optical microscopy. The morphological analysis and classification of types of surface corrosion damage by digital image processing reveals grain boundary corrosion and shows a non-uniform sulfide film growth, which occurs preferentially over pearlitic grains through successive formation and dissolution of the film. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：3193 / 3201

页数：9

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