Effect of pH on pitting corrosion of stainless steel welds in alkaline salt water

L. Li; C. F. Dong; K. Xiao; J. Z. Yao; X. G. Li

doi:10.1016/j.conbuildmat.2014.06.090

Effect of pH on pitting corrosion of stainless steel welds in alkaline salt water

L. Li
, C. F. Dong^*
, K. Xiao
, J. Z. Yao
, X. G. Li

^*Corresponding author for this work

University of Science and Technology Beijing
Key Laboratory for Corrosion and Protection (MOE)

Research output: Contribution to journal › Article › peer-review

52 Scopus citations

Abstract

Pitting corrosion was studied in the weldment of 304L austenitic stainless steels joint with 308L austenitic stainless steels. The corrosion behavior of three different weldment zones (weld metal (WM), base metal (BM) and heat affected zone (HAZ)) in alkaline solutions with NaCl was characterized by a series of electrochemical tests. The results indicated that pH values played an important role in the corrosion behavior of the weldment. With the pH increasing, the film resistance, polarization resistance and E_corr increases, the charge carrier density N and the site of the pitting on the weldment decreases. In addition, WM showed a better corrosion resistance, followed by HAZ and BM. The pittings in BM were much bigger than that in WM and HAZ.

Original language	English
Pages (from-to)	709-715
Number of pages	7
Journal	Construction and Building Materials
Volume	68
DOIs	https://doi.org/10.1016/j.conbuildmat.2014.06.090
State	Published - 15 Oct 2014
Externally published	Yes

Keywords

EIS
Pitting corrosion
Polarization
Stainless steel
Welding

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10.1016/j.conbuildmat.2014.06.090

Cite this

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title = "Effect of pH on pitting corrosion of stainless steel welds in alkaline salt water",

abstract = "Pitting corrosion was studied in the weldment of 304L austenitic stainless steels joint with 308L austenitic stainless steels. The corrosion behavior of three different weldment zones (weld metal (WM), base metal (BM) and heat affected zone (HAZ)) in alkaline solutions with NaCl was characterized by a series of electrochemical tests. The results indicated that pH values played an important role in the corrosion behavior of the weldment. With the pH increasing, the film resistance, polarization resistance and Ecorr increases, the charge carrier density N and the site of the pitting on the weldment decreases. In addition, WM showed a better corrosion resistance, followed by HAZ and BM. The pittings in BM were much bigger than that in WM and HAZ.",

keywords = "EIS, Pitting corrosion, Polarization, Stainless steel, Welding",

author = "L. Li and Dong, \{C. F.\} and K. Xiao and Yao, \{J. Z.\} and Li, \{X. G.\}",

year = "2014",

month = oct,

day = "15",

doi = "10.1016/j.conbuildmat.2014.06.090",

language = "英语",

volume = "68",

pages = "709--715",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Effect of pH on pitting corrosion of stainless steel welds in alkaline salt water

AU - Li, L.

AU - Dong, C. F.

AU - Xiao, K.

AU - Yao, J. Z.

AU - Li, X. G.

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Pitting corrosion was studied in the weldment of 304L austenitic stainless steels joint with 308L austenitic stainless steels. The corrosion behavior of three different weldment zones (weld metal (WM), base metal (BM) and heat affected zone (HAZ)) in alkaline solutions with NaCl was characterized by a series of electrochemical tests. The results indicated that pH values played an important role in the corrosion behavior of the weldment. With the pH increasing, the film resistance, polarization resistance and Ecorr increases, the charge carrier density N and the site of the pitting on the weldment decreases. In addition, WM showed a better corrosion resistance, followed by HAZ and BM. The pittings in BM were much bigger than that in WM and HAZ.

AB - Pitting corrosion was studied in the weldment of 304L austenitic stainless steels joint with 308L austenitic stainless steels. The corrosion behavior of three different weldment zones (weld metal (WM), base metal (BM) and heat affected zone (HAZ)) in alkaline solutions with NaCl was characterized by a series of electrochemical tests. The results indicated that pH values played an important role in the corrosion behavior of the weldment. With the pH increasing, the film resistance, polarization resistance and Ecorr increases, the charge carrier density N and the site of the pitting on the weldment decreases. In addition, WM showed a better corrosion resistance, followed by HAZ and BM. The pittings in BM were much bigger than that in WM and HAZ.

KW - EIS

KW - Pitting corrosion

KW - Polarization

KW - Stainless steel

KW - Welding

UR - https://www.scopus.com/pages/publications/84905158979

U2 - 10.1016/j.conbuildmat.2014.06.090

DO - 10.1016/j.conbuildmat.2014.06.090

M3 - 文章

AN - SCOPUS:84905158979

SN - 0950-0618

VL - 68

SP - 709

EP - 715

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Effect of pH on pitting corrosion of stainless steel welds in alkaline salt water

Abstract

Keywords

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