Effect of chromium on the corrosion behavior of low alloy steel in sulfuric acid

Sun Ah Park; Seung Hwan Lee; Jung Gu Kim

doi:10.1007/s12540-012-6009-0

Effect of chromium on the corrosion behavior of low alloy steel in sulfuric acid

Sun Ah Park
, Seung Hwan Lee
, Jung Gu Kim

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

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

38 Scopus citations

Abstract

The effects of a chromium (Cr) addition on the corrosion resistance of low alloy steel used in flue gas desulfurization systems were examined by electrochemical (potentiodynamic polarization tests, linear polarization measurements and electrochemical impedance spectroscopy) and weight loss measurements in a 10 wt% H₂SO₄ solution at room temperature. All measurements revealed a decrease in corrosion rate with increasing Cr content. SEM, EPMA and XPS examinations of the corroded surfaces after the immersion test indicated that 0.6% Cr addition decreased corrosion damage to the steels because protective Cr oxides formed in all the rust layers and Fe oxides dominated over Fe sulphate compounds in the inner rust layers.

Original language	English
Pages (from-to)	975-987
Number of pages	13
Journal	Metals and Materials International
Volume	18
Issue number	6
DOIs	https://doi.org/10.1007/s12540-012-6009-0
State	Published - Dec 2012

Keywords

alloys
corrosion
electrochemistry
rolling
scanning electron microscopy (SEM)

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10.1007/s12540-012-6009-0

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title = "Effect of chromium on the corrosion behavior of low alloy steel in sulfuric acid",

abstract = "The effects of a chromium (Cr) addition on the corrosion resistance of low alloy steel used in flue gas desulfurization systems were examined by electrochemical (potentiodynamic polarization tests, linear polarization measurements and electrochemical impedance spectroscopy) and weight loss measurements in a 10 wt\% H2SO4 solution at room temperature. All measurements revealed a decrease in corrosion rate with increasing Cr content. SEM, EPMA and XPS examinations of the corroded surfaces after the immersion test indicated that 0.6\% Cr addition decreased corrosion damage to the steels because protective Cr oxides formed in all the rust layers and Fe oxides dominated over Fe sulphate compounds in the inner rust layers.",

keywords = "alloys, corrosion, electrochemistry, rolling, scanning electron microscopy (SEM)",

author = "Park, \{Sun Ah\} and Lee, \{Seung Hwan\} and Kim, \{Jung Gu\}",

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AU - Park, Sun Ah

AU - Lee, Seung Hwan

AU - Kim, Jung Gu

PY - 2012/12

Y1 - 2012/12

N2 - The effects of a chromium (Cr) addition on the corrosion resistance of low alloy steel used in flue gas desulfurization systems were examined by electrochemical (potentiodynamic polarization tests, linear polarization measurements and electrochemical impedance spectroscopy) and weight loss measurements in a 10 wt% H2SO4 solution at room temperature. All measurements revealed a decrease in corrosion rate with increasing Cr content. SEM, EPMA and XPS examinations of the corroded surfaces after the immersion test indicated that 0.6% Cr addition decreased corrosion damage to the steels because protective Cr oxides formed in all the rust layers and Fe oxides dominated over Fe sulphate compounds in the inner rust layers.

AB - The effects of a chromium (Cr) addition on the corrosion resistance of low alloy steel used in flue gas desulfurization systems were examined by electrochemical (potentiodynamic polarization tests, linear polarization measurements and electrochemical impedance spectroscopy) and weight loss measurements in a 10 wt% H2SO4 solution at room temperature. All measurements revealed a decrease in corrosion rate with increasing Cr content. SEM, EPMA and XPS examinations of the corroded surfaces after the immersion test indicated that 0.6% Cr addition decreased corrosion damage to the steels because protective Cr oxides formed in all the rust layers and Fe oxides dominated over Fe sulphate compounds in the inner rust layers.

KW - alloys

KW - corrosion

KW - electrochemistry

KW - rolling

KW - scanning electron microscopy (SEM)

UR - https://www.scopus.com/pages/publications/84879625278

U2 - 10.1007/s12540-012-6009-0

DO - 10.1007/s12540-012-6009-0

M3 - Article

AN - SCOPUS:84879625278

SN - 1598-9623

VL - 18

SP - 975

EP - 987

JO - Metals and Materials International

JF - Metals and Materials International

IS - 6

ER -

Effect of chromium on the corrosion behavior of low alloy steel in sulfuric acid

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Keywords

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