Corrosion behavior of low alloy steels containing Cr, Co and W in synthetic potable water

Yoon Seok Choi; Jae Joo Shim; Jung Gu Kim

doi:10.1016/j.msea.2004.06.024

Corrosion behavior of low alloy steels containing Cr, Co and W in synthetic potable water

Yoon Seok Choi
, Jae Joo Shim
, Jung Gu Kim

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

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

54 Scopus citations

Abstract

The corrosion behavior of new alloy steels was investigated using potentiodynamic (PD) tests, electrochemical impedance spectroscopy (EIS) and galvanostatic test in synthetic potable water. PD test results showed that all specimens exhibited active corrosion behavior, and corrosion rate tended to decrease as a result of adding alloying elements. The EIS measurements were taken to determine the polarization resistance (R_P) of the rust layer. The R_P values of the new alloy steel were much larger than that of carbon steel. Furthermore, more alloying elements led to a remarkable increase in the R_P values. The chemical state of alloying elements (Cr, Co and W) in the rust layer of new alloy steels was analyzed by electron probe microanalysis (EPMA) and X-ray photoelectron spectroscopy (XPS). EPMA and XPS results showed that alloying elements existed in protective compounds in the rust layer. Corrosion of the new alloy steels was suppressed by insoluble compound formed near the surface.

Original language	English
Pages (from-to)	148-156
Number of pages	9
Journal	Materials Science and Engineering: A
Volume	385
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2004.06.024
State	Published - 15 Nov 2004

Keywords

Alloying element
Carbon steel
Corrosion behavior
Electrochemical impedance spectroscopy
Rust layer
Synthetic potable water

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.msea.2004.06.024

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title = "Corrosion behavior of low alloy steels containing Cr, Co and W in synthetic potable water",

abstract = "The corrosion behavior of new alloy steels was investigated using potentiodynamic (PD) tests, electrochemical impedance spectroscopy (EIS) and galvanostatic test in synthetic potable water. PD test results showed that all specimens exhibited active corrosion behavior, and corrosion rate tended to decrease as a result of adding alloying elements. The EIS measurements were taken to determine the polarization resistance (RP) of the rust layer. The RP values of the new alloy steel were much larger than that of carbon steel. Furthermore, more alloying elements led to a remarkable increase in the RP values. The chemical state of alloying elements (Cr, Co and W) in the rust layer of new alloy steels was analyzed by electron probe microanalysis (EPMA) and X-ray photoelectron spectroscopy (XPS). EPMA and XPS results showed that alloying elements existed in protective compounds in the rust layer. Corrosion of the new alloy steels was suppressed by insoluble compound formed near the surface.",

keywords = "Alloying element, Carbon steel, Corrosion behavior, Electrochemical impedance spectroscopy, Rust layer, Synthetic potable water",

author = "Choi, \{Yoon Seok\} and Shim, \{Jae Joo\} and Kim, \{Jung Gu\}",

year = "2004",

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doi = "10.1016/j.msea.2004.06.024",

language = "English",

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journal = "Materials Science and Engineering: A",

issn = "0921-5093",

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T1 - Corrosion behavior of low alloy steels containing Cr, Co and W in synthetic potable water

AU - Choi, Yoon Seok

AU - Shim, Jae Joo

AU - Kim, Jung Gu

PY - 2004/11/15

Y1 - 2004/11/15

N2 - The corrosion behavior of new alloy steels was investigated using potentiodynamic (PD) tests, electrochemical impedance spectroscopy (EIS) and galvanostatic test in synthetic potable water. PD test results showed that all specimens exhibited active corrosion behavior, and corrosion rate tended to decrease as a result of adding alloying elements. The EIS measurements were taken to determine the polarization resistance (RP) of the rust layer. The RP values of the new alloy steel were much larger than that of carbon steel. Furthermore, more alloying elements led to a remarkable increase in the RP values. The chemical state of alloying elements (Cr, Co and W) in the rust layer of new alloy steels was analyzed by electron probe microanalysis (EPMA) and X-ray photoelectron spectroscopy (XPS). EPMA and XPS results showed that alloying elements existed in protective compounds in the rust layer. Corrosion of the new alloy steels was suppressed by insoluble compound formed near the surface.

AB - The corrosion behavior of new alloy steels was investigated using potentiodynamic (PD) tests, electrochemical impedance spectroscopy (EIS) and galvanostatic test in synthetic potable water. PD test results showed that all specimens exhibited active corrosion behavior, and corrosion rate tended to decrease as a result of adding alloying elements. The EIS measurements were taken to determine the polarization resistance (RP) of the rust layer. The RP values of the new alloy steel were much larger than that of carbon steel. Furthermore, more alloying elements led to a remarkable increase in the RP values. The chemical state of alloying elements (Cr, Co and W) in the rust layer of new alloy steels was analyzed by electron probe microanalysis (EPMA) and X-ray photoelectron spectroscopy (XPS). EPMA and XPS results showed that alloying elements existed in protective compounds in the rust layer. Corrosion of the new alloy steels was suppressed by insoluble compound formed near the surface.

KW - Alloying element

KW - Carbon steel

KW - Corrosion behavior

KW - Electrochemical impedance spectroscopy

KW - Rust layer

KW - Synthetic potable water

UR - https://www.scopus.com/pages/publications/7244234456

U2 - 10.1016/j.msea.2004.06.024

DO - 10.1016/j.msea.2004.06.024

M3 - Article

AN - SCOPUS:7244234456

SN - 0921-5093

VL - 385

SP - 148

EP - 156

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Corrosion behavior of low alloy steels containing Cr, Co and W in synthetic potable water

Abstract

Keywords

UN SDGs

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