Effect of L-Cysteine on Micro-Galvanic Corrosion of ADC12 Aluminum Alloy in a Low-Conductivity Coolant for Electric Vehicles

Woo Hyuk Lee; Myeong Cheol Kim; Geon Il Kim; Ju Seung Song; Jung Gu Kim

doi:10.1149/1945-7111/ad2c3a

Effect of L-Cysteine on Micro-Galvanic Corrosion of ADC12 Aluminum Alloy in a Low-Conductivity Coolant for Electric Vehicles

Woo Hyuk Lee
, Myeong Cheol Kim
, Geon Il Kim
, Ju Seung Song
, Jung Gu Kim

Department of Advanced Materials Science and Engineering

Sungkyunkwan University
Hyundai Motor Group

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

Abstract

L-cysteine as a corrosion inhibitor for ADC12 aluminum alloy in a modified coolant solution was investigated. Results reveal its effectiveness as a cathodic inhibitor, suppressing the oxygen reduction reaction. Immersion tests show efficient inhibition of localized corrosion at an optimized L-cysteine concentration of 1.0 mM. A favorable L-cysteine adsorption on θ-Al₂Cu is confirmed, enhancing hydrophobicity, and leading to corrosion inhibition. This study proposes a tentative corrosion inhibition mechanism.

Original language	English
Article number	031504
Journal	Journal of the Electrochemical Society
Volume	171
Issue number	3
DOIs	https://doi.org/10.1149/1945-7111/ad2c3a
State	Published - 31 Mar 2024

Keywords

ADC12 aluminum alloy
corrosion inhibitors
galvanic corrosion
localized corrosion

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10.1149/1945-7111/ad2c3a

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title = "Effect of L-Cysteine on Micro-Galvanic Corrosion of ADC12 Aluminum Alloy in a Low-Conductivity Coolant for Electric Vehicles",

abstract = "L-cysteine as a corrosion inhibitor for ADC12 aluminum alloy in a modified coolant solution was investigated. Results reveal its effectiveness as a cathodic inhibitor, suppressing the oxygen reduction reaction. Immersion tests show efficient inhibition of localized corrosion at an optimized L-cysteine concentration of 1.0 mM. A favorable L-cysteine adsorption on θ-Al2Cu is confirmed, enhancing hydrophobicity, and leading to corrosion inhibition. This study proposes a tentative corrosion inhibition mechanism.",

keywords = "ADC12 aluminum alloy, corrosion inhibitors, galvanic corrosion, localized corrosion",

author = "Lee, \{Woo Hyuk\} and Kim, \{Myeong Cheol\} and Kim, \{Geon Il\} and Song, \{Ju Seung\} and Kim, \{Jung Gu\}",

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AU - Lee, Woo Hyuk

AU - Kim, Myeong Cheol

AU - Kim, Geon Il

AU - Song, Ju Seung

AU - Kim, Jung Gu

PY - 2024/3/31

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N2 - L-cysteine as a corrosion inhibitor for ADC12 aluminum alloy in a modified coolant solution was investigated. Results reveal its effectiveness as a cathodic inhibitor, suppressing the oxygen reduction reaction. Immersion tests show efficient inhibition of localized corrosion at an optimized L-cysteine concentration of 1.0 mM. A favorable L-cysteine adsorption on θ-Al2Cu is confirmed, enhancing hydrophobicity, and leading to corrosion inhibition. This study proposes a tentative corrosion inhibition mechanism.

AB - L-cysteine as a corrosion inhibitor for ADC12 aluminum alloy in a modified coolant solution was investigated. Results reveal its effectiveness as a cathodic inhibitor, suppressing the oxygen reduction reaction. Immersion tests show efficient inhibition of localized corrosion at an optimized L-cysteine concentration of 1.0 mM. A favorable L-cysteine adsorption on θ-Al2Cu is confirmed, enhancing hydrophobicity, and leading to corrosion inhibition. This study proposes a tentative corrosion inhibition mechanism.

KW - ADC12 aluminum alloy

KW - corrosion inhibitors

KW - galvanic corrosion

KW - localized corrosion

UR - https://www.scopus.com/pages/publications/85188053263

U2 - 10.1149/1945-7111/ad2c3a

DO - 10.1149/1945-7111/ad2c3a

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IS - 3

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ER -

Effect of L-Cysteine on Micro-Galvanic Corrosion of ADC12 Aluminum Alloy in a Low-Conductivity Coolant for Electric Vehicles

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