Root cause study of corrosion stiction by brake pads on the grey iron disc

Jaehyun Gweon; Jongsung Park; Wan Kyu Lee; Doo Yeon Kim; Ho Jang

doi:10.1016/j.engfailanal.2021.105583

Root cause study of corrosion stiction by brake pads on the grey iron disc

Jaehyun Gweon, Jongsung Park, Wan Kyu Lee, Doo Yeon Kim, Ho Jang

Department of Materials Science and Engineering

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

4 Citations (Scopus)

Abstract

Corrosion stiction at the sliding interface of a brake system was investigated to identify its leading cause and countermeasure. Porosity, acidity, hydrophobicity, strength, contact stiffness, and contact area of commercial brake pads were examined to find the correlation with corrosion stiction. Results showed that the compliant brake pads with low cohesive strength showed high stiction forces owing to the larger contact area after brake applications than stiff pads. Electrochemical analysis of the corroded interface supports the contact area dependency of the stiction force, suggesting that corrosion stiction can be reduced by minimizing the contacts on the brake pad surface.

Original language	English
Article number	105583
Journal	Engineering Failure Analysis
Volume	128
DOIs	https://doi.org/10.1016/j.engfailanal.2021.105583
Publication status	Published - 2021 Oct

Keywords

Friction material
Graphitic corrosion
Interface
Rust

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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10.1016/j.engfailanal.2021.105583

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title = "Root cause study of corrosion stiction by brake pads on the grey iron disc",

abstract = "Corrosion stiction at the sliding interface of a brake system was investigated to identify its leading cause and countermeasure. Porosity, acidity, hydrophobicity, strength, contact stiffness, and contact area of commercial brake pads were examined to find the correlation with corrosion stiction. Results showed that the compliant brake pads with low cohesive strength showed high stiction forces owing to the larger contact area after brake applications than stiff pads. Electrochemical analysis of the corroded interface supports the contact area dependency of the stiction force, suggesting that corrosion stiction can be reduced by minimizing the contacts on the brake pad surface.",

keywords = "Friction material, Graphitic corrosion, Interface, Rust",

author = "Jaehyun Gweon and Jongsung Park and Lee, {Wan Kyu} and Kim, {Doo Yeon} and Ho Jang",

note = "Funding Information: This study was financially supported by Hyundai Mobis Co. Ltd. Publisher Copyright: {\textcopyright} 2021",

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AU - Gweon, Jaehyun

AU - Park, Jongsung

AU - Lee, Wan Kyu

AU - Kim, Doo Yeon

AU - Jang, Ho

PY - 2021/10

Y1 - 2021/10

N2 - Corrosion stiction at the sliding interface of a brake system was investigated to identify its leading cause and countermeasure. Porosity, acidity, hydrophobicity, strength, contact stiffness, and contact area of commercial brake pads were examined to find the correlation with corrosion stiction. Results showed that the compliant brake pads with low cohesive strength showed high stiction forces owing to the larger contact area after brake applications than stiff pads. Electrochemical analysis of the corroded interface supports the contact area dependency of the stiction force, suggesting that corrosion stiction can be reduced by minimizing the contacts on the brake pad surface.

AB - Corrosion stiction at the sliding interface of a brake system was investigated to identify its leading cause and countermeasure. Porosity, acidity, hydrophobicity, strength, contact stiffness, and contact area of commercial brake pads were examined to find the correlation with corrosion stiction. Results showed that the compliant brake pads with low cohesive strength showed high stiction forces owing to the larger contact area after brake applications than stiff pads. Electrochemical analysis of the corroded interface supports the contact area dependency of the stiction force, suggesting that corrosion stiction can be reduced by minimizing the contacts on the brake pad surface.

KW - Friction material

KW - Graphitic corrosion

KW - Interface

KW - Rust

UR - http://www.scopus.com/inward/record.url?scp=85109619901&partnerID=8YFLogxK

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M3 - Article

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SN - 1350-6307

VL - 128

JO - Engineering Failure Analysis

JF - Engineering Failure Analysis

M1 - 105583

ER -

Root cause study of corrosion stiction by brake pads on the grey iron disc

Abstract

Keywords

ASJC Scopus subject areas

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