Friction-induced stick-slip intensified by corrosion of gray iron brake disc

C. W. Park, M. W. Shin, Ho Jang

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The effect of brake disc corrosion on friction-induced stick-slip was studied to find the possible causes of friction instability in humid conditions. The friction and wear characteristics of gray iron discs and a commercial friction material were examined using a 1/5 scale dynamometer. Use of the corroded discs resulted in a higher friction coefficient, and a larger oscillation amplitude of the brake torque. Disc corrosion increased the critical velocity showing transition from steady sliding to stick-slip. This suggests a rapid increase of the initial static friction coefficient as a function of dwell time in a humid condition, which is supported by the increased hydrophilicity of the friction films. The contact stiffness of the friction material surface was increased after rubbing with corroded discs, due to densification of the friction films by iron oxide nanoparticles transferred from the disc surface. The wear rate of the friction material also increased with corrosion of the gray iron discs.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalWear
Volume309
Issue number1-2
DOIs
Publication statusPublished - 2014 Jan 15

Fingerprint

Stick-slip
brakes
Brakes
corrosion
slip
friction
Iron
Friction
Corrosion
iron
Friction materials
coefficient of friction
Wear of materials
dynamometers
static friction
Dynamometers
Hydrophilicity
dwell
critical velocity
Iron oxides

Keywords

  • Contact stiffness
  • Corrosion
  • Friction materials
  • Gray iron
  • Hydrophilicity
  • Stick-slip

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Mechanics of Materials

Cite this

Friction-induced stick-slip intensified by corrosion of gray iron brake disc. / Park, C. W.; Shin, M. W.; Jang, Ho.

In: Wear, Vol. 309, No. 1-2, 15.01.2014, p. 89-95.

Research output: Contribution to journalArticle

Park, C. W. ; Shin, M. W. ; Jang, Ho. / Friction-induced stick-slip intensified by corrosion of gray iron brake disc. In: Wear. 2014 ; Vol. 309, No. 1-2. pp. 89-95.
@article{dedd1eeb046643dbadfcd8bcad7a69dc,
title = "Friction-induced stick-slip intensified by corrosion of gray iron brake disc",
abstract = "The effect of brake disc corrosion on friction-induced stick-slip was studied to find the possible causes of friction instability in humid conditions. The friction and wear characteristics of gray iron discs and a commercial friction material were examined using a 1/5 scale dynamometer. Use of the corroded discs resulted in a higher friction coefficient, and a larger oscillation amplitude of the brake torque. Disc corrosion increased the critical velocity showing transition from steady sliding to stick-slip. This suggests a rapid increase of the initial static friction coefficient as a function of dwell time in a humid condition, which is supported by the increased hydrophilicity of the friction films. The contact stiffness of the friction material surface was increased after rubbing with corroded discs, due to densification of the friction films by iron oxide nanoparticles transferred from the disc surface. The wear rate of the friction material also increased with corrosion of the gray iron discs.",
keywords = "Contact stiffness, Corrosion, Friction materials, Gray iron, Hydrophilicity, Stick-slip",
author = "Park, {C. W.} and Shin, {M. W.} and Ho Jang",
year = "2014",
month = "1",
day = "15",
doi = "10.1016/j.wear.2013.11.008",
language = "English",
volume = "309",
pages = "89--95",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Friction-induced stick-slip intensified by corrosion of gray iron brake disc

AU - Park, C. W.

AU - Shin, M. W.

AU - Jang, Ho

PY - 2014/1/15

Y1 - 2014/1/15

N2 - The effect of brake disc corrosion on friction-induced stick-slip was studied to find the possible causes of friction instability in humid conditions. The friction and wear characteristics of gray iron discs and a commercial friction material were examined using a 1/5 scale dynamometer. Use of the corroded discs resulted in a higher friction coefficient, and a larger oscillation amplitude of the brake torque. Disc corrosion increased the critical velocity showing transition from steady sliding to stick-slip. This suggests a rapid increase of the initial static friction coefficient as a function of dwell time in a humid condition, which is supported by the increased hydrophilicity of the friction films. The contact stiffness of the friction material surface was increased after rubbing with corroded discs, due to densification of the friction films by iron oxide nanoparticles transferred from the disc surface. The wear rate of the friction material also increased with corrosion of the gray iron discs.

AB - The effect of brake disc corrosion on friction-induced stick-slip was studied to find the possible causes of friction instability in humid conditions. The friction and wear characteristics of gray iron discs and a commercial friction material were examined using a 1/5 scale dynamometer. Use of the corroded discs resulted in a higher friction coefficient, and a larger oscillation amplitude of the brake torque. Disc corrosion increased the critical velocity showing transition from steady sliding to stick-slip. This suggests a rapid increase of the initial static friction coefficient as a function of dwell time in a humid condition, which is supported by the increased hydrophilicity of the friction films. The contact stiffness of the friction material surface was increased after rubbing with corroded discs, due to densification of the friction films by iron oxide nanoparticles transferred from the disc surface. The wear rate of the friction material also increased with corrosion of the gray iron discs.

KW - Contact stiffness

KW - Corrosion

KW - Friction materials

KW - Gray iron

KW - Hydrophilicity

KW - Stick-slip

UR - http://www.scopus.com/inward/record.url?scp=84888769229&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888769229&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2013.11.008

DO - 10.1016/j.wear.2013.11.008

M3 - Article

AN - SCOPUS:84888769229

VL - 309

SP - 89

EP - 95

JO - Wear

JF - Wear

SN - 0043-1648

IS - 1-2

ER -