Tribological performance of brake friction materials containing carbon nanotubes

H. J. Hwang, S. L. Jung, K. H. Cho, Y. J. Kim, Ho Jang

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

This study examined brake friction materials containing multi-wall carbon nanotubes (CNTs) to determine their effect on the braking performance. The friction materials were produced using conventional dry mixing methods by substituting barite with CNTs (1.7, 4.7, and 8.5 wt.%). Their tribological properties were examined using both a Krauss type tester and a 1/5 scale brake dynamometer. The physical and tribological properties were affected considerably by the CNT content in the friction material. In particular, the CNT-added friction materials showed improved fade resistance and friction stability. Moreover, the CNTs decreased the friction force oscillation during brake application, which was attributed to the increased damping capacity of the friction materials. However, the CNTs decreased the friction effectiveness owing to the lubricating nature of undispersed CNT bundles, and decreased the thermal conductivity of the friction material due to interfacial coupling effects.

Original languageEnglish
Pages (from-to)519-525
Number of pages7
JournalWear
Volume268
Issue number2-3
DOIs
Publication statusPublished - 2010 Feb 4

Fingerprint

Friction materials
Carbon Nanotubes
brakes
Brakes
Carbon nanotubes
friction
carbon nanotubes
Friction
Braking performance
Barium Sulfate
Barite
Dynamometers
dynamometers
barite
braking
Thermal conductivity
test equipment
Damping
bundles
thermal conductivity

Keywords

  • Barite
  • Carbon nanotube
  • Composite
  • Damping
  • Friction coefficient
  • Friction materials

ASJC Scopus subject areas

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

Cite this

Tribological performance of brake friction materials containing carbon nanotubes. / Hwang, H. J.; Jung, S. L.; Cho, K. H.; Kim, Y. J.; Jang, Ho.

In: Wear, Vol. 268, No. 2-3, 04.02.2010, p. 519-525.

Research output: Contribution to journalArticle

Hwang, H. J. ; Jung, S. L. ; Cho, K. H. ; Kim, Y. J. ; Jang, Ho. / Tribological performance of brake friction materials containing carbon nanotubes. In: Wear. 2010 ; Vol. 268, No. 2-3. pp. 519-525.
@article{db21f0c543d3475d92c95715a634f99d,
title = "Tribological performance of brake friction materials containing carbon nanotubes",
abstract = "This study examined brake friction materials containing multi-wall carbon nanotubes (CNTs) to determine their effect on the braking performance. The friction materials were produced using conventional dry mixing methods by substituting barite with CNTs (1.7, 4.7, and 8.5 wt.{\%}). Their tribological properties were examined using both a Krauss type tester and a 1/5 scale brake dynamometer. The physical and tribological properties were affected considerably by the CNT content in the friction material. In particular, the CNT-added friction materials showed improved fade resistance and friction stability. Moreover, the CNTs decreased the friction force oscillation during brake application, which was attributed to the increased damping capacity of the friction materials. However, the CNTs decreased the friction effectiveness owing to the lubricating nature of undispersed CNT bundles, and decreased the thermal conductivity of the friction material due to interfacial coupling effects.",
keywords = "Barite, Carbon nanotube, Composite, Damping, Friction coefficient, Friction materials",
author = "Hwang, {H. J.} and Jung, {S. L.} and Cho, {K. H.} and Kim, {Y. J.} and Ho Jang",
year = "2010",
month = "2",
day = "4",
doi = "10.1016/j.wear.2009.09.003",
language = "English",
volume = "268",
pages = "519--525",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",
number = "2-3",

}

TY - JOUR

T1 - Tribological performance of brake friction materials containing carbon nanotubes

AU - Hwang, H. J.

AU - Jung, S. L.

AU - Cho, K. H.

AU - Kim, Y. J.

AU - Jang, Ho

PY - 2010/2/4

Y1 - 2010/2/4

N2 - This study examined brake friction materials containing multi-wall carbon nanotubes (CNTs) to determine their effect on the braking performance. The friction materials were produced using conventional dry mixing methods by substituting barite with CNTs (1.7, 4.7, and 8.5 wt.%). Their tribological properties were examined using both a Krauss type tester and a 1/5 scale brake dynamometer. The physical and tribological properties were affected considerably by the CNT content in the friction material. In particular, the CNT-added friction materials showed improved fade resistance and friction stability. Moreover, the CNTs decreased the friction force oscillation during brake application, which was attributed to the increased damping capacity of the friction materials. However, the CNTs decreased the friction effectiveness owing to the lubricating nature of undispersed CNT bundles, and decreased the thermal conductivity of the friction material due to interfacial coupling effects.

AB - This study examined brake friction materials containing multi-wall carbon nanotubes (CNTs) to determine their effect on the braking performance. The friction materials were produced using conventional dry mixing methods by substituting barite with CNTs (1.7, 4.7, and 8.5 wt.%). Their tribological properties were examined using both a Krauss type tester and a 1/5 scale brake dynamometer. The physical and tribological properties were affected considerably by the CNT content in the friction material. In particular, the CNT-added friction materials showed improved fade resistance and friction stability. Moreover, the CNTs decreased the friction force oscillation during brake application, which was attributed to the increased damping capacity of the friction materials. However, the CNTs decreased the friction effectiveness owing to the lubricating nature of undispersed CNT bundles, and decreased the thermal conductivity of the friction material due to interfacial coupling effects.

KW - Barite

KW - Carbon nanotube

KW - Composite

KW - Damping

KW - Friction coefficient

KW - Friction materials

UR - http://www.scopus.com/inward/record.url?scp=73449106769&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=73449106769&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2009.09.003

DO - 10.1016/j.wear.2009.09.003

M3 - Article

AN - SCOPUS:73449106769

VL - 268

SP - 519

EP - 525

JO - Wear

JF - Wear

SN - 0043-1648

IS - 2-3

ER -