The effect of metal fibers on the friction performance of automotive brake friction materials

Ho Jang, K. Ko, S. J. Kim, R. H. Basch, J. W. Fash

Research output: Contribution to journalArticle

175 Citations (Scopus)

Abstract

This study investigates the effect of different metallic fibers upon friction and wear performance of various brake friction couples. Based on a simple experimental formulation, friction materials with different metal fibers (Cu, steel, or Al) were fabricated and then evaluated using a small-scale friction tester. Two different counter disks (gray cast iron and aluminum metal matrix composite (Al-MMC)) were employed for friction tests. The friction tests were carried out at two different temperature ranges: ambient and elevated temperatures. Results from ambient temperature tests revealed that the friction materials with Cu fibers showed a pronounced negative μ -ν (friction coefficient versus sliding velocity) relation when the friction material was rubbed against gray cast iron disks, implying that stick-slip may occur at low speeds. The negative μ -ν relation was not observed when the friction material with Cu fibers was rubbed against the Al-MMC counter surface. On the other hand, elevated temperature tests showed that the friction material with Cu fibers exhibited better fade resistance than the others. The test results also showed that the friction material with steel fibers was not compatible with Al-MMC disks due to severe material transfer and erratic friction behavior during sliding at elevated temperatures.

Original languageEnglish
Pages (from-to)406-414
Number of pages9
JournalWear
Volume256
Issue number3-4
DOIs
Publication statusPublished - 2004 Feb 1

Fingerprint

metal fibers
Friction materials
brakes
Brakes
friction
Metals
Friction
Fibers
Aluminum
metal matrix composites
Cast iron
fibers
Composite materials
Temperature
Stick-slip
Steel fibers
aluminum
Steel
ambient temperature
sliding

Keywords

  • Aluminum metal matrix composite (Al-MMC)
  • Brake friction material
  • Gray cast iron
  • Metal fiber
  • Sliding

ASJC Scopus subject areas

  • Engineering(all)
  • Mechanical Engineering
  • Surfaces, Coatings and Films

Cite this

The effect of metal fibers on the friction performance of automotive brake friction materials. / Jang, Ho; Ko, K.; Kim, S. J.; Basch, R. H.; Fash, J. W.

In: Wear, Vol. 256, No. 3-4, 01.02.2004, p. 406-414.

Research output: Contribution to journalArticle

Jang, Ho ; Ko, K. ; Kim, S. J. ; Basch, R. H. ; Fash, J. W. / The effect of metal fibers on the friction performance of automotive brake friction materials. In: Wear. 2004 ; Vol. 256, No. 3-4. pp. 406-414.
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