Effects of antimony trisulfide (Sb2S3) on sliding friction of automotive brake friction materials

Wan Kyu Lee, Tae Hee Rhee, Hyun Seong Kim, Ho Jang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The effect of antimony trisulfide (Sb2S3) on the tribological properties of automotive brake friction materials was investigated using a Krauss type tribometer and a 1/5 scale dynamometer with a rigid caliper. Results showed that Sb2S3 improved fade resistance by developing transfer films on the disc surface at elevated temperatures. On the other hand, the rubbing surfaces of the friction material exhibited contact plateaus with a broader height distribution when it contained Sb 2S3, indicating fewer contact junctions compared to the friction material with graphite. The friction material with Sb2S 3 also exhibited a lower stick-slip propensity than the friction material with graphite. The improved fade resistance with Sb2S 3 is attributed to its lubricating capability sustained at high temperatures, while the lower stick-slip propensity of the friction material with Sb2S3 is associated with the slight difference between its static and kinetic coefficients of friction and high normal stiffness.

Original languageEnglish
Pages (from-to)1101-1107
Number of pages7
JournalMetals and Materials International
Volume19
Issue number5
DOIs
Publication statusPublished - 2013 Sep

Keywords

  • composites
  • powder processing
  • scanning electron microscopy
  • surface
  • tribological property

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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