Metals and Materials International

, Volume 19, Issue 5, pp 1101–1107 | Cite as

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

  • Wan Kyu Lee
  • Tae Hee Rhee
  • Hyun Seong Kim
  • Ho Jang
Article
First Online:
Received:
Accepted:

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 Sb2S3, indicating fewer contact junctions compared to the friction material with graphite. The friction material with Sb2S3 also exhibited a lower stick-slip propensity than the friction material with graphite. The improved fade resistance with Sb2S3 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.

Key words

composites powder processing surface scanning electron microscopy tribological property 
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Copyright information

© The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Wan Kyu Lee
    • 1
  • Tae Hee Rhee
    • 1
  • Hyun Seong Kim
    • 1
  • Ho Jang
    • 1
  1. 1.Department of Materials Science and EngineeringKorea UniversitySeoulSouth Korea

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