Microstructure and tribological properties of PIP-SiC modified C/C–SiC brake materials

Haodong Sun, Shangwu Fan, Le Wang, Xu Ma, Juanli Deng, Laifei Cheng, Litong Zhang

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A combination method of precursor infiltration and pyrolysis (PIP), chemical vapor infiltration (CVI) and liquid silicon infiltration (LSI) was proposed to prepare PIP-SiC modified C/C–SiC brake materials. The SiC ceramic matrix pyrolyzed by polymethysilane (PMS) homogeneously dispersed in the fiber bundles region, which improved the plough resistance of local C/C region and the wear resistance of C/C–SiC brake materials. When the braking speed rises to 28 m/s, the fluctuation range of friction coefficient was limited to 0.026. The linear wear rate of the as-prepared composites was could be ~50% less than that of C/C–SiC, when the braking speed was above 15 m/s (for instance, the wear rate of 1.02 μm/(side·cycle) at 28 m/s less than 2.02 μm/(side·cycle) of traditional C/C– SiC). The fading ratio D of CoF under wet conditions was ~11%. The results showed that introducing PIP-SiC could stabilize the braking process and effectively prolong the service life of C/C–SiC brake materials.

Original languageEnglish
Pages (from-to)15568-15579
Number of pages12
JournalCeramics International
Volume47
Issue number11
DOIs
StatePublished - 1 Jun 2021

Keywords

  • C/C–SiC
  • Friction
  • Precursor infiltration and pyrolysis
  • Wear

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