Microstructure and properties of α-FeSi2 modified C/C-SiC brake composites

Shangwu Fan, Yong Du, Liuyang He, Chuan Yang, Haiping Liu, Laifei Cheng, Litong Zhang, Nahum Travitzky

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In order to simultaneously reduce the fabrication cost and improve the properties of C/C-SiC brake composites fabricated by chemical vapor infiltration (CVI) combined with liquid silicon infiltration (LSI), α-FeSi2 modified C/C-SiC brake composites were fabricated by infiltrate cost-saving FeSi75 alloy powders into porous CVI-C/C composites. Microstructure, mechanical properties and tribological behaviors of the modified composites were studied. The results indicated that continuous infiltration was realized. The modified composites achieved higher flexural strength and fracture toughness. Brake temperature was decreased and the wear resistibility was significantly enhanced. It indicates that introducing metallic α-FeSi2 phase with lower modulus and higher toughness into the matrix can improve the mechanical properties and tribological behaviors of the C/C-SiC brake composites.

Original languageEnglish
Pages (from-to)10-18
Number of pages9
JournalTribology International
Volume102
DOIs
Publication statusPublished - 1 Oct 2016

Keywords

  • Carbon ceramic composite brake
  • Fe-Si alloy
  • Tribological behavior

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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