Journal
TRIBOLOGY INTERNATIONAL
Volume 102, Issue -, Pages 10-18Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.05.016
Keywords
Carbon ceramic composite brake; Fe-Si alloy; Tribological behavior
Categories
Funding
- Fundamental Research Funds for the Central Universities [3102014KYJD012, 310ZD]
- NPU Foundation for Fundamental Research [NPU-FFR-JC20110243]
- Shaanxi Science and Technology Research and Development [2014K08-20]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [145-QZ-2016]
- China Scholarship Council [[2013]3018]
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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), alpha-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 alpha-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. (C) 2016 Elsevier Ltd. All rights reserved.
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