Continuous synchronous composite process for fabricating carbon/silicon carbide composites

P. Xiao, Y. D. Xu, L. T. Zhang, L. F. Cheng, Z. F. Chen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The continuous synchronous composite (CSC) process is a new technique, the preparation of reinforcement-phase accompanied simultaneously the deposition of SiC matrix, based on CVI principles for fabrication of ceramic matrix composites. In the CSC process, there was a gradient temperature field on the surface of the graphitic substrate, consisting of high (1000-1200°C), intermediate (900-1000°C) and low (700-900°C) temperature regions, by a bottom heating-element. Following the rotating substrate, micro-pores were well infiltrated in the intermediate temperature regions by gas diffusion transport, and macro-pores were rapidly filled with SiC in the high temperature regions by gas flow transport, respectively. In the present paper, 2-dimension carbon cloth reinforced SiC composites was fabricated by CSC process, and the microstructure, deposition rate and conversion efficiency of methyltrichlorosilane (MTS) were investigated. The densification of C/SiC composites was uniform, and the highest deposition rate within macro-pores was 25 μm h-1, and the conversion efficiency of MTS varied from 11% to a maximum of 27%.

Original languageEnglish
Pages (from-to)244-250
Number of pages7
JournalMaterials Science and Engineering: A
Volume313
Issue number1-2
DOIs
StatePublished - 31 Aug 2001

Keywords

  • Carbon/silicon carbide
  • Continuous synchronous composite
  • Conversion efficiency
  • Deposition rate
  • Microstructure

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