Improvement of densification uniformity of carbon/silicon carbide composites during chemical vapour infiltration

Kyung Mi Kim, Jin Won Seo, Kyoon Choi, Jong Heun Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We have investigated the influence of the process parameters on the density and distribution of 2.5D carbon preforms during chemical vapour infiltration (CVI) of silicon carbide. The lower the pressure and the substrate temperature, the higher the density and its uniformity. The temperature of the lower part of the disc-shaped specimen was as low as 1000°C to suppress the surface reaction that caused the closure of the open porosity. The specimen of 1000°C under 10 torr resulted in the density of 72.2% and the standard deviation of 13.9%., while that of 1000°C under 50 torr showed the density of 69.1% and the standard deviation of 18.6%. The low density of the specimen was mainly attributed to the large voids between the carbon bundles.

Original languageEnglish
Pages (from-to)555-567
Number of pages13
JournalInternational Journal of Nanotechnology
Volume15
Issue number6-7
DOIs
Publication statusPublished - 2018

Bibliographical note

Funding Information:
This work was supported by Ceramic Strategic Research Program through Korea Institute of Ceramic Engineering & Technology (KICET). This research was also supported by Materials/Components Technology Development Program through the Korea Evaluation Institute of Industrial Technology (KEIT) funded by the Ministry of Trade, Industry and Energy (MOTIE) (grant code: 10065691).

Publisher Copyright:
Copyright © 2018 Inderscience Enterprises Ltd.

Keywords

  • CMC
  • CVI
  • Carbon fibre
  • Ceramic matrix composite
  • Chemical vapour infiltration
  • High temperature ceramics
  • Silicon carbide

ASJC Scopus subject areas

  • Bioengineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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