A study of the chemical vapor deposited silicon carbide whisker growth and whisker-containing composite coating

Hyung Suk Ahn, Doo Jin Choi

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Abstract

Many researchers have studied silicon carbide due to its excellent mechanical and chemical properties. Silicon carbide whiskers are important for reinforcement of CMC composites. However, metallic catalyst, which is necessary for the growth of whiskers, can cause degradation of their properties. Thus, we made silicon carbide whiskers without using a metallic catalyst. Whiskers were obtained with an input gas ratio of above 20, and their diameter decreased as the input gas ratio increased. We also deposited whisker-containing coatings based on these conditions by using nitrogen as a dilutant gas. The coatings obtained showed pebble-like structures, and their morphologies differ according to the whiskers grown under the coating layer.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalJournal of Ceramic Processing Research
Volume2
Issue number2
Publication statusPublished - 2001 Dec 1

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All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

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