Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1650943 | Materials Letters | 2008 | 4 Pages |
Abstract
Boron modified silicon oxycarbides (SiBOCs) were prepared from sol–gel derived pre-ceramic polymeric gels followed by pyrolysis at 950 °C under nitrogen. As-prepared SiBOC was found to be amorphous in nature and partially crystallized to SiO2 at 1500 °C. The effect of boron incorporation on the crystallization of SiBOC was studied and the result revealed that the tendency to crystallization decreased with increasing boron content. This is due to the formation of Si–O–B bridges at higher temperatures, which retards the crystallization of SiO2, evidenced from FTIR studies. SiBOC also exhibited excellent oxidation resistance ability at high temperature.
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Physical Sciences and Engineering
Materials Science
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Authors
M.N. Muralidharan, N.C. Pramanik, P.A. Abraham, K. Stanly Jacob, N. Rani Panicker,