Surface treatment for silicon carbide filaments and product
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United States of America Patent
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Jun 18, 1991
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N/A
app pub date -
Mar 16, 1989
filing date -
Mar 16, 1989
priority date (Note) -
Expired
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Abstract
The invention relates to a surface treatment for silicon carbide filaments. A carbon-rich silicon carbide layer or coating is formed over the silicon carbide surface. The ratio of silicon to carbon in the carbon-rich silicon carbide layer varies from 1 (stoichiometric) at the silicon carbide filament interface to about 0.43 (70% carbon, 30% silicon) at the exterior surface of the carbon-rich layer. A preferred method of making the carbon-rich silicon carbide layer is also presented.
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