Methods for producing silicon carbide fibers
AssigneeAdvanced Ceramic Fibers, LLC
InventorsJohn E. Garnier, George W. Griffith
Life of this patent
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Abstract
Methods of producing silicon carbide fibers. The method comprises reacting a continuous carbon fiber material and a silicon-containing gas in a reaction chamber at a temperature ranging from approximately 1500° C. to approximately 2000° C. A partial pressure of oxygen in the reaction chamber is maintained at less than approximately 1.01×102 Pascal to produce continuous alpha silicon carbide fibers. Continuous alpha silicon carbide fibers and articles formed from the continuous alpha silicon carbide fibers are also disclosed.
Claims21
A method of producing alpha silicon carbide fibers, comprising:
- reacting a carbon fiber material and a silicon-containing gas in a reaction chamber at a temperature ranging from approximately 1500° C. to approximately 2000° C. and a pressure of about 1 atmosphere;
- and
- maintaining a partial pressure of oxygen in the reaction chamber of less than approximately 1.01×102 Pascal to produce alpha silicon carbide fibers.
A method of producing silicon carbide fibers, comprising:
- drawing a continuous carbon fiber material into a reaction zone of a reaction chamber, the reaction zone comprising silicon dioxide, silicon, and a carrier gas;
- and
- heating the reaction zone comprising silicon dioxide, silicon, and the carrier gas to a temperature ranging from approximately 1600° C. to approximately 1800° C. and at a pressure of about 1 atmosphere, while maintaining a partial pressure of oxygen of less than approximately 1.01×102 Pascal to produce continuous alpha silicon carbide fibers.
A method of converting carbon fiber to alpha silicon carbide fiber, the method comprising:
- feeding a carbon fiber material through a reaction chamber, the reaction chamber including a silicon-containing gas, the reaction chamber being at a temperature ranging from approximately 1500° C. to approximately 2000° C. and a pressure of approximately 1 atmosphere, wherein a partial pressure of oxygen in the reaction chamber is less than approximately 1.01×102 Pascal;
- such that the carbon fiber material reacts with the silicon-containing gas, converting the carbon fiber material to alpha silicon carbide fiber, the alpha silicon carbide fiber comprising filaments of alpha silicon carbide.
Dependencies are inferred from the claim text.