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AssigneeGeneral Electric Company
InventorsEdward J.A. Pope, Christopher L. Hill
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A novel polycrystalline stoichiometric fine SiC fiber substantially free of impurities is produced using a novel pre-ceramic polymer. The pre-ceramic polymer is prepared by reacting a mixture of chlorodisilane, boron trichloride, and a vinyl chlorodisilane with an excess of hexamethyldisilazane to form the pre-ceramic polymer resin, which may then be melt-spun, cured, pyrolyzed and heat-treated to obtain the finished SiC fiber. The manufacturing process for the production of the fine SiC ceramic fiber allows for flexibility with respect to cross-linking, in that low-cost thermal treatments may replace more complex methods, while obtaining fibers with improved materials properties as compared to currently available SiC fibers.
A method comprising:
A preceramic polymer to silicon carbide fibers in which all of the necessary constituents, including the elements of silicon and carbon, a rheology modifier, a cross-linking agent, a sintering aid, and a grain growth inhibitor, are all contained within said preceramic polymer sufficient to convert the polymer into near stoichiometric silicon carbide fiber after steps comprised of:
Dependencies are inferred from the claim text.