Continuous-fiber-reinforced amorphous ceramic composition
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United States of America Patent
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Aug 7, 2012
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N/A
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Jun 23, 2009
filing date -
Jun 23, 2008
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Abstract
The application discloses and claims an oxidation resistant, continuous-fiber-reinforced ceramic composition, durable at temperatures above 1000° C., and capable of taking on any arbitrary near net shape formed without machining and tooling. The composition of the invention comprises a fine grained ceramic matrix which in turn comprises a mixture of a ZrB2 phase and a SiC phase with the matrix being reinforced with SiC or C or an oxide fiber, resulting in a fine grained ZrB2—SiC matrix with domain sizes ≦0.5 μm. The ZrB2 phase of the invention is capable of forming small microcrystalline domains ≦0.5 μm upon heat treatment. The composition the invention also comprises a fiber reinforced composite with a high degree of filling and densification of its preform resulting in a composition containing a low level of porosity and high fiber volume fraction.
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