METHODS OF FORMING CERAMIC MATRIX COMPOSITIONS USING SACRIFICIAL FIBERS AND NON-WETTING COATING

To provide methods for preparing ceramic matrix composites using melt infiltration and ceramic matrix composites obtainable by the methods.SOLUTION: The methods and products include the incorporation of a non-wetting coating to one or more sacrificial fibers. The one or more sacrificial fibers are r...

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Bibliographische Detailangaben
Hauptverfasser: DANIEL GENE DUNN, MCGUIGAN HENRY CHARLES
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide methods for preparing ceramic matrix composites using melt infiltration and ceramic matrix composites obtainable by the methods.SOLUTION: The methods and products include the incorporation of a non-wetting coating to one or more sacrificial fibers. The one or more sacrificial fibers are removed by decomposition during pyrolysis, resulting in the formation of a plurality of functional features, in the form of uniform and elongate channels along the ceramic matrix composite. During the removing of the one or more sacrificial fibers, the non-wetting coating remains on an interior surface of the plurality of functional features to block infiltration of an infiltrant to the plurality of functional features and deposition thereon. Alternatively, the sacrificial fibers may be removed subsequent to melt infiltration.SELECTED DRAWING: Figure 1 【課題】溶解浸透を使用してセラミック基質複合材料を準備するための方法、およびそれによって得られるセラミック基質複合材料を提供すること。【解決手段】方法および製品は、非湿潤塗膜を1つまたは複数の犠牲繊維に組み込むことを含む。1つまたは複数の犠牲繊維は、熱分解の間の分解などで除去され、セラミック基質複合材料に沿った均一で細長いチャネルの形態の、複数の機能的形体の形成をもたらす。1つまたは複数の犠牲繊維を除去する間、非湿潤塗膜は、複数の機能的形体の内面の上に留まって、溶浸材が複数の機能的形体に浸透してその上に堆積するのを阻止する。代替的に、犠牲繊維は、溶解浸透の後に除去されてもよい。【選択図】図1