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AssigneeKabushiki Kaisha Toshiba
InventorsTsuneji Kameda, Shoko Suyama, Yoshinori Hayakawa
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A fiber reinforced ceramic matrix composite is disclosed which comprises a ceramic matrix and a fiber preform integrally assembled therein, the fiber preform comprising a braided fabric derivable from braiding a yarn which is composed of a plurality of fiber bundles formed of a plurality of monofilaments bundled together, the braided fabric being present in a volume fraction of fiber (Vf) of 10 to 40% by volume based on the total volume of the ceramic matrix composite. The yarns (fiber bundles) may preferably be disposed in oblique relation to each other. Initial matrix cracking strength, crack propagation resistance and fracture energy are greatly increased. Fiber preforms having a complicated shape can be easily obtained.
A fiber reinforced ceramic matrix composite comprising a ceramic matrix and a fiber preform integrally assembled therein, said fiber preform comprising fabric elements, said fabric elements are derived from braiding a yarn which is composed of a plurality of fiber bundles formed of a plurality of monofilaments bundled together, said fiber preform being present in a volume fraction of fiber (Vf) of 10 to 40% by volume based on the total volume of the ceramic matrix composite, said fiber preform further including middle-end-yarns disposed at a flexing-free portion of said fiber preform where said fabric elements intersect with each other, wherein said fabric elements form said fiber preform by braiding, stitching, or by weaving a three-dimensional orthogonal weave, a plain weave, or a twill weave.
Dependencies are inferred from the claim text.