METHOD FOR MAKING CERAMIC MATRIX COMPOSITE ARTICLES

A method of forming a composite article includes impregnating an inorganic fiber preform with a slurry composition. The slurry composition includes a particulate, a solvent, and a pre-gellant material. Gelling of the pre-gellant material in the slurry composition is initiated to immobilize the parti...

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Bibliographische Detailangaben
Hauptverfasser:	HARRIS, STEPHEN ISAIAH, LANDWEHR, SEAN E, GOETZ, ANTHONY MARTIN, SHINAVSKI, ROBERT
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ARTIFICIAL STONE CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GENERAL PROCESSES OF COMPOUNDING LIME, MAGNESIA METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF NATURAL STONE WORKING-UP
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Beschreibung
Zusammenfassung:	A method of forming a composite article includes impregnating an inorganic fiber preform with a slurry composition. The slurry composition includes a particulate, a solvent, and a pre-gellant material. Gelling of the pre-gellant material in the slurry composition is initiated to immobilize the particulate and yield a gelled article, and substantially all solvent is removed from the gelled article to form a green composite article. The green composite article is then infiltrated with a molten infiltrant to form the composite article. Une méthode servant à former un article composite comprend remplir une préforme en fibres inorganiques avec une composition de liquide chargé. La composition de liquide chargé comprend une matière particulaire, un solvant et une matière prégélifiante. On commence la gélification de la matière prégélifiante dans la composition de liquide chargé en vue dimmobiliser la matière particulaire et dobtenir un article gélifié, puis on procède à lélimination dessentiellement tout le solvant dans larticle gélifié pour produire un article composite cru. Par la suite, la méthode consiste à remplir larticle composite vert d'une matière infiltrante en fusion en vue de produire larticle composite cru.