Process for production of a Si3N4, based material

High-strength Si3N4-based material with a narrow range spread of values for mechanical properties useful for producing thick-walled ceramic parts for internal combustion engines, thick-walled ceramic fittings or cutting tools is produced by molding a powder-form starting mixture comprising powdered...

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Bibliographische Detailangaben
Hauptverfasser: WOETTING, GERHARD, GUGEL, ERNST, LEIMER
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:High-strength Si3N4-based material with a narrow range spread of values for mechanical properties useful for producing thick-walled ceramic parts for internal combustion engines, thick-walled ceramic fittings or cutting tools is produced by molding a powder-form starting mixture comprising powdered Si3N4, finely divided elemental silicon and sintering additives, and subsequently heat treating the mixture to obtain a sintered molding very near the theoretical density of the material.