PRODUCTION OF SILICON NITRIDE AND THE PRODUCT THEREBY OBTAINED

A process for the production of silicon nitride by the reaction of silicon and nitrogen, wherein, in the reaction step, silicon powder is reacted with nitrogen with continuous rolling round at a temperature of from 1000 to 1800.degree.C. and at a pressure of from 1.01 to 1.8 bar up to a nitrogen con...

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Hauptverfasser:	HINTERMAYER, JOCHEN, SCHROLL, GEORG, GRAF, ERNST, GMOEHLING, WERNER, KOBLER, WOLFGANG
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS THEREOF CONCRETE INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY NON-METALLIC ELEMENTS REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A process for the production of silicon nitride by the reaction of silicon and nitrogen, wherein, in the reaction step, silicon powder is reacted with nitrogen with continuous rolling round at a temperature of from 1000 to 1800.degree.C. and at a pressure of from 1.01 to 1.8 bar up to a nitrogen content of 1 to 39.5% by weight, and a silicon nitride which is produced by such process which is of porous form and has the following properties: a) grain size of 0.1 to 20 mm., b) nitrogen content of 1 to 39.5% by weight, c) oxygen content of