FREMGANGSMAATE VED FREMSTILLING AV ET FORHAANDSFORMET POLYKRYSTALLINSK SILICIUMNITRIDLEGEME

FREMGANGSMAATE VED FREMSTILLING AV ET FORHAANDSFORMET POLYKRYSTALLINSK SILICIUMNITRIDLEGEME

A polycrystalline silicon nitride body is produced by shaping silicon powder into a green body, sintering the body to produce a sintered body with a density ranging from 60% to 75% of the theoretical density of silicon, said sintered body having a microstructure with an average grain size as well as...

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Bibliographische Detailangaben
Hauptverfasser: PROCHAZKA, SVANTE, GRESKOVICH, CHARLES DAVID
Format: Patent
Sprache:nor
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:A polycrystalline silicon nitride body is produced by shaping silicon powder into a green body, sintering the body to produce a sintered body with a density ranging from 60% to 75% of the theoretical density of silicon, said sintered body having a microstructure with an average grain size as well as an average poresize ranging from about 0.1 micron to 6 microns and wherein the pores are interconnecting and open to the surface of the body, and reacting said sintered body with gaseous nitrogen to convert it to silicon nitride.