JPH0577633B

JPH0577633B

PCT No. PCT/EP88/00205 Sec. 371 Date Sep. 11, 1989 Sec. 102(e) Date Sep. 11, 1989 PCT Filed Mar. 15, 1988 PCT Pub. No. WO88/07029 PCT Pub. Date Sep. 22, 1988.Carbide fiber- and carbide whisker-strengthened silicon nitride bodies are hot-isostatic pressed without encapsulation of the pressureless pre...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GURAIRU PEETAA, PETSUTSUO GYUNTAA, NITSUKERU KURAUSU, HOFUMAN MIHYAERU
Format: Patent
Sprache:eng
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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Zusammenfassung:PCT No. PCT/EP88/00205 Sec. 371 Date Sep. 11, 1989 Sec. 102(e) Date Sep. 11, 1989 PCT Filed Mar. 15, 1988 PCT Pub. No. WO88/07029 PCT Pub. Date Sep. 22, 1988.Carbide fiber- and carbide whisker-strengthened silicon nitride bodies are hot-isostatic pressed without encapsulation of the pressureless pre-sintered formed body at temperature between 1000 DEG and 3000 DEG C. in a nitrogen-protective gas atmosphere. At a low nitrogen partial pressure but high total gas pressure, a maximum consolidation can be achieved already at relatively low temperatures without destruction of the carbide fibers or carbide whiskers.