Sintered body of ceramics and preparation thereof

Details Sintered body of ceramics and preparation thereof Sintered body of ceramics and preparation thereof

1982-08-09

1983-10-04

Bell, Mark

Compositions: ceramic

Ceramic compositions

Refractory

501 98, C04B 3550, C04B 3558

Patent

active

044079702

ABSTRACT:
There are disclosed a sintered body of ceramics, comprising 0.1 to 10% by weight of Y.sub.2 O.sub.3 ; 0.1 to 10% by weight of Al.sub.2 O.sub.3 ; 0.1 to 10% by weight of AlN; 0.1 to 5% by weight of at least one oxide selected from the group consisting of Li.sub.2 O, BeO, CaO, V.sub.2 O.sub.5, MnO.sub.2, MoO.sub.3 and WO.sub.3 or a combination of at least one of these oxides with at least one oxide selected from the group consisting of B.sub.2 O.sub.3 MgO, TiO.sub.2, Cr.sub.2 O.sub.3, CoO, NiO, ZrO.sub.2, Nb.sub.2 O.sub.5, HfO.sub.2 and Ta.sub.2 O.sub.5 ; and the balance of Si.sub.3 N.sub.4, and a process for producing a sintered body of ceramics, which comprises molding a powder mixture of the same composition, and sintering the resultant molded compact in a non-oxidative atmosphere.
The process of the present invention requires no hot press and therefore very suitable for bulk production.

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Chem. Abstract, vol. 94, 1981, pp. 299, 317.
European Search Report, Application 82 10 7134.

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