Novel sialon composition

Details Novel sialon composition Novel sialon composition

1990-06-07

1991-07-09

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

423327, C04B 3558

Patent

active

050306006

ABSTRACT:
A novel composite mateial consisting of at least 70 weight percent of single-phase beta sialon and at least 20 weight percent of alpha-alumina is disclosed. The beta-sialon is of the formula Si.sub.6-z Al.sub.z -.sub.z N.sub.8-z, wherein z is from 2.5 to 3.5. The composite material contains no silicon nitride. Sintered products made from such composite material contain no glassy phase, contain no silicon nitride, and have superior thermal and mechanical properties.

REFERENCES:
patent: 4360506 (1982-11-01), Paris et al.
patent: 4812298 (1989-03-01), Kohtoku et al.
patent: 4845061 (1989-07-01), Inoguchi et al.

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