Silicon nitride sintered products having high corrosion resistan

Details Silicon nitride sintered products having high corrosion resistan Silicon nitride sintered products having high corrosion resistan

1982-11-24

1985-02-12

Bell, Mark

Compositions: ceramic

Ceramic compositions

Refractory

501 98, C04B 3558

Patent

active

044991924

ABSTRACT:
A silicon nitride sintered product and processes for the production thereof are described, wherein the product comprises from 75 to 97.9% by weight of silicon nitride, from 2 to 20% by weight of yttrium oxide and cerium oxide in a molar ratio of cerium oxide to yttrium oxide of 0.4/1 to 4/1, and from 0.1 to 8% by weight of aluminum oxide.

REFERENCES:
patent: 4156051 (1979-05-01), Nakamura et al.
patent: 4180410 (1979-12-01), Masaki
patent: 4230494 (1980-10-01), Nakamura et al.
patent: 4264548 (1981-04-01), Ezis
patent: 4280850 (1981-07-01), Smith et al.

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