Thermally stable silicon nitride material

Details Thermally stable silicon nitride material Thermally stable silicon nitride material

1981-12-21

1983-06-14

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Refractory

264332, 264 65, 501152, 501154, C04B 3558

Patent

active

043884148

ABSTRACT:
A thermally stable, oxidation resistant ceramic Si.sub.3 N.sub.4 material is disclosed. The material has a substantially pure primary phase formed of substantially pure silicon nitride. A substantially pure secondary phase of the material is formed of a material selected from the group consisting essentially of Si.sub.3 N.sub.4 /SiO.sub.2 /4Y.sub.2 O.sub.3, Si.sub.3 N.sub.4 /SiO.sub.2 /2Y.sub.2 O.sub.3 and Si.sub.3 N.sub.4 /4SiO.sub.2 /5Y.sub.2 O.sub.3. The primary phase may be in the form of individual grains and the secondary phase may be in the form of grain boundaries between the individual grains.

REFERENCES:
patent: 4102698 (1978-07-01), Lange et al.
patent: 4264548 (1981-04-01), Ezis
patent: 4264550 (1981-04-01), Ezis
patent: 4280850 (1981-07-01), Smith et al.
patent: 4285895 (1981-08-01), Mangels et al.
patent: 4323325 (1982-04-01), Samanta et al.
patent: 4341874 (1982-07-01), Nishida et al.
patent: 4354990 (1982-10-01), Martinengo et al.

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