Si.sub.3 N.sub.4 containing intergranular phase nucleating agent

Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...

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106 732, 106 734, C04B 3558, C04B 3504, C04B 3550

Patent

active

041793013

ABSTRACT:
Polycrystalline ceramic bodies of Si.sub.3 N.sub.4 when prepared with a nucleating agent to obtain an intergranular phase which is substantially crystalline, exhibit improved mechanical strength at elevated temperatures over bodies having a glass-containing intergranular phase.

REFERENCES:
patent: 3830652 (1974-08-01), Gagge
patent: 3969125 (1976-07-01), Komeya et al.
patent: 4073845 (1978-02-01), Baljan

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