Si.sub.3 N.sub.4 formed by nitridation of sintered silicon compa

Details Si.sub.3 N.sub.4 formed by nitridation of sintered silicon compa Si.sub.3 N.sub.4 formed by nitridation of sintered silicon compa

1976-01-06

1977-04-12

Garvin, Patrick P.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 735, 264 65, 264 66, C04B 3570, C04B 3558, F27B 910

Patent

active

040173194

ABSTRACT:
A polycrystalline silicon nitride body is produced by shaping a particulate mixture of silicon powder and boron into a green body, sintering the body to a density ranging from 60% to 75% of the theoretical density of silicon, said sintered body having pores which are interconnecting and open to the surface of the body, and reacting said sintered body with gaseous nitrogen to convert it to silicon nitride.

REFERENCES:
patent: 2618565 (1952-11-01), Nicholson
patent: 3544486 (1970-12-01), Passmore
patent: 3649312 (1972-03-01), Stibbs
patent: 3778231 (1973-12-01), Taylor
patent: 3813252 (1974-05-01), Lipp
patent: 3819786 (1974-06-01), May
patent: 3830652 (1974-08-01), Gazza
patent: 3839540 (1974-10-01), Arrol
patent: 3853566 (1974-12-01), Prochazka
patent: 3854189 (1974-12-01), Ezis et al.
patent: 3887411 (1975-06-01), Goodyear et al.

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