Process for production of nitride ceramic shapes

Details Process for production of nitride ceramic shapes Process for production of nitride ceramic shapes

1989-03-21

1991-04-09

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

501 97, 501 98, C04B 3558

Patent

active

050064916

ABSTRACT:
There is first prepared a mixture of a nitride ceramic material (e.g. aluminum nitride) and a sintering aid (e.g. calcium carbonate), both in finely divided form. Admixed with a binder, the mixture is pressed into moldings of desired shape. The moldings are sintered to maturity in a nitrogenous atmosphere. The sintered moldings are subsequently aftertreated by being exposed to fluorine or its compound at a reduced temperature in the range of, typically, 1000.degree. to 1600.degree. C. The aftertreatment eliminates undesired intergranular substances from the sintered moldings and thus improves their thermal conductivity.

REFERENCES:
patent: 3591668 (1971-07-01), Kichner et al.
patent: 3786124 (1974-01-01), Platts
patent: 4435513 (1984-04-01), Komaya et al.
patent: 4698320 (1987-10-01), Kasori et al.
patent: 4711861 (1987-12-01), Sawamura et al.
patent: 4719187 (1988-01-01), Bardhan et al.
patent: 4746637 (1988-05-01), Kasori et al.
patent: 4753763 (1988-06-01), Tanaka et al.
patent: 4810479 (1989-03-01), Biardeau et al.
patent: 4810679 (1989-03-01), Dole et al.
patent: 4857140 (1989-08-01), Loewenstein
patent: 4877482 (1989-10-01), Knapp et al.

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