Process for producing ceramic film casting mixtures for thin-fil

Details Process for producing ceramic film casting mixtures for thin-fil Process for producing ceramic film casting mixtures for thin-fil

1990-05-25

1992-02-18

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

264166, 241 29, C04B 3510

Patent

active

050891944

ABSTRACT:
To produce Al.sub.2 O.sub.3 -containing ceramic film casting mixtures for thin-film circuits, unground, calcined alumina with low primary particle size and high reactivity is ground, optionally together with a solvent mixture, then the binder or a mixture of a plurality of different binders and the plasticizer or a mixture of a plurality of different plasticizers are added and the mixture is ground again until the alumina reaches a particle size of 2-10 .mu.m. The alumina, optionally together with a sintering aid, may first be ground alone in the solvent or the solvent mixture for 24 to 72 hours. The sintering aid or sintering aids may also be first ground in the solvent or the solvent mixture and the alumina added to the suspension obtained.

REFERENCES:
patent: 3698923 (1972-10-01), Stetson et al.
patent: 3895963 (1975-07-01), McGowan et al.
patent: 3972480 (1976-08-01), Powers
patent: 4045412 (1977-08-01), Yamada et al.
patent: 4678702 (1987-07-01), Lancaster et al.
patent: 4786342 (1988-11-01), Zellner
patent: 4797270 (1989-01-01), Cendan et al.
J. C. Williams, "Doctor-Blade Process", Treatise on Materials Science & Technology, vol. 9, Ceramic Fabrication Processes, 1976, Academic Press, Inc., New York.

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