Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
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.
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J. C. Williams, "Doctor-Blade Process", Treatise on Materials Science & Technology, vol. 9, Ceramic Fabrication Processes, 1976, Academic Press, Inc., New York.
Grote Dieter
Hoffmann Carl
Derrington James
Hoechst Ceramtec Aktiengesellschaft
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