Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1975-01-29
1977-04-26
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
106 63, 264 61, 264176R, 264DIG25, C04B 3564
Patent
active
040201341
ABSTRACT:
A method for preparing shaped, green ceramic compacts suitable for firing to form high density .beta."-alumina containing ceramic bodies comprising: (1) mixing between about 2.5 parts by weight and about 4.5 parts by weight of a ceramic composition comprising at least about 80 weight percent of aluminum oxide and from about 5 to about 15 weight percent of sodium oxide with 1 part by weight of a binder composition consisting essentially of between about 20 weight percent and about 35 weight percent of polyvinyl pyrrolidone having a number average molecular weight (M.sub.n) between about 20,000 and about 160,000 and between about 80 weight percent and about 65 weight percent of ethylene glycol; (2) extruding the mixture so formed through a die of desired configuration; and (3) heating the extrudate at temperatures and for periods of time necessary to evaporate the ethylene glycol solvent and burn off the polyvinyl pyrrolidone.
REFERENCES:
patent: 2952877 (1966-09-01), Park
patent: 3285873 (1966-11-01), Bailey
patent: 3417054 (1968-12-01), Merijan et al.
patent: 3652749 (1972-03-01), Sobel et al.
Bruch, "Extruding Fine Alumina Powders," Ceramic Age, June (1972), pp. 18-25.
Gordon Ronald S.
Sutton Ralph W.
Tennenhouse Gerald J.
Ford Motor Company
May Roger L.
Parrish John
White Robert F.
Zerschling Keith L.
LandOfFree
Method for preparing shaped, green ceramic compacts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for preparing shaped, green ceramic compacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing shaped, green ceramic compacts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2087497