Ceramic composite article prodn. - by bonding parts with binder of ceramic filler in aq. polymer soln.

摘要

(A) In the prodn. of a ceramic composite article by bonding two articles of the same ceramic material using a binder and then sintering, the ceramic articles have the same thermal shrinkage at room temp. to the sintering temp. and the binder consists of the same ceramic material as filler in an aq. soln. of a water-soluble polymer. (B) A binder, for bonding ceramic articles, consistse of a ceramic filler in an aq. soln. of a water-soluble polymer. Pref. the polymer is one or more of methylcellulose, carboxy carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, polyacrylic acid, polyacrylamide and polethylene oxide. USE/ADVANTAGE - The binder is esp. useful for binding calcium phosphate type ceramics to produce a bio-material. The process and binders low cost and avoid leaching out of noxious substances during use of the article.