| 摘要 |
PURPOSE:To obtain conveniently and inexpensively the title titanate porcelain material by gelating an aq. mixed soln. of titaniasol and a metallic salt, and calcining the gelated mixture. CONSTITUTION:An aq. mixed soln. of titaniasol and the salt of a metal excluding titanium is gelated to a gelled mixture. The mixture is then calcined to obtain the desired porcelain material. The gelation is carried out at >=4.0pH. The calcination is performed in the sir at >=600 deg.C. The desired titanate can not be satisfactorily obtained at <600 deg.C calcination temp. The metallic salt to be used must be easily decomposable, and a single salt or plural salts among the salts of rare earth elements such as Sn, Zr, Ba, Ca, Pb, Hg, Sr, Mn, Bi, and Nb is used. Since the titaniasol is sufficiently mixed with the Ba salt, etc., and the easily decomposable metallic salt is used in this method, a solid- phase reaction proceeds at low temps. by synergistic effect and the desired titanate is formed.
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