| 摘要 |
PURPOSE:To obtain a reactive title material contg. no unnecessary elements in spite that no high purity compds. are used by treating a soln,. of a metal compd. contg. unnecessary ions with an ion exchange resin and exchanging the unnecessary ions with an ion which is dissipated by heat-treatment, ten mixing with other metal compds. CONSTITUTION:A soln. of metal compd. contg. unnecessary ion for the ceramic (e.g. aq. ZrOCl2 soln.) is treated with an ion exchange resin (e.g. NO3<-> type anion exchange resin), and aq. soln. of an ion exchanged metal compd. [e.g. ZrO(NO3)2] contg. exchanged ion which is decomposed by heat-treatment and dissipated, is obtd. Then, other metal compds. [e.g. Y(NO3)3] than the above- described metal compd. but being necessary as constituting components for the ceramic, is mixed, and the ceramic raw material is prep. By this method, reactive raw material for a ceramic contg. no unnecessary element which may deteriorate the characteristics of produced ceramic is obtd. easily and inexpensively without using a compd. having high purity. |
