MANUFACTURE OF ZIRCONIA-BASE HYPERFINE POWDER,申请号JP19830203722-传众专利搜索

MANUFACTURE OF ZIRCONIA-BASE HYPERFINE POWDER

申请公布号：JPS60103033(A)

申请号：JP19830203722

申请日期：1983.11.01

申请公布日期：1985.06.07

申请人：

CHICHIBU CEMENT KK

发明人：SOUMIYA SHIGEYUKI;YOSHIMURA MASAHIRO;MINEGISHI KEIICHI;HASEGAWA KIYOSHI;HISHINUMA KAZUMICHI

分类号：C04B35/48;C01G25/02

主分类号：C04B35/48

摘要：PURPOSE:To manufacture the titled hyperfine powder having high crystallizability at a relatively low temp. in a short time by adding a nitrogen compound which generates ammonia by decomposition to an aqueous soln. contg. a zirconium salt and by treating the soln. in an autoclave. CONSTITUTION:A compound which generates ammonia by decomposition such as urea or cyanate is added to an aqueous soln. of a zirconium salt such as zirconium oxychloride or an aqueous soln. contg. a zirconium salt and a salt of a desired metal such as Mg, Ca or Y which provides high toughness or stability, and the soln. is treated in an autoclave to manufacture the titled hyperfine powder having a uniform particle size and causing no coagulation. Since unlike a conventional slow reaction a rapid reaction is carried out by the autoclave treatment with the nitrogen compound which generates ammonia by decomposition, the titled hyperfine powder having high crystallizability can be synthesized at a relatively low temp. in a short time, thus, the manufacturing cost can be reduced.