ZnO添加Ca_3Al_2O_6組成調合物の熱水処理による生成物

概要

論文の詳細を見る
Mixtures of Ca(OH)2, Al2O3 and ZnO corresponding to 100-80 (3CaO+Al2O3)+0-20 (ZnO) in composition were treated hydrothermally at temperatures between 120°C and 300°C in saturated steam condition. The treated specimens were examined with an X-ray diffractometer and a polarizing or electron microscope.The results obtained were as follows.1) The mixture of 3CaO+Al2O3 gave Ca3Al2(OH)12 at temperatures between 120°C and 220°C and a mixture of Ca3Al2(OH)12+Ca4Al6O10(OH)6+Ca(OH)2 at temperatures between 230°C and 300°C.2) The mixtures of 98-80 (3CaO+Al2O3)+2-20 (ZnO) gave mixtures of Ca3Al2(OH)12+ZnO at temperatures between 120°C and 170°C, Ca3Al2(OH)12+Ca(OH)2+ZnAl2O4 at temperatures between 180°C and 220°C and Ca3Al2(OH)12+Ca4Al6O10(OH)6+Ca(OH)2+ZnAl2O4 at temperatures between 230°C and 300°C.3) The crystals of Ca3Al2(OH)12 were appeared as characteristic dodecahedrons ranging from 4μm to 10μm in diameter. ZnAl2O4 were appeared as granular crystals ranging from 1μm to 5μm in diameter.
社団法人日本セラミックス協会の論文
1976-01-01