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Author: Shuitiro Ono Publisher: ISBN: Category : Aluminates Languages : en Pages : 40
Book Description
Corundum (Al2O3) was obtained from boehmite (AlOOH) under hydrothermal conditions at temperatures above 400C. The grain size of the crystals with definite habits was 10 to 100 microns. The effects of impurity on the crystallization process of corundum were investigated. It was found that the reaction rate, crystal size and habit, and incorporation of added ions were strongly influenced by temperature change, pH change, and addition of impurities into the solution. These observed data were explained as the results of impurity effects on the solvent structure, solution structure, solubility, diffusion process, nucleation process, and growth process. Habit modification of corundum by adding iron-group ions as sulfate, nitrate, chloride, hydroxide or oxide was determined. Copper ion is not solid-soluble in corundum if sulfate ion coexists; it is solid-soluble substitutionally as Cu(3+) in six coordinated sites if it is added as nitrate, oxide or hydroxide.
Author: Shuitiro Ono Publisher: ISBN: Category : Aluminates Languages : en Pages : 40
Book Description
Corundum (Al2O3) was obtained from boehmite (AlOOH) under hydrothermal conditions at temperatures above 400C. The grain size of the crystals with definite habits was 10 to 100 microns. The effects of impurity on the crystallization process of corundum were investigated. It was found that the reaction rate, crystal size and habit, and incorporation of added ions were strongly influenced by temperature change, pH change, and addition of impurities into the solution. These observed data were explained as the results of impurity effects on the solvent structure, solution structure, solubility, diffusion process, nucleation process, and growth process. Habit modification of corundum by adding iron-group ions as sulfate, nitrate, chloride, hydroxide or oxide was determined. Copper ion is not solid-soluble in corundum if sulfate ion coexists; it is solid-soluble substitutionally as Cu(3+) in six coordinated sites if it is added as nitrate, oxide or hydroxide.
Author: Air Force Cambridge Research Laboratories (U.S.) Publisher: ISBN: Category : Geophysics Languages : en Pages : 268
Book Description
This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports issued from 1 April to 30 June 1970. Abstracts are included.
Author: Shuitiro Ono
Author: Shuitiro Ono
Author: 
Author: Rodney Delano Bagley
Author: Air Force Cambridge Research Laboratories (U.S.)
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Author: C. J. Lind
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Author: Gerald B. Stringfellow
Author: J. D. McClelland
Author: Frank A. Peters