Subsolidus Phase Relationships in the Ga2O3–Al2O3–TiO2 System
Abstract:Subsolidus phase relationships in the Ga2O3–Al2O3–TiO2 system at 1400°C were studied using X-ray diffraction. Phases present in the pseudoternary system include TiO2 (rutile), Ga2−2xAl2xO3 (x≤0.78 -gallia structure), Al2−2yGa2yO3 (y≤0.12 corundum structure), Ga2−2xAl2xTiO5 (0≤x≤1 pseudobrookite structure), and several -gallia rutile intergrowths that can be expressed as Ga4−4xAl4xTin−4O2n−2 (x≤0.3, 15≤n≤33). This study showed no evidence to confirm that aluminum substitution of gallium stabilizes the n=7 -gallia–rutile intergrowth as has been mentioned in previous work.
Document Type: Research Article
Affiliations: School of Engineering, Alfred University, Alfred, New York 14802
Publication date: September 1, 2005