Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 88, Issue 9, Pages 2573-2577Publisher
WILEY
DOI: 10.1111/j.1551-2916.2005.00484.x
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Subsolidus phase relationships in the Ga2O3-AI(2)O(3)-TiO2 system at 1400 degrees C were studied using X-ray diffraction. Phases present in the pseudoternary system include TiO2 (rutile), Ga(2-2x)AI(2x)O(3) (x <= 0.78 beta-gallia structure), AI(2-2y)Ga(2y)O(3) (gamma <= 0.12 corundum structure), Ga(2-2x)AI(2x)TiO(5) (0 <= x <= 1 pseudobrookite structure), and several beta-gallia rutile intergrowths that can be expressed as Ga(4-4x)AI(4x)Ti(n-4)O(2n-2) (x <= 0.3, 15 <= n <= 33). This study showed no evidence to confirm that aluminum substitution of gallium stabilizes the n = 7 beta-gallia-rutile intergrowth as has been mentioned in previous work.
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