Abstract
The microtexture of Al2O3/Al composites with different oxide contents formed in the hydrothermal treatment of aluminum followed by thermal decomposition of boehmite is examined by a set of adsorption and structural analysis techniques. Two main types of alumina microtexture are found: relatively loose agglomerates of amorphous particles and highly ordered aggregates of well-crystallized primary blocks of a larger size, the fraction of which increases with the oxide content of the composite leads to an increase in the fraction of micropores and a decrease in the fraction of mesopores. The mechanism of thermal decomposition of boehmite prepared by the hydrothermal oxidation of aluminum is refined.
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Tikhov, S.F., Zaikovskii, V.I., Fenelonov, V.B. et al. Porous Al2O3/Al Metal Ceramics Prepared by the Oxidation of Aluminum Powder under Hydrothermal Conditions Followed by Thermal Dehydration: II. Composition and Microtexture of the Composites. Kinetics and Catalysis 41, 835–843 (2000). https://doi.org/10.1023/A:1026689523401
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DOI: https://doi.org/10.1023/A:1026689523401