T. S. Pozdova, D. A. Permin, M. D. Nazmutdinov, M. S. Boldin, K. A. Rubtsova, R. S. Kovylin, A. A. Moskvichev
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引用次数: 0
Abstract
The effect of the solution acidity on the phase composition and morphology of alumina powers precipitated from solution using Al(NO3)3·9H2O and NH4HCO3 was studied. In the рН range of 5–7, an amorphous precursor powder was typically formed; at рН 8–9, NH4AlCO3(OH)2 crystals were formed. When annealed, the powders precipitated from acidic solutions were 100% α-Al2O3, which was represented by agglomerated equiaxed particles sized ca. 100–200 nm. The powders prepared in neutral or alkaline solutions, when annealed, formed additional minor θ-Al2O3 and γ-Al2O3 phases in equiaxed particles sized ca. 20–25 nm.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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