Journal of Siberian Federal University. Engineering & Technologies: Phase Composition, Structure and Specific Surface of Powder Systems Based on Corundum of Different Dispersity

Journal of Siberian Federal University. Engineering & Technologies / Phase Composition, Structure and Specific Surface of Powder Systems Based on Corundum of Different Dispersity

Issue: Journal of Siberian Federal University. Engineering & Technologies. 2009 2 (3)
Authors: Grigoriev, Mihail V.; Kulkov, Sergey N.
Contact information: Grigoriev, Mihail V. : 2/4 Akademicheskiy, Tomsk, 634021 Russia,; Kulkov, Sergey N. : 2/4 Akademicheskiy, Tomsk, 634021 Russia, e-mail:
Keywords: phase transformations; nanostructure; corundum; strength
Abstract: It has been studied the structure, phase composition and the specific surface of alumina-based powder systems produced by the method of thermal decomposition of hydroxide aluminum and the plasmaspray pyrolysis method. It was shown that in the coarse-grained powder the transformation to α - form is occurred in a wide temperature range (600-1200 °C) while for a plasmochemical powder this transition was observed in a narrow range of temperatures (1150-1200 °C) and has a sharp, «explosive» character and is accompanied by destruction of foam-like agglomerates and an increasing of the specific surface.
Pages: 294-300
Paper at repository of SibFU: https://elib.sfu-kras.ru/handle/2311/1455