O-97 Oxidation of Powdered Alloysof Aluminum and Cerium during Heating in Air / V. G. Shevchenko, V. I. Kononenko, I. A. Chupova, I. N. Latosh, N. V. Lukin // Combustion, Explosion, and Shock Waves. - 2001. - Vol. 37, № 4. - P413-417 : il. - Bibliogr. : p. 416-417 (15 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ОКИСЛЕНИЕ -- СПЛАВЫ -- АЛЮМИНИЙ -- ЦЕРИЙ Аннотация: The e?ect of cerium on the oxidation of powdered alloys of aluminum and cerium??during heating in air at temperatures up to 1773 K was studied using derivatography,??x-ray phase analysis, and thermal desorption of argon. It is established that the rate??and completeness of the oxidation of aluminum increase if it is alloyed with cerium.??The e?ect of cerium is due to its polyvalence, high reactivity, and surface activity??toward aluminum. Structural and phase nonuniformities that arise during the growth??of oxide phases on the surface of oxidized particles of the alloys enhance the interaction??of these particles with air oxygen. It is shown that the assumptions that the surfaces??of the alloys have a micrononuniform structure and are enriched with CeAl2 and CeAl4??groups are valid \\\\Expert2\\nbo\\Combustion, Explosion, and Shock Waves\\2001, V. 37, N 4, p.413-417.pdf |