E 27 Effect of Conditions under Which Powdered Lanthanum is Heated on Its Interaction with Air / V. G. Shevchenko, V. I. Kononenko, N. V. Lukin, I. N. Latosh, I. A. Chupova // Combustion, Explosion, and Shock Waves. - 1999. - Vol. 35, № 1. - P. 77-79 : il. - Bibliogr. : p. 79 (9 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ПОРОШКИ ЛАНТАНА -- ТЕРМОГРАВИМЕТРИЯ -- ОКСИД ЛАНТАНА -- НАГРЕВАНИЕ Аннотация: Thermogravimetric, d i f f e r e n t i a l - t h e r m o g r a p h i c , chemical, and x-ray phase analysis methods are used to study the effect of the rate at which powdered lanthanum is heated in air on the nature of the reaction products. It is found that for heating rates of up to 150 K/rain the interaction with air ends in the formation of lanthan~m oxide. At heating rates of 150-600 K/rain, a nitride phase is formed along with LazO3. Further increases in the heating rate lead to formation of the oxide phase only. The reasons for this behavior of lanthanum are examined. \\\\Expert2\\nbo\\Combustion, Explosion, and Shock Waves\\1999, V. 35, N 1, p.77-79.pdf |