Вид документа : Статья из журнала Шифр издания : 54/K 93 Автор(ы) : Kurlov A. S., Gusev A. I. Заглавие : Particle Size Effects on the Oxidation of Tungsten Carbide Nanopowders Место публикации : Russian Journal of Physical Chemistry A. - 2010. - Vol. 84, № 12. - С. 2095-2101: il. Примечания : Bibliogr. : p. 2101 (17 ref.) ISSN: 0036-0244 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): окисление--карбид вольфрама Аннотация: The oxidation of tungsten carbide (WC) powders with the average particle size 〈D〉 from 20 to 6000 nm was studied by differential thermal and differential thermogravimetric analyses. WC powders are oxidized, irrespective of their dispersity, to higher oxide WO3. The conclusion was drawn that at smaller particle sizes of WC powder, the oxidation rate increases, and the temperature of the peak of the exo effect decreases. The functional dependences of the temperature of the peak and the activation energy of oxidation on the particle size were determined Доп.точки доступа: Gusev, A. I.; Гусев Александр Иванович