Вид документа : Статья из журнала Шифр издания : 54/N 21 Автор(ы) : Gusev A. I., Tulin A. A., Lipatnikov V. N., Rempel A. A. Заглавие : Nanostructure of Dispersed and Compact Nonstoichiometric Vanadium Carbide Место публикации : Russian Journal of General Chemistry. - 2002. - Vol. 72, № 7. - С. 997-1006: il. Примечания : Bibliogr. : p. 1005-1006 (21 ref.) ISSN: 1070-3632 ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): наноструктура--нестехиометрия--карбид ванадия Аннотация: Structure and properties of dispersed and compact nanocrystalline vanadium carbide VC0.875 were studied. Dispersed vanadium nanocarbide was prepared by prolonged aging of a coarse-grained VC0.875 powder. It has a unique nanostructure: nanocrystallites of dispersed vanadium carbide have a shape of bent lobes up to 600 nm in diameter and 15320 nm thick. Annealing and quenching of compact samples of coarsegrained VC0.875 carbide result in the formation of a nanodomain structure. The nanostructured carbide VC0.875 corresponds in composition to the higher boundary of a homogeneity area of a cubic phase and mainly contains ordered V8C7 phase, which belongs to the P4332 space group. Cold pressing and subsequent vacuum sintering of vanadium carbide nanopowder at 2000 K gave sintered samples approaching diamond in microhardness. Доп.точки доступа: Gusev, A. I.; Гусев Александр Иванович; Tulin, A. A.; Lipatnikov, V. N.; Липатников Владимир Николаевич; Rempel, A. A.; Ремпель Андрей Андреевич