Вид документа : Статья из журнала Шифр издания : 54/G 96 Автор(ы) : Gusev A. I., Kurlov A. S. Заглавие : Production of nanocrystalline powders by high-energy ball milling: model and experiment Место публикации : Nanotechnology. - 2008. - Vol. 19, № 26. - С. 265302/1-265302/8 Примечания : Библиогр. : с. 265302/8 (8 назв.) ББК : 54 Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ Ключевые слова (''Своб.индексиров.''): нанокристаллические порошки--карбид вольфрама Аннотация: A model of high-energy ball milling of powders has been proposed. It is demonstrated that part of the energy is consumed for initiation of microstrains ε during milling and, hence, the process of the powder grinding is decelerated. An analytical expression has been deduced describing the size of nanocrystalline powder particles as a function of the milling time. The model and the experiment have been compared, using a powder of tungsten carbide (WC). The average size of the particles and the value of the microstrains in the ball-milled powder were determined by an x-ray method from broadening of diffraction reflections. The size of the particles was also evaluated using scanning electron microscopy and the sedimentation method Держатели документа: Центральная научная библиотека УрО РАН Доп.точки доступа: Kurlov, A. S.; Гусев Александр Иванович