Microstructure and properties of surface-modified tungsten powders mechanically activated in different media


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The results of an experimental-theoretical study of the effect of thin-film coatings on residual microstrains, microstresses, and local microdistortions of the atomic structure of powder tungsten mechanically activated in the centrifugal ball mill have been presented. It has been shown that microdistortions of the crystal structure of different system-hierarchical levels arise in the surface-oxidized powders, which increase with an increase in the time of the activation process. It has been shown that this should lead to a significant increase in the reactivity of the mechanically activated powder tungsten. In contrast, the adsorption films that plasticize the near-surface layer of particles can decrease the efficiency of the mechanoactivation process of the tungsten powder.

Sobre autores

V. Savenko

Frumkin Institute of Physical Chemistry and Electrochemistry

Autor responsável pela correspondência
Email: visavenko@rambler.ru
Rússia, Moscow, 119071

Yu. Toporov

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: visavenko@rambler.ru
Rússia, Moscow, 119071

V. Chernyshev

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: visavenko@rambler.ru
Rússia, Moscow, 119071

A. Malkin

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: visavenko@rambler.ru
Rússia, Moscow, 119071

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