Evolution of the microstructure of disperse Zinc-oxide during tribophysical activation

The process of macro- and microstructural transformations of zinc-oxide powders, which were tribophysically activated by grinding in a vibro-mill was investigated using methods of transmission electron microscopy, infrared spectroscopy and X-ray. It is shown that tribophysical activation contributes...

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Bibliographic Details
Published in:Journal of materials science 1999-04, Vol.34 (7), p.1691-1697
Main Authors: KAKAZEY, M. G, MELNIKOVA, V. A, SRECKOVIC, T, TOMILA, T. V, RISTIC, M. M
Format: Article
Language:English
Subjects:
Activation
Agglomerated defects
Agglomerates
Chemistry
Coherent scattering
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Grinding mills
Materials science
Microstructure
Plates (structural members)
Polycrystals
Powders
Surface defects
Transmission electron microscopy
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Summary:The process of macro- and microstructural transformations of zinc-oxide powders, which were tribophysically activated by grinding in a vibro-mill was investigated using methods of transmission electron microscopy, infrared spectroscopy and X-ray. It is shown that tribophysical activation contributes to a gradual modification of the fine defect structure of zinc-oxide powders. In the starting stage agglomerates and bigger, longer particles are destroyed first of all. As a result of the formation of both volume and surface defects and changes of the character of interparticles interactions the plate-like polycrystal particles are created. They actually present sets of coherent scattering region.
ISSN:0022-2461
1573-4803
DOI:10.1023/A:1004553305665