科研之友
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摘要
Devices used to carry out mechanochemical transformations are described. The key views of the threshold mechanism of ultrafast mechanochemical synthesis in oxide systems with oxide melting points up to 3000 K in energy intensive mills are presented. Data on structural studies of complex oxides obtained by mechanochemical synthesis are analysed. The specific structural features of metastable complex oxides including high structure disorder, high vacancy concentration and inhomogeneous chemical composition are distinguished. It is shown that these features are responsible for the unusual properties of mechanochemically produced nanopowders. It is noted that currently mechanochemical synthesis is becoming a competitive method for the preparation of oxides and nanomaterials.
- 出版日期2008
