Mechanochemical Synthesis of Tantalates of Rare Earth Metals
VICTOR V. MOLCHANOV1, M. G. ZUEV2 and S. V. BOGDANOV1
1G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences,
Pr. Lavrentyeva 5, Novosibirsk 630090 (Russia), E-mail: molchanov@catalysis.nsk.su
2Institute of Solid State Chemistry, Ural centre of the Russian Academy of Sciences,
Ul. Pervomayskaya 91, Ekaterinburg 620219 (Russia)
Pages: 141-146
Abstract
The investigation of phase composition in Y2O3-Ta2O5 and La2O3-Ta2O5 systems is carried out at mechanical activation and subsequent heat treatment. In Y2O3-Ta2O5 system the interaction of components is observed during mechanical activation. Heating of mechanically activated intermixtures of oxides leads to the formation of orthotantalates of yttrium and lanthanum. Temperature and time of complete interaction of components is much less than in a traditional ceramic method. The new convenient method of synthesis of tantalates of rare-earth metals is developed.
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