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Polucenie poroskov kompozicii HfO[2]-Dy[2]O[3]-Nb[2]O[5] metodami himiceskogo osazdenia iz rastvorov

Alesin D., Kartasov V., Ryckov V., Stuca M., Blinnicev A.

Czasopismo Techniczne. Mechanika

2008

R. 105, z. 2-M

9-17

The influence of conditions of precipitation of hydroxides on properties of HfO[2]-Dy[2]O[3]-Nb[2]O[5] powders was studied. The hydroxides were obtained by direct, inverse and simultaneous precipitation from hydrochloric solutions without employing surfactants and precursors. Optimal conditions for producing finely dispersed powders involve simultaneous precipitation of hydroxides at pH 6 followed by complete precipitation of dysprosium hydroxide at pH 10,5. For produced powders specific surface area, bulk density, mean particle size and phase composition were determined.