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Synthesis of functional ceramic materials from aqueous solutions

Published online by Cambridge University Press:  31 January 2011

Takeshi Yao
Takeshi Yao
Affiliation:
Department of Fundamental Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida, Sakyo-ku, Kyoto-shi 606-01, Japan
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Abstract

Methods for synthesizing ceramic materials from aqueous solutions at ordinary temperature and pressure are advantageous because of the applicability to making films with wide areas and/or complicated shapes with no requirement of vacuum or high temperature, and because of lower cost. Powder of ZrO2 or LnMeO3 (Ln = La, Nd; Me = Cr, Mn, Fe, Co) perovskite was dissolved in hydrofluoric acid and a solution of fluoro-complex ions was obtained. Boric acid was added to the solution, the fluoride ions were consumed by the formation of BF4-, and then the fluoro-complex ions were hydrolyzed to ZrO2 or LnMeO3 in order to increase the amount of fluoride ions. A number of synthesized particles of ZrO2 or LnMeO3 were observed on the substrates in scanning electron microscope images.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 5 , May 1998 , pp. 1091 - 1098
Copyright
Copyright © Materials Research Society 1998

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