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Properties of ZrO2, Gels Prepared by Controlled Chemical Modification Method of Alkoxide

Published online by Cambridge University Press:  25 February 2011

Hisao Suzuki ,
Hajime Saito  and
Hiroaki Hayashl
Hisao Suzuki
Affiliation:
Toyota Technological Institute, 2–12 Hisakata, Tempaku, Nagoya 468, Japan
Hajime Saito
Affiliation:
Toyota Technological Institute, 2–12 Hisakata, Tempaku, Nagoya 468, Japan
Hiroaki Hayashl
Affiliation:
Tsuchiya Co. Ltd., Chiryu Research Laboratory, 224 Higashinamikikita, Yama-machi, Chiryu 472, Japan
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Abstract

Polymeric ZrO2 gels were prepared by the controlled chemical modification method (CCM method) of zirconium-n-propoxide. In this method, the steric hindrance by alkoxide-acetic acid chelation could be used to control the hydrolysis and condensation reaction of the zirconium alkoxide if the amount of hydrolysis water was limited. As a result, polycondensaticn occurred uniformly in the solution, forming a linear zirconoxane polymer. When the solvent evaporated, the zirconoxane polymer crosslinked with each other and formed polymeric ZrO2, gels, which were monolithic and transparent. These polymeric gels could be re-dissolved into n-butyl alcohol with acetic acid and mechanical stirring. Heating would enhance the dissolution of the gels. Using the re-dissolved gel solution, dense thin films of ZrO2, could be obtained by dip-coating procedures without many coating operations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 271: Symposium N – Better Ceramics Through Chemistry V , 1992 , 83
Copyright
Copyright © Materials Research Society 1992

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References

REFERENCES

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