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Sol-gel synthesis of phosphate ceramic composites II

Published online by Cambridge University Press:  31 January 2011

Zhicheng Cao ,
Burtrand I. Lee ,
William D. Samuels ,
Li-Qiong Wang  and
Gregory J. Exarhos
Zhicheng Cao
Affiliation:
Department of Ceramic and Materials Engineering, Clemson University, Clemson, South Carolina 29634–0907
Burtrand I. Lee*
Affiliation:
Department of Ceramic and Materials Engineering, Clemson University, Clemson, South Carolina 29634–0907
William D. Samuels
Affiliation:
Battelle Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
Li-Qiong Wang
Affiliation:
Battelle Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
Gregory J. Exarhos
Affiliation:
Battelle Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
*
a) Author to whom correspondence should be addressed.
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Abstract

Phosphate ceramics were synthesized using sol-gel technique of direct reaction of P2O5 with tetraethoxy silane (TEOS) or titanium tetraethoxide (Ti(OEt)4). The reaction mechanism of P2O5 and TEOS was deduced using liquid and solid-state NMR. Hexacoordinated silicon in phosphosilicate gels was observed. A specially structured titanium phosphate-layered Ti(HPO4)2 · 2H2O was synthesized for the first time through the sol-gel method. The gelation process and phase transformations were investigated.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1553 - 1559
Copyright
Copyright © Materials Research Society 1998

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References

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