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Physical and Structural Evolution of Sol-Gel Derived TiO2-SiO2 Glasses

Published online by Cambridge University Press:  25 February 2011

Yeu-Chyi CHENG  and
Larry L. Hench
Yeu-Chyi CHENG
Affiliation:
University of Florida, Advanced Materials Research Center, One Progress Blvd., #14, Alachua, FL 32615
Larry L. Hench
Affiliation:
University of Florida, Advanced Materials Research Center, One Progress Blvd., #14, Alachua, FL 32615
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Abstract

A method for producing large TiO2-SiO2 gel-glass monoliths using the sol-gel method has been developed. The gel-glasses are prepared by a pre-hydrolysis method using tetramethylorthosilicate and titanium isopropoxide as precursors. The microhardness, specific surface area and pore radius of the gel-glasses do not change significantly below 600°C. Above 600°C, these properties increase rapidly with densification temperature. At lower TiO2concentration, the glasses obtained by heating to 900°C for 15 hours were not crystallized, while for 15 wt % TiO2 glass, anatase precipitated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 121: Symposium H – Better Ceramics Through Chemistry III , 1988 , 593
Copyright
Copyright © Materials Research Society 1988

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References

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