Graded Oxide Glasses in Binary Systems (Si−Ti, Si−V, and Si−Zr) Prepared by the Sol−Gel and Centrifugal Process

Abstract

The graded oxide glasses in binary oxide systems (Si−Ti, Si−V, and Si−Zr) had been prepared by means of a sol−gel method combined with centrifugal processing. In the Si−Ti and Si−V oxide systems, the graded oxide glasses, whose composition continuously changed with dimension in molecular scale, were prepared. The FT-IR analysis showed that infrared absorption peaks of Si−O−Si stretching and bending shifted, and Ti−O−Si or V−O−Si bands appeared with increasing the concentration of Ti or V, respectively. In the Si−Zr oxide system, the graded oxide glass in which the ZrO2 nanocrystals appeared in the high gravity region was prepared.