SOL-GEL PROCESSING OF SiO2-B2O3 GLASSES.

Article abstract of DOI:10.1016/0025-5408(84)90175-2

Glasses from the SiO//2-B//2O//3 binary system containing up to 25 mole percent B//2O//3 have been synthesized. These glasses have been characterized by X-ray diffraction, optical transmission measurement, and IR absorption spectroscopy. In order to obtain a homogeneous glass, it was determined that a certain degree of hydrolysis of Si(OC//2H//5)//4 was essential before B(OC//2H//5)//3 could be incorporated. Optical transmission data exhibit characteristic absorption bonds related to Si, B, and OH fundamental and combination frequencies. IR absorption spectra in the 620-1700 cm** minus **1 range revealed the presence of absorption bands related to vibrations of O-Si-O, Si-O-Si, B-O, and Si-O-B bonds.