Accession Number:

ADA199905

Title:

Ultrastructure Processing and Environmental Stability of Advanced Structural and Electronic Materials

Descriptive Note:

Final rept. 1 Apr 1985-31 Mar 1988

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1988-09-01

Pagination or Media Count:

38.0

Abstract:

The objective of our Multi-Investigator Research Program is to achieve an understanding of the science of chemically derived, ultrastructure processing of ceramics, glasses and composites. Five research areas were pursued. Sol-Gel Processing Procedures for reliable and reproducible drying of sol-gel silica monoliths were developed using drying control chemical additives DCCAs. Processes for chemical stabilization of ultraporous, optically transparent silica monoliths were also developed along with the means for chemically doping of optically active polymers. A method for dehydration and densification of the ultrapure silica monoliths was also achieved resulting in optical components with uniquely low optical transmission from 160 nm to 3500 nm. The gel-derived optical silica also has a uniquely low coefficient of thermal expansion over a broad temperature range. Keywords Glass, Surfaces, Optics, Ultrastructure, Infrared reflection spectroscopy, Microstructure, Gels, Gel-glass transformation, Electrokinetics, Processing, Composites, Silica, Silicon.

Subject Categories:

  • Ceramics, Refractories and Glass

Distribution Statement:

APPROVED FOR PUBLIC RELEASE