Crack-free monolithic lead titanate aerogels were prepared via a sol-gel process and drying in supercritical carbon dioxide. The material was characterized by thermogravimetric analysis, dilatometry, helium pycnometry, and X-ray diffraction. Skeletal densification was the main reason for the observed shrinkage of the heat-treated porous material at temperatures
Origin
Fraunhofer-Inst Fur Silicatforschung, Germany
Journal Title
J Am Ceram Soc 80 10 1997 2658-2666
Sector
Special Glass
Class
S 1248