The replacement of SiO2 in a sodium borosilicate system by a combination of HfO2 and Sc2O3 produced phase separable glasses. Such glasses have high heat resistance, and a higher working temperature than that of porous silica may therefore be expected.
Origin
National Institute For Materials Research, University Of Cape Town
Journal Title
Glass Technology 1988 29 1 31-34
Sector
Special Glass
Class
S 77