Chemical stability of soda-alumina-zirconia-silica glasses to Na, Na2S4, and S

Twenty-two glasses with a broad range of compositions, spanning the quaternary soda-alumina-zirconia-silica system, have been prepared to allow characterization of the various properties of the system. The glasses were characterized by their resistivities, energies of activation for conduction, and glass transition temperatures. The glasses were screened for compositions of especially high chemical stability of static corrosion tests in Na, S, and Na2S4 for 1000h at 4000C. Among the glasses tested, the high soda glasses showed the smallest weight change after exposure to the three media. The weight change observed was comparable to that seen in the Dow borate glass and beta'' alumina