Enthalpies of solution of framework aluminosilicate glasses xMl/nn+ AlO2‐(1‐x)SiO2 (M = Cs, Rb, K, Na, Li, Ba, Pb, Sr, Ca, Mg) in molten 2PbO.B2O3 near 973 K were measured. The sequence above represents increasing ability of the nonframework cation M to bond to the bridging oxygen. In that sequence, the enthalpy of the substitution Si4+→+ Al3++ 1/nMn+ in the glass becomes less exothermic, the enthalpy of vitrification increases, and the tendency toward glass‐glass immiscibility becomes more pronounced. These parameters correlate smoothly with the ionic potential, z/r, of the substituting cation.
|Original language||English (US)|
|Number of pages||5|
|Journal||Journal of the American Ceramic Society|
|State||Published - Sep 1984|
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry