GLASS FOR CHEMICAL STRENGTHENING AND CHEMICALLY STRENGTHENED GLASS

摘要

There are provide a glass for chemical strengthening suitable for a display member, having a low compaction and a high accuracy of film forming and patterning on a glass plate (causing less positional displacement) even in a glass plate manufactured by the fusion method or the like at a high cooling rate in glass forming, in a heat treatment at a low temperature (150° C. to 300° C.) in manufacturing the display member, and a chemically strengthened glass obtained using the glass for chemical strengthening. A glass for chemical strengthening obtained by melting and cooling a glass raw material includes, in mass percentage based on oxides, 61% to 75% of SiO2, 2.5% to 10% of Al2O3, 6% to 12% of MgO, 0.1% to 8% of CaO, 14% to 19% of Na2O, and 0% to 1.8% of K2O.

主权项

1. A glass for chemical strengthening obtained by melting and cooling a glass raw material, comprising, in mass percentage based on oxides,
61% to 75% of SiO2, 2.5% to 10% of Al2O3, 6% to 12% of MgO, 0.1% to 8% of CaO, 14% to 19% of Na2O, and 0% to 1.8% of K2O.