| 摘要 |
PROBLEM TO BE SOLVED: To provide chemically and mechanically durable glass compositions and glass articles formed of the glass compositions.SOLUTION: In one embodiment, a glass composition may include about 70 mol% to about 80 mol% of SiO; about 3 mol% to about 13 mol% of alkaline earth oxide; X mol% of AlO; and Y mol% of alkali oxide. The alkali oxide may include NaO in an amount greater than about 8 mol%. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed of the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.SELECTED DRAWING: None |
