WHITE, OPAQUE, ß-SPODUMENE GLASS-CERAMIC ARTICLES WITH INHERENT DAMAGE RESISTANCE AND METHODS FOR MAKING THE SAME

摘要

Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole%, include: 60-75 Si02; 10-18 A1203; 5-14 Li20; and 4.5 B203;. The glass-ceramics also have a Vickers initiation crack threshold of at least about 25 kgf.