Corning Incorporated
MAGNESIUM ALUMINOSILICATE GLASSES WITH HIGH FRACTURE TOUGHNESS

Abstract:

A glass composition includes: Si.sub.2O, greater than 0 mol % to less than or equal to 24 mol % Al.sub.2O.sub.3, B.sub.2O.sub.3, K.sub.2O, greater than or equal to 10 mol % to less than or equal to 38 mol % MgO, Na.sub.2O, and Li.sub.2O. The glass composition may have a fracture toughness of greater than or equal 0.80 MPa m and a Young's modulus of greater than or equal to 80 GPa to less than or equal to 120 GPa. The glass composition is chemically strengthenable. The glass composition may be used in a glass article or a consumer electronic product.