Patent ID: 7497093

Claim:
A method of making an article, the method comprising: providing a substrate having an outer surface; providing at least a glass having an outer surface, wherein the glass comprises at least two different metal oxides, wherein the glass has a T g and T x , and wherein the difference between the T g and the T x of the glass is at least 5K, the first glass comprising one of a REO-Al 2 O 3 —ZrO 2 , Y 2 O 3 —Al 2 O 3 —ZrO 2 , REO-Al 2 O 3 —ZrO 2 —SiO 2 , Y 2 O 3 —Al 2 O 3 —ZrO 2 —SiO 2 , REO-Al 2 O 3 , or Y 2 O 3 —Al 2 O 3 composition, and the glass containing less than 20% by weight SiO 2 , less than 20% by weight B 2 O 3 , and less than 40% by weight P 2 O 5 ; heating the glass above the T g such that at least a portion of the glass wets at least a portion of the outer surface of the substrate and provides an article comprising the glass attached to the at least a portion of the outer surface of the substrate, wherein the heating of the glass is conducted in a gaseous atmosphere at a pressure greater than 1.1 atm. sufficient to increase the rate of densification of the glass as compared to the same glass heated in the same manner except the pressure during the later heating is conducted in an atmosphere at a pressure of 1.0 atm., and wherein the gaseous atmosphere at a pressure greater than 1.1 atm. is in direct contact with at least a portion of the outer surface of the glass.