Antimicrobial glass articles and methods of making and using same

摘要

Described herein are various antimicrobial glass articles that have improved resistance to discoloration when exposed to harsh conditions. The improved antimicrobial glass articles described herein generally include a glass substrate that has a low concentration of nonbridging oxygen atoms, a compressive stress layer and an antimicrobial silver-containing region that each extend inward from a surface of the glass substrate to a specific depth, such that the glass article experiences little-to-no discoloration when exposed to harsh conditions. Methods of making and using the glass articles are also described.

主权项

1. An antimicrobial glass article, comprising:
a glass substrate comprising a compressive stress layer that extends inward from a surface of the glass substrate to a first depth therein, and an antimicrobial silver-containing region that extends inward from the surface of the glass substrate to a second depth therein, wherein the glass article exhibits substantially no discoloration that is attributable to the presence of non-bridging oxygens upon exposure of the glass article to harsh conditions, wherein the harsh conditions are a gas mix of argon and oxygen and plasma generation at 50 W for 3 minutes, followed by a thermal treatment of 120° C. for about 30 minutes, and further wherein the glass substrate comprises a concentration of nonbridging oxygens of about 0.67 mol % to about 0.35 mol %.