METHODS OF MAKING ANTIMICROBIAL GLASS ARTICLES

摘要

Described herein are various methods and manufacturing methods for making antimicrobial and strengthened, antimicrobial glass articles and substrates. The methods described herein generally include contacting the article with a KNO3-containing molten salt bath set at about 380 C to about 460 C for about 30 minutes to about 24 hours to form a compressive stress layer that extends inward from a surface of the glass substrate to a first depth; and contacting the article comprising the compressive stress layer with a AgNO3-containing molten salt bath set at about 300° C. to about 400° C. for about 5 minutes to about 18 hours to form an antimicrobial region that extends inward from the surface of the glass substrate to a second depth. The methods also include poisoning at least the AgNO3-containing molten salt bath and, in some cases, the KNO3-containing molten salt bath. Poisoning components include Na+ and Li+ ions.

主权项

1. A method of making an antimicrobial glass article, the method comprising:
providing a glass substrate; contacting the glass substrate with a KNO3-containing molten salt bath for about 30 minutes to about 24 hours to form a compressive stress layer, wherein the KNO3-containing molten salt bath is set at a temperature of about 380° C. to about 460° C. and the compressive stress layer extends inward from a surface of the glass substrate to a first depth; providing an AgNO3-containing molten salt bath set at a temperature of about 300° C. to about 400° C.; poisoning the AgNO3-containing molten salt bath; and contacting the glass substrate comprising the compressive stress layer with the poisoned AgNO3-containing molten salt bath for about 5 minutes to about 18 hours to form an antimicrobial region, wherein the antimicrobial region extends inward from the surface of the glass substrate to a second depth.