US 12,319,612 B2
Salt bath compositions, salt bath systems, and processes for strengthening glass articles
John Steele Abbott, Jr., Horseheads, NY (US); Tonia Havewala Fletcher, Big Flats, NY (US); Sinue Gomez-Mower, Corning, NY (US); Kenneth Edward Hrdina, Horseheads, NY (US); and Daniel Arthur Sternquist, Horseheads, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Mar. 11, 2021, as Appl. No. 17/198,600.
Claims priority of provisional application 62/990,730, filed on Mar. 17, 2020.
Prior Publication US 2021/0292228 A1, Sep. 23, 2021
Int. Cl. C03C 21/00 (2006.01)
CPC C03C 21/002 (2013.01) 13 Claims
OG exemplary drawing
 
1. A salt bath system for strengthening glass article, the salt bath system comprising:
a molten salt bath tank defining an interior volume enclosed by at least one sidewall; and a salt bath composition within the interior volume and comprising:
from 90 wt. % to 99.5 wt. % of one or more alkali or alkaline earth metal salts based on the total weight of the salt bath composition; and
from 0.1 wt. % to 10 wt. % of silicic acid aggregates based on the total weight of the salt bath composition, wherein the silicic acid aggregates have an average size of from 50 μm to 400 μm.