Potassium ion-exchange on surface of beta-spodumene

Details Potassium ion-exchange on surface of beta-spodumene Potassium ion-exchange on surface of beta-spodumene

1968-03-18

1978-02-21

Fisher, Richard V.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 33, 106 397, C03C 322, C03C 2100

Patent

active

040749932

ABSTRACT:
This invention relates to the strengthening of glass-ceramic articles wherein the crystal content thereof comprises the predominant portion and containing beta-spodumene solid solution as the principal crystal phase. The strengthening effect is accomplished through an ion exchange process taking place within a surface layer of the article such that potassium ions from an external source are exchanged for lithium ions in the crystal phase thereby causing compressive stresses to be set up in the surface layer.

REFERENCES:
patent: 2779136 (1957-01-01), Hood et al.
patent: 3218220 (1965-11-01), Weber
patent: 3282770 (1966-11-01), Stookey et al.
patent: 3482513 (1969-02-01), Denman
Kistler, S. S., "Stresses in Glass Produced by Non Uniform Exchange of Monovalent Ions", J. of Am. Cer. Soc., vol. 45, No. 2, pp. 59-68, Feb. 1962.

Affiliated with

Also associated with

Rating

Potassium ion-exchange on surface of beta-spodumene does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Potassium ion-exchange on surface of beta-spodumene, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Potassium ion-exchange on surface of beta-spodumene will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-123755