Why is Gorilla Glass so much stronger than other chemically strengthened glass?
July 10, 2012 2:04 PM Subscribe
How does the High Ion Exchange (HIE) process get such a deep compressive layer in the glass strengthening process used in Gorilla Glass?
posted by blurker to science & nature (2 answers total) 3 users marked this as a favorite
Normal chemically strengthened glass has a compressive layer that is on the order of 5 microns or so deep. Gorilla Glass, which is produced using Abrisa Technologies' HIE process claims a depth of greater than 40 microns
What is different about their process? All the chemical strengthening processes I've seen use a molten potassium bath to create the compressive layer, just like Abrisa. So how do they get the depth? Is their bath hotter? Do they keep the glass immersed for a much longer time?