Glass Strengthening Process
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Ionex® is suitable for most glasses, typically used in pharmaceutical, container, and cover glass for electronic devices. Increase usable strength by 50% to 800% over untreated glass.
Details
Suitable for most type-I borosilicate glasses, typically used in pharmaceutical, cosmetic container applications.
Also suitable for soda-lime or aluminosilicate cover glass for electronic display applications.
Treatment increases usable strength by 50% to 800% over the untreated glass.
High-CS Ionex®
In this version of Ionex®, the molten salt bath is treated with certain chemicals.
The added specific ions attach themselves to or embed themselves in the immediate surface layers to reduce the stress relaxation rate during the chemical strengthening process.
The result is the generation of 40 to 100 MPa surface compression (CS) in most cases.
In the figure below, it is shown that glass samples strengthened in a “normal” bath ("EN-0") generate 850 MPa CS.
Immediately after the bath is treated (event marked by the vertical green lines), the CS rises to roughly 900-910 MPa and remains at high values so long as the bath is periodically treated.
High-CS Ionex® technology may be particularly useful for strengthened cover glasses for personal mobile electronic devices.