Strengthening glass using coatings

Abstract

Compositions and methods of creating and applying coatings for strengthening glass substrates are made from precursors and additives that use an under-stoichiometric amount of water, for example, wherein a ratio of water in said additive to said precursor is equal or less than about 0.5 moles of water per mole alkoxy group in the precursor.

Description

technical field [0001] The present invention relates to compositions and methods for forming and applying coatings on glass substrates for the purpose of strengthening the glass substrates. Background technique [0002] Glass is very sensitive to mechanical stress. In theory, glass should be extremely strong given its structure. In practice, however, devices made of glass have lower strength and higher failure rates than expected due to mechanical imperfections, especially surface defects. Therefore, the damage rate is at least largely determined by the quality of the glass surface and edges. Unfortunately, these types of defects can shorten the life of the glass. [0003] Those skilled in the art have long sought ways to alleviate the problems associated with low glass strength. However, some of the improvements and methods of application that have been found have the adverse side effect of reducing the reliability of the strength of the glass in some cases. In some ca...

AI Technical Summary

Problems solved by technology

However, achieving a high failure strength does not ensure a high Weibull modulus, and maximizing the overall reliability of the glass requires both a high Weibull modulus and a high failure strength

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