Effect of Li2O on ion exchange depth and mechanical properties of cover glass
[Purposes]This paper aims to enhance the ion exchange depth and mechanical properties of the cover glass by selecting KNO3/NaNO3 as molten salt.[Methods]Aluminum-silicon cover glass was chemically strengthened by a low-temperature ion exchange method.Li2O was added to the glass formula for secondary strengthening of the glass.[Findings]The ion exchange depth of the glass can be significantly improved by adding Li2O to the glass formula while maintaining its excellent mechanical properties.Compared with the traditional low-temperature ion exchange method,secondary strengthening method not only improves glass performance but also avoids the high-temperature processes that may cause glass deformation and surface defects.[Conclusions]The lithium-aluminum-silicon cover glass prepared by adding Li2O for secondary strengthening demonstrates high impact resistance and other mechanical properties,showing a wide range of application prospects in the fields of aerospace,transportation,electronic products,and clean energy.
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