Abstract
Many studies have been conducted to improve the strength and damage resistance of phosphosilicate glasses via the introduction of Li2O through an appropriate ion-exchange process. However, very limited investigations can unveil the effect of the comprehensive mechanism of two-step ion-exchange process on the mechanical properties of glass. Increasing the amount of Li2O in phosphosilicate glasses increases the hardness and decreases the depth of ion-exchange layers of other alkali ions. With a two-step ion-exchange treatment, the hardness of glass has been enhanced by 28.3% on average. Moreover, the phosphosilicate glass system was found to achieve the maximum compression stress on optimizing the Li2O content for a glass surface after the two-step ion-exchange treatment. The mechanism of strengthening the mechanical properties was then described using atomic packing theory. This investigation will pave the way for efficient composition design for phosphosilicate glasses to meet mechanical performance requirements of various display-related and engineering applications.
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This work was supported by the National Natural Science Foundation of China (NSFC 51872092, 52072122).
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Jiang, Q., Yan, J., Wang, L. et al. Chemical strengthening of Li+-containing phosphosilicate glass via a two-step ion-exchange process. J Aust Ceram Soc 57, 1285–1290 (2021). https://doi.org/10.1007/s41779-021-00625-x
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DOI: https://doi.org/10.1007/s41779-021-00625-x