Chemical strengthening of Li+-containing phosphosilicate glass via a two-step ion-exchange process

Many studies have been conducted to improve the strength and damage resistance of phosphosilicate glasses via the introduction of Li 2 O through an appropriate ion-exchange process. However, very limited investigations can unveil the effect of the comprehensive mechanism of two-step ion-exchange pro...

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Bibliographic Details
Published in:Journal of the Australian Ceramic Society 2021-09, Vol.57 (4), p.1285-1290
Main Authors: Jiang, Qi, Yan, Jingtao, Wang, Ling, Chen, Chunyu, Smith, Andrew T., Sun, Luyi, Zeng, Huidan
Format: Article
Language:English
Subjects:
Ceramics
Chemistry and Materials Science
Composites
Glass
Inorganic Chemistry
Materials Engineering
Materials Science
Natural Materials
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Summary:Many studies have been conducted to improve the strength and damage resistance of phosphosilicate glasses via the introduction of Li 2 O 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 Li 2 O 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 Li 2 O 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.
ISSN:2510-1560
2510-1579
DOI:10.1007/s41779-021-00625-x