Abstract
Elastic moduli, fracture toughness, crack initiation resistance, and hardness are four important mechanical properties of oxide glasses. However, the correlation between them as well as their relations to glass composition and extrinsic factors are not yet fully understood. In this study, we investigate the variations in these mechanical properties in mixed ${\mathrm{Cs}}_{2}\mathrm{O}/{\mathrm{Li}}_{2}\mathrm{O}$-aluminoborate glasses, which are subjected to aging in a humid atmosphere. We observe pronounced nonlinear scaling of the mechanical properties due to the mixed alkali effect, and following the surface hydration, we observe an increase in crack resistance and a decrease in Vickers hardness. These variations are explained by Raman spectroscopy data collected at different depths within the hydrated surface. We found no clear relations between Vickers hardness, crack resistance, and fracture toughness, although Vickers hardness appears to increase and crack resistance appears to decrease with increasing fracture toughness for the present glass series. The glass with equal contents of Cs and Li provides the best compromise between high fracture toughness and Vickers hardness and with a potential to increase the crack resistance through humid aging.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
