Abstract
The structure and chemical durability of non-alkali aluminoborosilicate glasses with various contents of ZnO were investigated. As the replacement of MgO by ZnO increases from 0 to 3.2mol%, the average number of bridge oxygen per tetrahedron (BO/T) as a measure of network connectivity increases from 2.84 to 3.04, and the chemical durability improved. The weight loss ratio (WLR) of glass etched in 10vol% HF (20 °C, 20 min) solution decreased from 4.809 to 4.509, and in 5wt% NaOH (95 °C, 6 h) solution decreased from 1.201 to 0.994. The replacement of MgO by ZnO further increased to 6.4mol%, the value of BO/T decreased to 3.04 instead, and thus the chemical durability deteriorated. The WLR of HF-acid and NaOH-alkali corrosion increased to 6.683 and 1.994, respectively. The chemical durability shows strongly dependent on the network connectivity and exhibits mixed intermediate effects during the replacement of MgO by ZnO.
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 callMore From: Journal of Wuhan University of Technology-Mater. Sci. Ed.
Disclaimer: 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.
