Mixed Alkali-zinc Effects on Thermo-mechanical Properties in Borosilicate Glasses

A series of mixed alkali-zinc borosilicate glasses with various r values ( r = molar ratio of [ZnO] / ([R 2 O]+[ZnO])) from 0.00 to 1.00 were fabricated to probe the mixed alkali-zinc effects on thermo-mechanical properties. The nonlinear evolution of glass transition temperature ( T g ) with the ad...

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Bibliographic Details
Published inJournal of Wuhan University of Technology. Materials science edition Vol. 39; no. 5; pp. 1093 - 1099
Main Authors Xiao, Guanzhou, Tao, Yunhang, Zhou, Hemin, Zheng, Qingshuang, Qiao, Ang, Tao, Haizheng
Format Journal Article
LanguageEnglish
Published Wuhan Wuhan University of Technology 01.10.2024
Subjects
Advanced Materials
Chemistry and Materials Science
Materials Science
elastic moduli
borosilicate glass
coefficient of thermal expansion
glass transition temperature
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Summary:A series of mixed alkali-zinc borosilicate glasses with various r values ( r = molar ratio of [ZnO] / ([R 2 O]+[ZnO])) from 0.00 to 1.00 were fabricated to probe the mixed alkali-zinc effects on thermo-mechanical properties. The nonlinear evolution of glass transition temperature ( T g ) with the addition of ZnO is ascribed to the competition of two converse factors, i e , the T g depression as one of the colligative properties for a solution, on the one hand, and the enhancement of T g due to the higher field strength of zinc cations compared to that of alkali ions. However, the nonlinear evolution of elastic moduli and coefficients of thermal expansion with r is attributed to the variance of intermediate-range clusters, which is confirmed by infrared and Raman scattering spectra. These findings are very helpful in tailoring the performance of borosilicate glasses.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-024-2975-6