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Mathematical modeling and flow thermodynamics study of borosilicate glass melt after external addition of Cr2O3.

Authors :
Guo, Hongwei
Liu, Mi
Wang, Yi
Gao, Yibo
Guo, Shouyi
Buchanan, Relva C.
Source :
Ceramics International. Sep2024:Part A, Vol. 50 Issue 18, p32905-32911. 7p.
Publication Year :
2024

Abstract

This article uses a high-temperature sintering imaging instrument to test the flowability of borosilicate glass melt doped with Cr 2 O 3 , and establishes a mathematical model for high-temperature glass melt spreading. Discuss the glass melt from a thermodynamic perspective by combining model interpretation with experimental characterization. The results indicate that the thermodynamic judgment formula for high-temperature flow spreading of borosilicate glass is: Q ≥ ρ [ A 0 exp (− T / k 0) + S 0 ] − M · δ [ A 0 exp (− T / k 0) + S 0 ] 1 / 2 . To improve the high-temperature flow ability of borosilicate glass, it is necessary to increase the spreading activation energy Q. On the other hand, it is necessary to reduce the spreading coefficients A 0 、 k 0 and S 0. As a refractory metal oxide and active oxide, Cr 2 O 3 plays a role in reducing the spreading coefficient of glass systems. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02728842
Volume :
50
Issue :
18
Database :
Academic Search Index
Journal :
Ceramics International
Publication Type :
Academic Journal
Accession number :
178638542
Full Text :
https://doi.org/10.1016/j.ceramint.2024.06.101