EFFECTIVE VISCOSITY AND GLASS TRANSITION TEMPERATURE OF Cs 2 O–B 2 O 3  MELTS

A. A. Khokhryakov; Хохряков А. А.; M. A. Samoilova; Самойлова М. А.; V. V. Ryabov; Рябов В. В.; L. B. Vedmid’; Ведмидь Л. Б.

doi:10.31857/S0235010623060026

EFFECTIVE VISCOSITY AND GLASS TRANSITION TEMPERATURE OF Cs₂O–B₂O₃ MELTS

Authors: Khokhryakov A.A.¹, Samoilova M.A.¹, Ryabov V.V.¹, Vedmid’ L.B.¹
Affiliations:
1. Institute of Metallurgy UB RAS
Issue: No 6 (2023)
Pages: 614-623
Section: Articles
URL: https://ruspoj.com/0235-0106/article/view/661231
DOI: https://doi.org/10.31857/S0235010623060026
EDN: https://elibrary.ru/AMCTGI
ID: 661231

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Abstract
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Abstract

Effective viscosity (viscoelasticity) of cesium and boron oxides melts was measured at temperatures 900–1600 K and concentrations 0 ≤ x ≤16 mol % Cs₂O by vibration viscosimetry. It was shown that vibration leads to non-Newtonian flow of melts. This means that not only configuration activation energy, the switching energy of bridging oxygen bonds but also the elastic energy of structural units of melts associated with activation energy of viscous flow. Using parameters under conditions of Newtonian and non-Newtonian flow of melts, shear viscosity η', elastic modulus G' and stored viscosity η'' were calculated. It was shown that cesium boron melts in conditions of high shear rates can be considered as liquids with viscous and elastic properties. Glass transition temperature (T_g, K) was measured by DSC, its dependence of content of cesium oxide was plotted and explained.

Keywords

cesium-boron melt, effective viscosity, non-Newtonian flow, Reynolds number, glass transition temperature

References

Li P.Ch., Ghose A.C., Su G.J. Density of molten boron oxide, rubidium, and cesium borates // Phys. Chem. Glasses. 1960. 1. № 6. Р. 198–204.
Visser T.J.M., Stevels J.M. // J. Non-Cryst. Solids. 1972. 7. № 4. P. 376–394. https://doi.org/10.1016/0022-3093(72)90272-4
Solov’yev A.N., Kaplun A.B. Vibratsionnyy metod izmereniya vyazkosti zhidkostey [Vibration method for measuring the viscosity of liquids]. Novosibirsk: Nauka, 1970. [In Russian].
Shtangel’meyyer S.V. // Zavodskaya laboratoriya. 1968. № 6. P. 764. [In Russian].
Kirsanov Ye.A. Nen’yutonovskiye zhidkosti [Non-Newtonian fluids]. Tekhnosfera. Moskva. 2016. [In Russian].
Melchakov S.Yu., Khokhryakov A.A., Samoilova M.A., Ryabov V.V., Yagodin D.A. // Glass Physics and Chemistry. 2022. 48. P. 174–179. https://doi.org/10.1134/S1087659622030063
Khokhryakov A.A., Melchakov S.Yu., Samoilova M.A., Ryabov V.V. // Inorganic materials. 2022. 58. P. 538–543. https://doi.org/10.1134/S0020168522050053
Khokhryakov A.A., Samoilova M.A., Ryabov V.V., Vedmid’ L.B., Melchakov S.Yu. // Phys. Chem. Glasses 2023. 49. № 3. P. 239–244. https://doi.org/10.1134/S1087659623600102
Yiannopolous Y.D., Chryssikos G.D., Kamitsos E.I. Structure and properties of alkaline earth borate glasses // Phys. Chem. Glasses. 2001. 42. P. 164–172.
Kojima S. // Solids. 2020. № 1. P. 16–30. https://doi.org/10.3390/solids1010003
Berryman J.R., Feller S.A., Affatigatto M., Kodama M., Meyer B.M., Martin S.W., Borsa F., Kroeker S. // J. Non-Cryst. Solids. 2001. 293–295. P. 483–489. https://doi.org/10.1016/S0022-3093(01)00754-2
Franz H. Effect of water content on density, refractive index and transformation temperature of alkali borate glasses. PPG Industries, Inc., Glass Research Center.
Osipov A.A., Osipova L.M., Bykov V.N. Spektroskopiya struktury i shchelochnoboratnykh stekol i rasplavov [Spectroscopy and structure of alkaline borate glasses and melts]. Yekaterinburg–Miass. UrO RAN, 2009. [In Russian].
Chryssikos G.D., Kamitsos E.I., Karakassides M.A. Structure of borate glasses: 2. Alkali induced network modifications in terms of structure and properties // Phys. Chem. Glasses. 1990. 31. № 3. Р. 109–116.
Osipov A.A., Osipova L.M. Struktura stekol i rasplavov sistemy Cs2O–B2O3 polucheny po dannym spektroskopii kombinatsionnogo rasseyaniya sveta [The structure of glasses and melts of the Cs2O–B2O3 system according to Raman spectroscopy data] // Fizika i khimiya stekla. 2014. 40. № 4. P. 521–534. [In Russian].
Shaw R.R., Uhlmann D.R. Subliquidus immiscibility in binary alkali borates // J. Am. Ceram. Soc. 1968. 51. Р. 377–382.
Osipov A.A., Osipova L.M. // Advances in Condensed Matter Physics. 2018. P. 1–8. https://doi.org/10.1155/2018/6746023