Boroxol rings in SiO2–B2O3 glasses: Influence on low-temperature thermal properties

Richet, Pascal; Ataké, Tooru; Yamashita, Isao

doi:10.1016/j.jnoncrysol.2006.06.034

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…This result is consistent with the studies of Kim et al and Wang et al. According to previous studies, a certain amount of Si–O–B bonds exist in borosilicate glasses by NMR spectroscopy analysis. Therefore, the forming of Si–O–B bonds may lead to the average number of bridging oxygen increase .…”

Section: Resultssupporting

confidence: 93%

Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag

Zhang

Wang

et al. 2016

steel research int.

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The influence of Cr2O3 and B2O3 on viscosities of CaO–SiO2–MgO–23.2 wt% Al2O3–TiO2‐based slags is studied by the rotating cylinder method in this work. Furthermore, the Raman spectra of the quenched slags are also investigated to obtain the structure information of slags with different Cr2O3 and B2O3 contents. From the viscosity experimental results, it is indicated that the viscosity increased with the addition of Cr2O3 and decreased with the addition of B2O3. The Raman spectra analyses reveal that Cr2O3 may exist as a network former and the polymerization degree of the slags increases with the rising content of Cr2O3. B2O3 also behaves as network formers in the present slag, which can increase the degree of polymerization and polymerize the network structure of the slags. The effect of network forming on visicosity is smaller than the effect of low melting point compound formations, which leads to the slag viscosity decrease with B2O3 addition.

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Section: Resultssupporting

confidence: 93%

Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag

Zhang

Wang

et al. 2016

steel research int.

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“…The structure of B 2 O 3 –SiO 2 glasses has been studied extensively by many researchers, and it is well recognized that the basic structural units are BO 3 and SiO 4 and the linkages of B–O–B, Si–O–Si, and B–O–Si are formed 53–55 . There are, however, still discussions on the spatial structural homogeneity, i.e., nanoscale heterogeneous structure, in B 2 O 3 –SiO 2 glasses.…”

Section: Resultsmentioning

confidence: 99%

Electronic polarizability in silicate glasses by comparison of experimental and theoretical optical basicities

Komatsu

Dimitrov

Tasheva

et al. 2021

Int J of Appl Glass Sci

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The concept of optical basicity proposed by Duffy has been recognized as an extremely important issue in science and technology of glasses. In this article, the refractive index (n o )-based optical basicity Λ(n o ) of some binary and ternary silicate glasses was evaluated using the Lorentz-Lorenz formula, and the discrepancy between the values of Λ(n o ) and the theoretically calculated optical basicity Λ th was analyzed to understand more deeply the electronic polarizability in binary and ternary silicate glasses. A suitable value of the optical basicity for each oxide predicting a good quantitative composition dependence of optical basicity in a given glass system was proposed. The suitable value of SiO 2 for the prediction of the optical basicity of silicate glasses is Λ(SiO 2 glass) = 0.53, which is larger than the value of Λ(SiO 2 oxide) = 0.48 being used in the calculation of Λ th so far. Other suitable values such as Λ(Al 2 O 3 glass) = 0.62 and Λ(TiO 2 glass) = 1.04 were proposed. The relationship between the optical basicity and coordination structure in some oxides in silicate glasses was discussed.

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“…Furthermore, according to some studies on borosilicate glasses by X-ray photoelectron, Infrared, NMR spectroscopy and so on, there exists a certain amount of Si-O-B linkages in borosilicate and alkaline borosilicate glasses. 35,[41][42][43] It is proposed that the increase of bridging oxygen may be also due to the forming of Si-O-B structure groups.…”

Section: Discussionmentioning

confidence: 99%

Structure of CaO–B2O3–SiO2–TiO2 Glasses: a Raman Spectral Study

2011

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Development and application of fluorine free mould fluxes have been widely studied in recent years. Some research has shown that B2O3 and TiO2 are potential substitutes for F -in mold fluxes. In this study, Structure of CaO-B2O3-SiO2-TiO2 glass system has been studied by Raman spectroscopy. The influence of basicities (CaO/SiO2) and contents of B2O3 and TiO2 on the structure of CaO-B2O3-SiO2-TiO2 glasses were examined. Experimental results indicate that TiO2 exists in the system in the form of [TiO4] as network former in range of 0-15% in mass. The degree of polymerization of this system decreases with increase of basicities. The increase of B2O3 leads to more [BO4] tetrahedral units. It is concluded that both B2O3 and TiO2 behave as network forming oxides within the studied system.

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Boroxol rings in SiO2–B2O3 glasses: Influence on low-temperature thermal properties

Cited by 10 publications

References 17 publications

Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag

Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag

Electronic polarizability in silicate glasses by comparison of experimental and theoretical optical basicities

Structure of CaO–B2O3–SiO2–TiO2 Glasses: a Raman Spectral Study

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Boroxol rings in SiO2–B2O3 glasses: Influence on low-temperature thermal properties

Cited by 10 publications

References 17 publications

Influence of Cr2O3and B2O3on Viscosity and Structure of High Alumina Slag

Influence of Cr2O3and B2O3on Viscosity and Structure of High Alumina Slag

Electronic polarizability in silicate glasses by comparison of experimental and theoretical optical basicities

Structure of CaO–B2O3–SiO2–TiO2 Glasses: a Raman Spectral Study

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Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag

Influence of Cr₂O₃and B₂O₃on Viscosity and Structure of High Alumina Slag