Viscosity model for fully liquid silicate melt
A model for estimating the viscosity of silicate melt as derived in our previous paper is extended to the system containing MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, which can express the nonlinear variation of activation energy of viscosity with the composition. It is found that the optimized paramet...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Technical Faculty, Bor
2012-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200011Z.pdf |
| _version_ | 1818836731352317952 |
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| author | Zhang Guo-Hua Chou Kuo-Chih |
| author_facet | Zhang Guo-Hua Chou Kuo-Chih |
| author_sort | Zhang Guo-Hua |
| collection | DOAJ |
| description | A model for estimating the viscosity of silicate melt as derived in our previous paper is extended to the system containing MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, which can express the nonlinear variation of activation energy of viscosity with the composition. It is found that the optimized parameters of model which characterize the deforming ability of bonds around non-bridging oxygen decrease with increasing the bond strength of M-O bond expressed by I=2Q/RMz+ + rO2-)2 (where Q is the valence of cation M; r is the radius). It is pointed out that viscosity is not only determined by the bond strength, but also by the radius of cation which is defined as the size effect. The radius of cation plays paradox roles in the two factors: smaller radius leads to a stronger bond, thus a higher viscosity; while cations with smaller radius are easier to diffuse when neglecting the interaction force, thus a lower viscosity will be. |
| first_indexed | 2024-12-19T03:11:16Z |
| format | Article |
| id | doaj.art-ad102020122c4ff782dd54c9eb6f386d |
| institution | Directory Open Access Journal |
| issn | 1450-5339 |
| language | English |
| last_indexed | 2024-12-19T03:11:16Z |
| publishDate | 2012-01-01 |
| publisher | Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj.art-ad102020122c4ff782dd54c9eb6f386d2022-12-21T20:38:01ZengTechnical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392012-01-0148111010.2298/JMMB110922011ZViscosity model for fully liquid silicate meltZhang Guo-HuaChou Kuo-ChihA model for estimating the viscosity of silicate melt as derived in our previous paper is extended to the system containing MgO, CaO, SrO, BaO, Li2O, Na2O, K2O, which can express the nonlinear variation of activation energy of viscosity with the composition. It is found that the optimized parameters of model which characterize the deforming ability of bonds around non-bridging oxygen decrease with increasing the bond strength of M-O bond expressed by I=2Q/RMz+ + rO2-)2 (where Q is the valence of cation M; r is the radius). It is pointed out that viscosity is not only determined by the bond strength, but also by the radius of cation which is defined as the size effect. The radius of cation plays paradox roles in the two factors: smaller radius leads to a stronger bond, thus a higher viscosity; while cations with smaller radius are easier to diffuse when neglecting the interaction force, thus a lower viscosity will be.http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200011Z.pdfviscositynon-bridging oxygenbridging oxygenfree oxygen |
| spellingShingle | Zhang Guo-Hua Chou Kuo-Chih Viscosity model for fully liquid silicate melt Journal of Mining and Metallurgy. Section B: Metallurgy viscosity non-bridging oxygen bridging oxygen free oxygen |
| title | Viscosity model for fully liquid silicate melt |
| title_full | Viscosity model for fully liquid silicate melt |
| title_fullStr | Viscosity model for fully liquid silicate melt |
| title_full_unstemmed | Viscosity model for fully liquid silicate melt |
| title_short | Viscosity model for fully liquid silicate melt |
| title_sort | viscosity model for fully liquid silicate melt |
| topic | viscosity non-bridging oxygen bridging oxygen free oxygen |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200011Z.pdf |
| work_keys_str_mv | AT zhangguohua viscositymodelforfullyliquidsilicatemelt AT choukuochih viscositymodelforfullyliquidsilicatemelt |