Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system
The effect of TiO2/SiO2 ratio from 0.28 to 0.54 on the structure and properties of the BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O low reaction slag were studied for high-Ti steel continuous casting at 1573K by molecular dynamics simulation, Raman spectroscopy and rotational viscometer. The results showed that...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028709 |
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| author | Hebin Jin Shuyao Yang Zhuo Chen Xubin Zhang Shengping He Qiangqiang Wang |
| author_facet | Hebin Jin Shuyao Yang Zhuo Chen Xubin Zhang Shengping He Qiangqiang Wang |
| author_sort | Hebin Jin |
| collection | DOAJ |
| description | The effect of TiO2/SiO2 ratio from 0.28 to 0.54 on the structure and properties of the BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O low reaction slag were studied for high-Ti steel continuous casting at 1573K by molecular dynamics simulation, Raman spectroscopy and rotational viscometer. The results showed that when TiO2/SiO2<0.44, TiVI in TiO2 mainly acts as a network modifier. When TiO2/SiO2>0.44, TiⅤ in TiO2 mainly plays the role of network forming body. As the TiO2/SiO2 ratio increases, the results revealed changes in the structures of bridging oxygen and TiⅤ, as well as the Si–O network. The NBO/T value increased from 2.84 to 3.98 and then decreased to 3.91. The viscosity of the slag decreased from 0.08 Pa s to 0.04 Pa s, and the complex QSi3 and QSi4 network structures were depolymerized. Subsequently, the degree of polymerization of the melt increased, and the viscosity increased to 0.08 Pa s due to the increase of number of bridge oxygen. |
| format | Article |
| id | doaj-art-a46693afdbfa41ed9ca3c93fbecc12a5 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-a46693afdbfa41ed9ca3c93fbecc12a52025-01-19T06:25:16ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134619626Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag systemHebin Jin0Shuyao Yang1Zhuo Chen2Xubin Zhang3Shengping He4Qiangqiang Wang5College of Materials Science and Engineering, and Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, ChinaCollege of Materials Science and Engineering, and Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, ChinaCollege of Metallurgical and Materials Engineering and Industrial Technology Research Institute, Jiangsu University of Science and Technology, Zhangjiagang, ChinaCollege of Materials Science and Engineering, and Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, ChinaCollege of Materials Science and Engineering, and Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; Corresponding author.College of Materials Science and Engineering, and Chongqing Key Laboratory of Vanadium-Titanium Metallurgy and Advanced Materials, Chongqing University, Chongqing, 400044, China; Corresponding author.The effect of TiO2/SiO2 ratio from 0.28 to 0.54 on the structure and properties of the BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O low reaction slag were studied for high-Ti steel continuous casting at 1573K by molecular dynamics simulation, Raman spectroscopy and rotational viscometer. The results showed that when TiO2/SiO2<0.44, TiVI in TiO2 mainly acts as a network modifier. When TiO2/SiO2>0.44, TiⅤ in TiO2 mainly plays the role of network forming body. As the TiO2/SiO2 ratio increases, the results revealed changes in the structures of bridging oxygen and TiⅤ, as well as the Si–O network. The NBO/T value increased from 2.84 to 3.98 and then decreased to 3.91. The viscosity of the slag decreased from 0.08 Pa s to 0.04 Pa s, and the complex QSi3 and QSi4 network structures were depolymerized. Subsequently, the degree of polymerization of the melt increased, and the viscosity increased to 0.08 Pa s due to the increase of number of bridge oxygen.http://www.sciencedirect.com/science/article/pii/S2238785424028709Mold fluxesMolecular dynamicsTiO2/SiO2 ratioAmphoteric oxideMicrostructure |
| spellingShingle | Hebin Jin Shuyao Yang Zhuo Chen Xubin Zhang Shengping He Qiangqiang Wang Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system Journal of Materials Research and Technology Mold fluxes Molecular dynamics TiO2/SiO2 ratio Amphoteric oxide Microstructure |
| title | Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system |
| title_full | Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system |
| title_fullStr | Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system |
| title_full_unstemmed | Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system |
| title_short | Effect of TiO2/SiO2 ratio on structure and properties of BaO–CaO–SiO2–TiO2–CaF2–Li2O–Na2O slag system |
| title_sort | effect of tio2 sio2 ratio on structure and properties of bao cao sio2 tio2 caf2 li2o na2o slag system |
| topic | Mold fluxes Molecular dynamics TiO2/SiO2 ratio Amphoteric oxide Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028709 |
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