| Project/Area Number |
25420792
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
Sukenaga Sohei 東北大学, 多元物質科学研究所, 助教 (20432859)
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| Co-Investigator(Renkei-kenkyūsha) |
Kim Kyung-Ho 東北大学, 多元物質科学研究所, 教育支援者 (30733589)
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| Research Collaborator |
Daniel Neuville パリ地球物理学研究所, 教授
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | ケイ酸塩融体 / 粘度 / 鉄イオン / 鉄シリケート融体 / ガラス転移温度 / レドックス / 酸化物ガラス / 高温融体物性 / 鉄シリケートスラグ / 過冷却液体 |
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| Outline of Final Research Achievements |
Influence of iron oxidation state on viscosity of sodium iron silicate melts was evaluated by a rotating crucible method. Also, Glass transition temperature of glassy samples were determined by Differential Scanning Calorimetry (DSC). These results shows viscosity of the melts increases with an increase in trivalent iron ions (Fe3+) both at temperatures above liquids and close to glass transition. Raman spectra of the glass samples indicates that trivalent iron ions are in part coordinated by 4 oxygen atoms and those tetrahedron acts as a network former. Moreover, these FeO4 tetrahedron increased with increasing oxygen partial pressure in the atmosphere. The increase in viscosity with increasing concentration of Fe3+ will be caused by an increase in polymerization degree of network structure.
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