Thermodynamics for rare earth oxide and rare earth oxyfluoride and its application to recycling of rare earth wastes
| Project/Area Number |
24760612
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Metal making engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
TAKEDA Osamu 東北大学, 工学(系)研究科(研究院), 助教 (60447141)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 希土類 / レアアース / リサイクル / 酸化弗化物 / 熱力学データ / 標準生成ギブズ自由エネルギー変化 / 磁石 |
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| Research Abstract |
The purpose of this study is determining standard Gibbs free energy change of oxyfluoride of rare earths that is essential for the development of recycling process of rare earth sintered magnet. From a series of study, standard Gibbs free energy changes of oxyfluoride of lanthanum, neodymium, samarium, and dysprosium were determined. It was considered that the thermodynamic stability of oxyfluoride is greatly affected by the chemical affinity between rare earth cation and oxide ion.
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Report
(3 results)
Research Products
(11 results)
