2009 Fiscal Year Final Research Report
IMPROVEMENT OF THERMOELECTRIC PROPRTIES OF TiNiSn SYSTEM WITH HALF-HEUSLER TYPE STRUCTURE
| Project/Area Number |
19560705
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Nagasaki University |
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Principal Investigator |
HASAKA Masayuki Nagasaki University, 工学部, 教授 (30039698)
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| Co-Investigator(Kenkyū-buntansha) |
MORIMURA Takao 長崎大学, 大学院・生産科学研究科, 助教 (30230147)
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| Project Period (FY) |
2007 – 2009
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| Keywords | ハーフホイスラー / 熱電変換材料 / ゼーベック係数 / 過電子顕微鏡 / キャリア移動度 / フォノン散乱 / 性能指数 / 出力因子 |
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| Research Abstract |
Figure of merit and power factor in half-Heusler type alloys of the TiNiSn system changed complicatedly with kind and quantity of dopants, annealing temperature and period, phase structures and lattice defects, and atom occupations on each sub-lattice. Figure of merit and power factor were improved by addition of Zr, Hf on Ti sub-lattice, Cu on Ni sub-lattice, and Sb on Sn sub-lattice, by exceeding a stoichiometric composition of Ti, and by carrying out heat-treatment for 50 h at 1000-1100 K.
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Research Products
(10 results)
