Evaluation of the Thermoelectric Module Consisting of W-Doped Heusler Fe2VAl Alloy
| Autor: | H. Takazawa, Mizue Mizoshiri, Masashi Mikami, Tsunehiro Takeuchi, Kimihiro Ozaki, Yuichi Terazawa, Atsushi Yamamoto |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
business.industry Energy conversion efficiency Metallurgy Alloy Temperature cycling engineering.material Condensed Matter Physics Electronic Optical and Magnetic Materials Thermal conductivity Electricity generation Thermoelectric generator Powder metallurgy Materials Chemistry engineering Optoelectronics Electrical and Electronic Engineering business Power density |
| Zdroj: | Journal of Electronic Materials. 43:1922-1926 |
| ISSN: | 1543-186X 0361-5235 |
| Popis: | Power generation performance of a thermoelectric module consisting of the Heusler Fe2VAl alloy was evaluated. For construction of the module, W-doped Fe2VAl alloys were prepared using powder metallurgy process. Power generation tests of the module consisting of 18 pairs of p–n junctions were conducted on a heat source of 373–673 K in vacuum. The reduction of thermal conductivity and improvement of thermoelectric figure of merit by W-doping enhanced the conversion efficiency and the output power. High output power density of 0.7 W/cm2 was obtained by virtue of the high thermoelectric power factor of the Heusler alloy. The module exhibited good durability, and the relatively high output power was maintained after temperature cycling test in air. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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