Development and Evaluation of High-Strength Fe2VAl Thermoelectric Module
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概要
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A thermoelectric module was constructed using p-type Fe2V0.9Ti0.1Al and n-type Fe2VAl0.9Si0.1 sintered alloys prepared by pulse-current sintering (PCS). The thermoelectric power factors of the p- and n-type materials were 1.6 and 4.1 mW/mK2, respectively, at 350 K. The bending fracture strength of the sintered alloy was 800 MPa and was 10 times higher than that of the Bi–Te alloy. These sintered alloys were connected in series with a copper electrode. The connection was induced by Joule heating at a high pressure without electrically conductive jointing materials, such as solder and Ag paste. The shear strength of the direct bonding was estimated to be 100 MPa. The electrical resistance of the bonding was negligibly small compared with that of the alloy. The estimated power density of the conventional pi-type unicouple was 378 mW/cm2. The maximum output power of the thermoelectric module consisting of 18 pairs of p–n junction was estimated to be 1.2 W on a hot plate at 573 K in air.
- 2008-03-25
著者
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Kobayashi Keizo
National Industrial Research Institute Of Nagoya Aist Miti
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Mikami Masashi
National Inst. Of Advanced Industrial Sci. And Technol.
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Kobayashi Keizo
National Institute of Advanced Industrial Science and Technology, 2266-98 Anagahora, Shimo-shidami, Moriyama, Nagoya 463-8560, Japan
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Kawada Tetsuya
ATSUMITEC Co., Ltd., 7111 Ubumi, Yuto, Hamamatsu 431-0192, Japan
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Kubo Kazuya
ATSUMITEC Co., Ltd., 7111 Ubumi, Yuto, Hamamatsu 431-0192, Japan
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Uchiyama Naoki
ATSUMITEC Co., Ltd., 7111 Ubumi, Yuto, Hamamatsu 431-0192, Japan
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Mikami Masashi
National Institute of Advanced Industrial Science and Technology, 2266-98 Anagahora, Shimo-shidami, Moriyama, Nagoya 463-8560, Japan
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