Thermoelectric conversion material, thermoelectric conversion module using the same, and manufacturing method of the same

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United States of America Patent

PATENT NO 9570667
APP PUB NO 20150122302A1
SERIAL NO

14597609

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Abstract

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According to an embodiment, a thermoelectric conversion material is made of a polycrystalline material which is represented by a composition formula (1) shown below and has a MgAgAs type crystal structure. The polycrystalline material includes a MgAgAs type crystal grain having regions of different Ti concentrations.

description='In-line Formulae' end='lead'(AaTib)cDdXe  Composition formula (1)description='In-line Formulae' end='tail'

wherein 0.2≦a≦0.7, 0.3≦b≦0.8, a+b=1, 0.93≦c≦1.08, and 0.93≦e≦1.08 hold when d=1; A is at least one element selected from the group consisting of Zr and Hf, D is at least one element selected from the group consisting of Ni, Co, and Fe, and X is at least one element selected from the group consisting of Sn and Sb.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA;TOSHIBA MATERIALS CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sawa, Takao Yokohama, JP 67 707

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