THERMOELECTRIC CONVERSION MATERIAL

Title:

THERMOELECTRIC CONVERSION MATERIAL

Document Type and Number:

WIPO Patent Application WO/2016/185852

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a thermoelectric conversion material which comprises a full Heusler alloy and with which the performance coefficient can be improved. In order to solve the above problem, provided is a thermoelectric conversion material comprising a full Heusler alloy represented by composition formula (Fe1-xM1x) 2+σ (Ti1-yM2y) 1+φ (A1-zM3z) 1+ω. In the Fe-Ti-A ternary phase diagram, the composition is within a hexagon formed by peaks at (50, 37, 13), (45, 30, 25), (39.5, 25, 35.5), (50, 14, 36), (54, 21, 25) and (55.5, 25, 19.5). Moreover, the amount of change ∆VEC in the average electron number VEC in terms of x = y = z = 0 satisfies 0 <│∆VEC│ < 0.2 or 0.2 <│∆VEC│< 0.3.

Inventors:

NISHIDE AKINORI (JP)
FUKATANI NAOTO (JP)
HAHAKAWA JYUN (JP)
YABUCHI SHIN (JP)
KUROSAKI YOSUKE (JP)

Application Number:

PCT/JP2016/062315

Publication Date:

November 24, 2016

Filing Date:

April 19, 2016

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)

International Classes:

H01L35/14; C22C38/00; B22F3/14

Domestic Patent References:

WO2013093967A1	2013-06-27
WO2013175571A1	2013-11-28

Foreign References:

JP2015005653A	2015-01-08
JP2010226034A	2010-10-07
US20120032105A1	2012-02-09

Other References: