THERMOELECTRIC CONVERSION MATERIAL, PRODUCTION METHOD THEREFOR AND THERMOELECTRIC CONVERSION ELEMENT

Title:

THERMOELECTRIC CONVERSION MATERIAL, PRODUCTION METHOD THEREFOR AND THERMOELECTRIC CONVERSION ELEMENT

Document Type and Number:

Japanese Patent JP2013179322

Kind Code:

A

Abstract:

To provide a thermoelectric conversion material which is not weathered, and exhibits high thermoelectric conversion characteristics stably at about 300-600°C, while having high physical strength and excellent durability, stability and reliability by using high purity silicon as a material, and to provide a thermoelectric conversion element and a production method for thermoelectric conversion material.

The thermoelectric conversion material is composed of a sintered compact principally comprising magnesium silicide (Mg₂Si) of polycrystalline structure, containing at least one element out of As, Sb, P, Al and B, as a dopant. Silicon component of the magnesium silicide is high purity silicon, and unreacting silicon and magnesium are not detected in the thermoelectric conversion material, and silicon oxide and magnesium oxide do not exist therein.

Inventors:

IIDA TSUTOMU
MITO HIROHIKO
NEMOTO TAKASHI

Application Number:

JP2013084990A

Publication Date:

September 09, 2013

Filing Date:

April 15, 2013

Export Citation:

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Assignee:

UNIV OF SCIENCE TOKYO
SHOWA KDE CO LTD
NIPPON THERMOSTAT KK

International Classes:

H01L35/20; B22F1/00; B22F3/00; B22F3/10; C22C23/00; H01L37/00

Domestic Patent References:

JP2005503025A	2005-01-27
JP2005133202A	2005-05-26
JP2002285274A	2002-10-03
JP2002076450A	2002-03-15
JP2006128235A	2006-05-18
JP2000054009A	2000-02-22
JP2002368291A	2002-12-20
JP2000269559A	2000-09-29

Foreign References:

WO2008075789A1	2008-06-26
WO1999022410A1	1999-05-06

Attorney, Agent or Firm:

Teruo Akimoto

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