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1. WO2020067111 - THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION MODULE USING SAME, AND METHOD OF MANUFACTURING THERMOELECTRIC CONVERSION MATERIAL

Publication Number WO/2020/067111
Publication Date 02.04.2020
International Application No. PCT/JP2019/037494
International Filing Date 25.09.2019
IPC
H01L 35/18 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
35Thermoelectric devices comprising a junction of dissimilar materials, i.e. exhibiting Seebeck or Peltier effect with or without other thermoelectric effects or thermomagnetic effects; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
12Selection of the material for the legs of the junction
14using inorganic compositions
18comprising arsenic or antimony or bismuth
B22F 9/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
9Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
02using physical processes
04starting from solid material, e.g. by crushing, grinding or milling
C22C 1/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
04by powder metallurgy
C22C 33/02 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
H01L 35/34 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
35Thermoelectric devices comprising a junction of dissimilar materials, i.e. exhibiting Seebeck or Peltier effect with or without other thermoelectric effects or thermomagnetic effects; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
34Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
C22C 12/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
12Alloys based on antimony or bismuth
CPC
B22F 9/04
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
9Making metallic powder or suspensions thereof
02using physical processes
04starting from solid material, e.g. by crushing, grinding or milling
C22C 1/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
04by powder metallurgy
C22C 12/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
12Alloys based on antimony or bismuth
C22C 28/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
28Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
C22C 33/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
33Making ferrous alloys
02by powder metallurgy
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
Applicants
  • 日立金属株式会社 HITACHI METALS, LTD. [JP]/[JP]
Inventors
  • 松田 三智子 MATSUDA, Michiko
  • 島田 武司 SHIMADA, Takeshi
  • 神谷 欣宏 KAMITANI, Yoshihiro
Agents
  • 井上 誠一 INOUE, Seiichi
Priority Data
2018-18092526.09.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) THERMOELECTRIC CONVERSION MATERIAL, THERMOELECTRIC CONVERSION MODULE USING SAME, AND METHOD OF MANUFACTURING THERMOELECTRIC CONVERSION MATERIAL
(FR) MATÉRIAU DE CONVERSION THERMOÉLECTRIQUE, MODULE DE CONVERSION THERMOÉLECTRIQUE L'UTILISANT ET PROCÉDÉ DE FABRICATION DE MATÉRIAU DE CONVERSION THERMOÉLECTRIQUE
(JA) 熱電変換材料、およびそれを用いた熱電変換モジュール、並びに熱電変換材料の製造方法
Abstract
(EN)
A thermoelectric conversion material of the present invention comprises a sintered body including: a main phase including a plurality of crystal grains 101, 102, 103, 104 including Ce, Mn, Fe, and Sb and forming a skutterudite structure; and a grain boundary 105 between crystal grains adjacent to each other, the grain boundary including a sintering agent phase 106 including at least Mn, Sb, and O. Thus, with respect to a skutterudite-type thermoelectric conversion material including Sb, which is a sintering-resistant material, it is possible to improve sinterability while maintaining a practical dimensionless figure-of-merit ZT, and to reduce processing cost.
(FR)
Un matériau de conversion thermoélectrique de la présente invention comprend un corps fritté comprenant : une phase principale comprenant une pluralité de grains cristallins 101, 102, 103, 104 comprenant Ce, Mn, Fe et Sb et formant une structure de skutterudite ; et un joint de grain 105 entre des grains cristallins adjacents les uns aux autres, le joint de grain comprenant une phase d'agent de frittage 106 comprenant au moins Mn, Sb et O. Ainsi, par rapport à un matériau de conversion thermoélectrique de type skutterudite comprenant Sb, qui est un matériau résistant au frittage, il est possible d'améliorer l'aptitude au frittage tout en maintenant un facteur de mérite (ZT) sans dimension pratique, et de réduire le coût de traitement.
(JA)
本発明に係る熱電変換材料は、Ce、Mn、Fe、及びSbを含み、スクッテルダイト構造をなす複数の結晶粒101、102、103、104を有する主相と、隣接する前記結晶粒の間の粒界105と、を有する焼結体からなり、前記粒界には少なくともMn、Sb、及びOを含む焼結助剤相106を有する。このため、難焼結性材料であるSbを含むスクッテルダイト型熱電変換材料について、実用性のある無次元性能指数ZTを保ったまま、焼結性を向上させることができ、プロセスコストを低減することができる。
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