Title:
熱電変換材料、熱電変換モジュールおよび熱電変換材料の製造方法
Document Type and Number:
Japanese Patent JP7283396
Kind Code:
B2
Abstract:
Provided is a thermoelectric conversion material having a high dimensionless figure of merit ZT, a thermoelectric conversion module, and a method for manufacturing a thermoelectric conversion material. A thermoelectric conversion material (1) according to the present invention includes: a large number of polycrystalline grains (11) which include a skutterudite-type crystal structure containing Yb, Co, and Sb; and an intergranular layer (12) which is between the neighboring polycrystalline grains (11) and includes crystals (13) in which an atomic ratio of O to Yb is more than 0.4 and less than 1.5. A method for manufacturing a thermoelectric conversion material according to the present invention includes: a weighing step (S1); a mixing step (S2); a ribbon preparation step (S3) by rapidly cooling and solidifying a melt of the raw materials by using a rapid liquid cooling solidifying method; a first heat treatment step (S4) including heat treating in an inert atmosphere with an adjusted oxygen concentration; a second heat treatment step (S5) including heat treating in a reducing atmosphere; and manufacturing the thermoelectric conversion material by a pressure sintering step (S6) in an inert atmosphere.
Inventors:
Takeshi Shimada
King Kusunoki
Michiko Matsuda
King Kusunoki
Michiko Matsuda
Application Number:
JP2019565129A
Publication Date:
May 30, 2023
Filing Date:
January 15, 2019
Export Citation:
Assignee:
Proterial Co., Ltd.
International Classes:
H10N10/853; B22D11/06; B22F1/00; B22F1/07; B22F1/142; B22F3/14; B22F9/04; H10N10/01; H10N10/857
Domestic Patent References:
| JP2016058558A | ||||
| JP2001135865A | ||||
| JP2013219095A | ||||
| JP2001185767A | ||||
| JP2013506312A |
Attorney, Agent or Firm:
Patent Attorney Corporation Isono International Patent and Trademark Office