Title:
MAGNETIC REFRIGERANT MATERIAL AND AMR BED USING SAME, AND MAGNETIC REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/157735
Kind Code:
A1
Abstract:
Provided are: a magnetic refrigerant material which can be installed in an AMR-cycle-type magnetic refrigerator capable of being operated at a low temperature range of 10 to 80K and has high performance and high reliability; an AMR bed using the magnetic refrigerant material; and a magnetic refrigeration device employing the AMR bed. In examples of the present invention, the magnetic refrigerant material has an AlB2-type crystal structure, has a main phase comprising crystals each represented by a compositional formula: RB2 (wherein B represents boron; and R represents at least one rare earth element) or a solid solution of the crystals and subphases (comprising an R phase and/or an RB4 phase) dispersed finely in the main phase.
Inventors:
TAKANO YOSHIHIKO (JP)
TAKEYA HIROYUKI (JP)
TERASHIMA KENSEI (JP)
BAPTISTA DE CASTRO PEDRO (JP)
YAMAMOTO TAKAFUMI (JP)
SAITO AKIKO (JP)
TAKEYA HIROYUKI (JP)
TERASHIMA KENSEI (JP)
BAPTISTA DE CASTRO PEDRO (JP)
YAMAMOTO TAKAFUMI (JP)
SAITO AKIKO (JP)
Application Number:
PCT/JP2021/004463
Publication Date:
August 12, 2021
Filing Date:
February 05, 2021
Export Citation:
Assignee:
NAT INST MATERIALS SCIENCE (JP)
International Classes:
B22F1/00; C04B35/50; C04B35/58; F25B21/00; H01F1/01
Domestic Patent References:
| WO2015199139A1 | 2015-12-30 | |||
| WO2011039804A1 | 2011-04-07 |
Foreign References:
| JP2012067329A | 2012-04-05 | |||
| JP2015141016A | 2015-08-03 | |||
| JP2008277727A | 2008-11-13 | |||
| JPH03177083A | 1991-08-01 |
Attorney, Agent or Firm:
AIKAWA, Toshihiko (JP)
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