Title:
RARE EARTH OXYSULFIDE COLD STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2018/025581
Kind Code:
A1
Abstract:
Provided is a cold storage medium having a large heat capacity in an extremely low temperature region of 10 K or less, and having excellent durability against thermal shock or mechanical vibration. Al2O3 having a specific surface area of 0.3-11 m2/g is added to this cold storage medium made using rare earth oxysulfide ceramics represented by general formula R2O2S (R represents one kind, or two or more kinds of rare earth elements selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, as well as Y).
Inventors:
YANAGITANI TAKAGIMI (JP)
NOZAWA HOSHITERU (JP)
NOZAWA HOSHITERU (JP)
Application Number:
PCT/JP2017/024919
Publication Date:
February 08, 2018
Filing Date:
July 07, 2017
Export Citation:
Assignee:
KONOSHIMA CHEMICAL (JP)
International Classes:
C09K5/14; C01F17/294; C04B35/50; F25B9/00
Domestic Patent References:
| WO2003081145A1 | 2003-10-02 |
Foreign References:
| JP2003213252A | 2003-07-30 | |||
| JP2005336240A | 2005-12-08 | |||
| JP2007223880A | 2007-09-06 | |||
| JP2004161839A | 2004-06-10 |
Other References:
See also references of EP 3495445A4
Attorney, Agent or Firm:
IWATANI Ryo (JP)
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