Title:
OXIDE THERMISTOR AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2023/189826
Kind Code:
A1
Abstract:
The present invention provides an oxide thermistor having a smaller change in resistance value in high-temperature environments, and a method for manufacturing the oxide thermistor. The oxide thermistor according to the present invention is an oxide thermistor 1 having Mn and Co as main ingredients, with Cu furthermore added thereto, wherein the oxide thermistor 1 is densely sintered, and the crystal structure of the oxide thermistor 1 includes a cubic spinel phase 2, an NaCl-type crystal phase 3, and a cuprite-type crystal phase 4 that includes monovalent Cu and is in contact with or contained within the NaCl-type crystal phase. This method for manufacturing an oxide thermistor includes a calcinating step for calcining a mixture in which Mn, Co, and Cu are mixed, a molding step for molding the calcined mixture after the calcinating step into a compact, and a firing step for firing the compact and forming a sintered body, the firing step involving firing the compact at a temperature equal to or higher than the temperature at which the NaCl-type crystal phase precipitates, until the cuprite-type crystal phase precipitates together with the NaCl-type crystal phase.
Inventors:
YONEZAWA TAKEHIRO (JP)
FUJIWARA KAZUTAKA (JP)
FUJIWARA KAZUTAKA (JP)
Application Number:
PCT/JP2023/010905
Publication Date:
October 05, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
H01C7/04; H01C17/00
Foreign References:
| JPH07235405A | 1995-09-05 | |||
| JPH07211514A | 1995-08-11 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi (JP)
Download PDF: