Method for manufacturing thermistor materials and thermistors

Details Method for manufacturing thermistor materials and thermistors Method for manufacturing thermistor materials and thermistors

1997-03-28

1999-03-09

Kunemund, Robert

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273762, 427101, 4271263, H01B 108

Patent

active

058797505

ABSTRACT:
The present invention relates a method for manufacturing high-temperature thermistor materials having stable thermistor properties and to a high-temperature thermistor. According to this method the thermistor material is obtained by mixing powders of (Mn.Cr) O.sub.4 spinel powder and Y.sub.2 O.sub.3 powder and firing the mixed powder at a temperature in a range of 1400.degree. to 1700.degree. C., so as to cause the components of the mixture to react with each other, thereby generating (Mn.sub.x.Cr.sub.y) O.sub.4 spinel and Y(Cr.Mn) O.sub.3 perovskite.

REFERENCES:
patent: 4110260 (1978-08-01), Yamamoto et al.
patent: 4891158 (1990-01-01), Hata
patent: 5568116 (1996-10-01), Iwaya et al.
patent: 5610111 (1997-03-01), Iwaya et al.
Patent Abstracts of Japan, vol. 14, No. 5, (E-869) Oct. 1989 re JP 01/253204.
Chemical Abstracts, vol. 109, No. 22, Nov. 1988, Abstract No. 203078 re JP 62/263606.

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