Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1993-01-21
1993-09-21
Bell, Mark L.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
252520, 501134, 501136, 338 22R, H01B 106
Patent
active
052466280
ABSTRACT:
Metal oxide group NTC theremistor material made from MnCO.sub.3 +NiO+CuO+Co.sub.3 O.sub.4 +FeO.sub.3 TiO.sub.2 group as a basic composition. The invention is characterized by metal oxide group thermistor material made from MnCO.sub.3 +NiO+ZnO+Co.sub.3 O.sub.4 +Fe.sub.2 O.sub.3 +TiO.sub.2 group or MnCO.sub.3 +NiO+CuO+ZnO+Fe.sub.2 O.sub.3 +TiO.sub.2 group as a basic composition having respectively composition amounts by weight for each ingredient described in the text. According to the invention, the sintering temperature of the material can be reduced relative to the conventional material, and therefore there is advantage that manufacturing expense of the thermistor can be reduced.
REFERENCES:
patent: 3015633 (1962-01-01), Humbert et al.
patent: 4347166 (1982-08-01), Tosaki et al.
patent: 4891158 (1990-01-01), Hata
Hong Ki Y.
Jung Hyung J.
Lee Jeon K.
Yoon Sang O.
Bell Mark L.
Gallo Chris
Korea Institute of Science & Technology
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