Method for forming thermistor thin film

Details Method for forming thermistor thin film Method for forming thermistor thin film

1992-11-30

1993-12-28

Beck, Shrive

Coating processes

Electrical product produced

Resistor for current control

4271263, 4271266, 427240, 4273762, 4274432, B05D 512

Patent

active

052737764

ABSTRACT:
A thermistor film is prepared by first preparing an alcohol solution is prepared by dissolving a metal compound in one or more kinds of polyvalent alcohols selected from the group consisting of ethylene glycol, diethylene glycol and glycerin. A coating solution is then prepared by adding and mixing an organic acid having a carboxyl group to the alcohol solution. The coating solution is coated on the surface of a heat-resistant substrate to form a coating film, the substrate on which the coating film is formed is dried and subjected to heat treatment to form a composite oxide precursor containing a metal of the above metal compound, and the precursor is calcined at a temperature of 600.degree. to 1000.degree. C. The method of the present invention can form a thermistor thin film which is dense and uniform over a wide range by simple and easy operations at a low cost.

REFERENCES:
patent: 2596284 (1952-05-01), Peters
patent: 3061476 (1958-04-01), Miserocchi
patent: 3364565 (1968-01-01), Sapoff et al.
patent: 4066564 (1978-01-01), Sasazawa et al.
patent: 4369105 (1983-01-01), Caldwell et al.
patent: 4837046 (1989-06-01), Oishi et al.

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