Titania thermistor and method of fabricating

Details Titania thermistor and method of fabricating Titania thermistor and method of fabricating

1978-11-24

1980-06-24

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

29621, 73 27R, 338 14, 338 22SD, 338 23, H01C 700, G01N 702

Patent

active

042087864

ABSTRACT:
A high temperature thermistor and its method of fabrication are disclosed. The thermistor is fabricated from titanium dioxide ceramic forming material and is fabricated to achieve a high degree of densification approaching 100% of theoretical density. At elevated temperatures in the range of from about 700.degree. F. to about 1500.degree. F. densified titania ceramic material behaves as a semiconductor having a resistance which is responsive principally to the temperature of the thermistor element. The thermistor is fabricated by processing titania powder which includes a substantial majority of rutile phase material. The titania powder is processed to achieve a thermistor chip or member which demonstrates a high degree of density.

REFERENCES:
patent: 3186835 (1965-06-01), Bundy
patent: 3639132 (1972-02-01), Egerton
patent: 3699803 (1972-10-01), Sumi
patent: 3886785 (1975-06-01), Stadler
patent: 4007435 (1977-02-01), Tien
patent: 4029472 (1977-06-01), Micheli

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