Composition and processing procedure for making thermistors

Details Composition and processing procedure for making thermistors Composition and processing procedure for making thermistors

1977-11-25

1979-11-20

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252520, 264 61, H01B 108

Patent

active

041750608

ABSTRACT:
A ceramic composition and processing procedure is described which is useful in electric and electronic devices such as thermistors. The ceramic composition, which may be described as a semiconducting barium titanate, exhibits a large positive temperature coefficient of resistance. Advantages are ease and convenience of fabrication with lower sintering temperature than conventional processing and use of an air atmosphere instead of nitrogen or oxygen atmospheres. This facilitates batch processing and permits convenient sintering in a continuous kiln.

REFERENCES:
patent: 3351568 (1967-11-01), Waseleski, Jr. et al.
patent: 3444101 (1969-05-01), Viernickel
patent: 3586642 (1971-06-01), Matsuo et al.
patent: 4014822 (1977-03-01), Fujikawa
patent: 4061583 (1977-12-01), Murata et al.

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