Heating elements comprising a PTC ceramic article of a honeycomb

Details Heating elements comprising a PTC ceramic article of a honeycomb Heating elements comprising a PTC ceramic article of a honeycomb

1976-08-23

1977-06-28

Mayewsky, Volodymyr Y.

Electric heating

Heating devices

With heating unit structure

219553, 219381, 338 22R, 338283, 338323, 338327, 252518, H05B 308

Patent

active

040327523

ABSTRACT:
Heating elements comprising a ceramic article of a honeycomb structure having a positive temperature coefficient of electric resistance and composed of barium titanate are provided with channels, in which a pair of ohmic electrodes consisting mainly of silver as a metallic component and having a surface resistivity of the electrode per se of not more than 10 m.OMEGA./cm.sup.2 are provided on both end surfaces thereof and the ohmic electrodes are coated with an electrical insulating and thermostable material.

REFERENCES:
patent: 3163841 (1964-12-01), Willet
patent: 3927300 (1975-12-01), Wada et al.
patent: 3956614 (1976-05-01), Hervert
patent: 3982100 (1976-09-01), Hervert

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