Compositions – Electrically conductive or emissive compositions – Metal compound containing
Patent
1978-04-03
1980-07-29
Padgett, Benjamin R.
Compositions
Electrically conductive or emissive compositions
Metal compound containing
252518, 252521, 106 54, 427101, 428427, 428432, 338 21, H01B 106
Patent
active
042150205
ABSTRACT:
A vitreous enamel resistor material comprising a mixture of a glass frit, and fine particles of tin oxide (SnO.sub.2), a primary additive of particles of oxides of manganese, nickel, cobalt or zinc, and a supplemental additive of oxides of tantalum, niobium, tungsten or nickel. An electrical resistor is made from the resistor material by applying the material to a substrate and firing the coated substrate to a temperature at which the glass melts. The tin oxide may be heat treated prior to mixing the glass frit. Upon cooling, the substrate has on the surface thereof, a film of the glass having the particles of the mixture embedded therein and dispersed therethroughout. The resistor material provides a resistor having a wide range of resistivities and a low temperature coefficient of resistance.
REFERENCES:
patent: 3044901 (1962-07-01), Garnsworthy
patent: 3669907 (1972-06-01), Kohashi et al.
patent: 3888796 (1975-06-01), Nigol
patent: 3915721 (1975-10-01), Kamigaito et al.
patent: 4051074 (1977-09-01), Asada
patent: 4065743 (1977-12-01), Wahlers et al.
Merz Kenneth M.
Wahlers Richard L.
Barr J. Lloyd
Padgett Benjamin R.
Trachtman Jacob
TRW Inc.
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