Method of manufacturing resistor paste

Details Method of manufacturing resistor paste Method of manufacturing resistor paste

1978-02-21

1979-11-20

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252520, H01B 108

Patent

active

041750616

ABSTRACT:
A method of manufacturing resistor paste having excellent voltage resistance properties, high resistivity and low TCR by fusing a mixture composed of 1 to 40 weight % of ruthenium dioxide, 40 to 85 weight % of lead oxide, 10 to 30 weight % of silica, 1 to 15 weight % of alumina and 0 to 5 weight % of another inorganic oxide at a temperature of 800.degree. to 1,200.degree. C., cooling and grinding the fused mixture, then adding a TCR modifier and an organic vehicle to the ground material, the TCR modifier being selected from the group consisting of 2 to 10 weight % ZrO.sub.2 ; 3 to 15 weight % of Al.sub.2 O.sub.3 ; 0.5 to 20 weight % of tin oxide and a mixture of 0.5 to 20 weight % of tin oxide and up to 15 weight % of Al.sub.2 O.sub.3, the sum of which does not exceed 25 weight % with respect to the total weight of the ground material and organic vehicle, and blending the admixture.

REFERENCES:
patent: 3304199 (1967-02-01), Faber, Sr. et al.
patent: 3778389 (1973-12-01), Kasanami et al.
patent: 3816348 (1974-06-01), Popowich
patent: 4076894 (1978-02-01), Langley et al.

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