Metalloceramic current-conducting material and a method for prep

Details Metalloceramic current-conducting material and a method for prep Metalloceramic current-conducting material and a method for prep

1974-08-28

1976-07-13

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Free metal containing

252518, 252519, 75206, 75224, 291825, H01B 102

Patent

active

039692787

ABSTRACT:
A sintered metalloceramic current-conducting material contains 60-80 per cent by weight of a of a nickel-chromium alloy as a current-conducting component; 17-35 per cent by weight of fully oxidized aluminium as an insulating component that serves also as a refractory filler material; and 3-5 percent by weight of a mixture of oxides of nickel and chromium which serves to separate particles of the nickel-chromium alloy and to increase the specific electric resistance of the material. The method for preparing the metalloceramic current-conducting material resides in that a powdered nickel-chromium alloy in an amount of 70-90 per cent by weight is mixed with aluminium powder in an amount of 10-30 per cent by weight to prepare a homogeneous mixture, which is then pressed and sintered at a temperature of 800.degree.-900.degree.C in air.

REFERENCES:
patent: 3309643 (1967-03-01), Ferretti et al.
patent: 3440042 (1969-04-01), Kaufmann
patent: 3533760 (1970-10-01), Weizenbach et al.

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