Anisotropic resistivity material and method of making same

Details Anisotropic resistivity material and method of making same Anisotropic resistivity material and method of making same

1988-12-15

1990-07-10

Albritton, C. L.

Electric heating

Metal heating

By arc

296101, 228125, 338334, 338314, B23K 2600

Patent

active

049408780

ABSTRACT:
A material which exhibits different electrical resistivity in mutually perpendicular directions is formed by providing a base member of one metal and covering a surface of the base member with a second metal of a different composition. Thereafter, multiple passes are made with a high energy beam over the surface of the second metal to form a plurality of alloyed zones in the base metal with the resistivity of the alloyed zones being different than that of the adjacent base metal.
A rotor for a dynamoelectric machine fabricated by such methods imparts a preferred direction to current flow to thereby eliminate large undesirable eddy currents and by tailoring the pattern of the higher resistivity zones, a machine may be provided which produces a self-compensating flux to minimize undesirable flux leakage common in such machines.

REFERENCES:
patent: 4468552 (1984-08-01), Morley

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