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

1990-05-31

1991-07-16

Albritton, C. L.

Electrical generator or motor structure

Dynamoelectric

Rotary

21912114, 21912164, 338334, H02K 122

Patent

active

050327526

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
patent: 4751417 (1988-06-01), Krinickas, Jr. et al.

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