Magnetic core loss of ultrahigh strength FeCo alloys
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Date
2003-05-15Author
Cheng, X.M.
Zhang, X.K.
Zhang, D.Z.
Lee, S.H.
Duckham, A.
Weihs, T. P.
Cammarata, R.C.
Chien, C.-L.
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Hiperco® 50 alloy heat treated between 450 and 650°C exhibits superior mechanical properties. We report the measurements of the ac core loss at various frequencies up to 4500 Hz of the Hiperco® 50 alloy samples annealed at 450 and 650°C. The 650°C annealed specimens have lower ac core loss than that of the 450°C annealed ones. The total core loss, consisting of contributions from hysteresis core loss and eddy-current core loss, depends on frequency f as af+bf2. The eddy-current loss of a single laminate is minor compared to the hysteresis loss.
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