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US 4,789,521 AGranted
Permanent magnet alloy
AssigneeCrucible Materials Corporation
InventorsKalathur S. V. L. Narasimhan, Bao-Min Ma
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Abstract
A rare-earth element permanent magnet alloy characterized by good magnetic alignment and high energy product, said magnet consisting essentially of, in atomic percent, at least one rare earth element didymium, mischmetal, neodymium and thorium 12 to 20, boron 4 to 14 and balance iron.
Claims1
A permanent magnet alloy consisting essentially of, in atomic percent, neodymium 8 to 15, thorium 6 to 10 with the total neodymium and thorium being within the range of 14 to 20, boron 4 to 14 and balance iron.
Dependencies are inferred from the claim text.