Permanent magnet alloy having improved heat resistance and process for production thereof
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United States of America Patent
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Nov 20, 2001
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N/A
app pub date -
Mar 20, 2000
filing date -
Jul 29, 1998
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Abstract
A permanent magnet alloy having an improved heat resistance comprising, in terms of % by atom, 0.1 to 15 at. % C, 0.5 to 15 at. % B, provided that C and B in total account for 2 to 30 at. %; 40% or less Co (exclusive), 0.5 to 5 at. % in total of Dy and Tb, 8 to 20 at. % R. where R represents at least one element selected from the group consisting of Nd, Pr, Ce, La, Y, Gd, Ho, Er, and Tm; with the balance being Fe and unavoidable impurities.
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