R-T-B based alloy strip, and R-T-B based sintered magnet and method for producing same

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United States of America Patent

PATENT NO 9620268
APP PUB NO 20140308152A1
SERIAL NO

14350438

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An R-T-B based alloy strip including columnar crystals of an R2T14B phase, wherein in a cross-section along the thickness direction, columnar crystals extend out in a radial fashion from the crystal nuclei, the R-T-B based alloy strip satisfying the following inequality (1), where D1 and D2 are, respectively, the average value for the lengths of the columnar crystals on one side and the average value for the lengths on the other side that is opposite the one side, in the direction perpendicular to the thickness direction of the cross-section.

description='In-line Formulae' end='lead'0.9/1.1≦D2/D1≦1.1/0.9  (1)description='In-line Formulae' end='tail'

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TDK CORPORATION2-5-1 NIHONBASHI CHUO-KU TOKYO 1036128 ?1036128

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishiyama, Tamotsu Tokyo, JP 13 69
Ishizaka, Chikara Tokyo, JP 44 270
Jingu, Nobuhiro Tokyo, JP 10 154
Kato, Eiji Tokyo, JP 111 1921
Tsubokura, Taeko Tokyo, JP 23 108

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