Permanent magnet, motor, and generator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9714458
APP PUB NO 20160086702A1
SERIAL NO

14644406

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Abstract

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The embodiments provide a high-performance permanent magnet. The permanent magnet includes a sintered body having a composition expressed by a composition formula RpFeqMrCutCo100-p-q-r-t, with carbon in a range from 50 mass ppm to 1500 mass ppm. The sintered body also includes a metallic structure. The metallic structure includes a main phase having a Th2Zn17 crystal phase, and a secondary phase having a carbide phase of the M element of the composition formula. A ratio (I2/I1) of a maximum intensity I2 of a diffraction peak at an angle 2θ in a range from 37.5 degrees to 38.5 degrees to a maximum intensity I1 of a diffraction peak at the angle 2θ in a range from 32.5 degrees to 33.5 degrees is greater than 25 but no greater than 80 in an X-ray diffraction pattern obtained by applying an X-ray diffraction measuring method to the sintered body.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hagiwara, Masaya Kanagawa, JP 68 214
Horiuchi, Yosuke Tokyo, JP 72 272
Kobayashi, Tadahiko Kanagawa, JP 72 1519
Kobayashi, Tsuyoshi Kanagawa, JP 203 2224
Sakurada, Shinya Tokyo, JP 135 827
Sanada, Naoyuki Kanagawa, JP 28 71

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