Method of manufacturing soft magnetic dust core

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12030122
APP PUB NO 20210031268A1
SERIAL NO

17075693

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Abstract

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Provided is a method of manufacturing a soft magnetic dust core. The method includes: preparing coated powder including amorphous powder made of an Fe-B-Si-P-C-Cu-based alloy, an Fe-B-P-C-Cu-based alloy, an Fe-B-Si-P-Cu-based alloy, or an Fe-B-P-Cu-based alloy, with a first initial crystallization temperature Tx1 and a second initial crystallization temperature Tx2; and a coating formed on a surface of particles of the amorphous powder; applying a compacting pressure to the coated powder or a mixture of the coated powder and the amorphous powder at a temperature equal to or lower than Tx1−100 K; and heating to a maximum end-point temperature equal to or higher than Tx1−50 K and lower than Tx2 with the compacting pressure being applied.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011 JAPAN
TOKIN CORPORATION1-1 ASAHI-CHO 7-CHOME SHIROISHI-SHI MIYAGI 989-0223
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYCHIYODA-KU TOKYO 100-8921

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanamori, Yu Sendai, JP 7 24
Muraki, Mineo Tokyo, JP 28 226
Nakamura, Naomichi Tokyo, JP 51 278
Nakaseko, Makoto Tokyo, JP 19 52
Okamoto, Koichi Sendai, JP 45 514
Ozaki, Kimihiro Nagoya, JP 21 58
Sato, Shoichi Sendai, JP 47 768
Takashita, Takuya Tokyo, JP 33 63
Terao, Hoshiaki Niigata, JP 9 44
Tsuda, Toshinori Sendai, JP 5 49
Urata, Akiri Sendai, JP 27 211
Wada, Raita Niigata, JP 4 25
Yamaki, Makoto Sendai, JP 19 34

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