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US 12,676,256 B2Granted
Magnetic material, powder magnetic core, inductor, and method of manufacturing powder magnetic core
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsHironori Nagasaki, Junichi Kotani
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Abstract
A magnetic material includes an Fe—Si—Al-based metal magnetic powder. The Fe—Si—Al-based metal magnetic powder has the following relationships when the Si content is A % by weight and the Al content is B % by weight: 7.2% by weight≤A≤8.1% by weight, 6.0% by weight≤B≤7.5% by weight, and 2A+B≤22.7% by weight.
Claims7
A magnetic material comprising:
- an Fe—Si—Al-based metal magnetic powder,
- wherein the Fe—Si—Al-based metal magnetic powder has the following relationships when a Si content is A % by weight and an Al content is B % by weight:
- 7.2% by weight≤A≤8.1% by weight, 6.0% by weight≤B≤7.5% by weight, and 2A+B≤22.7% by weight.
A method of manufacturing a powder magnetic core, the method comprising:
- molding the powder magnetic core by pressure-molding a magnetic material including an Fe—Si—Al-based metal magnetic powder;
- and
- heating the powder magnetic core molded, at least 650° C. and at most 800° C.,
- wherein the Fe—Si—Al-based metal magnetic powder has the following relationships when a Si content is A % by weight and an Al content is B % by weight:
- 7.2% by weight≤A≤8.1% by weight, 6.0% by weight≤B≤7.5% by weight, and 2A+B≤22.7% by weight.
2 more elements
Dependencies are inferred from the claim text.