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Title:
FERRITE POWDER, FERRITE RESIN COMPOSITE MATERIAL, AND ELECTROMAGNETIC SHIELDING MATERIAL, ELECTRONIC MATERIAL, OR ELECTRONIC COMPONENT
Document Type and Number:
WIPO Patent Application WO/2022/209640
Kind Code:
A1
Abstract:
Provided are a ferrite powder that inhibit magnetic loss at frequencies lower than 100 MHz, and when applied to a composite material or a composite body, is capable of preventing particles from coming off without loss of moldability and filling properties, a ferrite resin composite material, and electromagnetic shielding material, electronic material, or electronic component. This ferrite powder is a Mn-Zn ferrite powder containing at least spherical or polyhedral ferrite particles having a spinel phase as a main phase. The ferrite particles also have, at respective surfaces thereof, a step structure having a convex polygonal contour. Furthermore, the BET specific surface area of the ferrite powder is 0.35-10.00 m2/g, and the contained amount of the zinc oxide (ZnO) phase thereof is 0-0.8 mass%.

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Inventors:
KANEKO TATSUTO (JP)
AGA KOJI (JP)
Application Number:
PCT/JP2022/010101
Publication Date:
October 06, 2022
Filing Date:
March 08, 2022
Export Citation:
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Assignee:
POWDERTECH CO LTD (JP)
International Classes:
C01G49/00; C08K3/20; C08L101/00; H01F1/36; H01F1/37
Domestic Patent References:
WO2019065923A12019-04-04
WO2021070871A12021-04-15
WO2017212997A12017-12-14
WO2018061327A12018-04-05
Foreign References:
JP2015101509A2015-06-04
JP2015151287A2015-08-24
JP2017097252A2017-06-01
JP2015157727A2015-09-03
JP2011170272A2011-09-01
JPH04154869A1992-05-27
JP2016060682A2016-04-25
JP2006160560A2006-06-22
JPH04304700A1992-10-28
JP5921801B22016-05-24
Attorney, Agent or Firm:
SEKIGUCHI Masao (JP)
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