A composite material can include a grain component and a nanostructured grain boundary component. The nanostructured grain boundary component can be insulating and magnetic, so as to provide greater continuity of magnetization of the composite material. The grain component can have an average grain size of about 0.5-50 micrometers. The grain boundary component can have an average grain size of about 1-100 nanometers. The nanostructured magnetic grain boundary material has a magnetic flux density of at least about 250 mT. The grain component can comprise MnZn ferrite particles. The nanostructured grain boundary component can comprise NiZn ferrite nanoparticles. Core components and systems thereof can be manufactured from the composite material.

Claims

21 · 3 independent · depth 3

21 granted claims

›1.independentA composite material, comprising:na grain component having a magnetic ferrite phase; anda nanostructured magnetic grain boundary component that is bot…+5

›5.independentA method comprising:nproducing a composite material by sintering a mixed powder comprising a first particulate component and a second particulate comp…+10

›6.↳ 5The method of claim 5, wherein, in the mixed powder comprising a first particulate component and a second particulate component, the first particulate…d2

›13.↳ 5The method of claim 5, wherein, in the mixed powder comprising a first particulate component and a second particulate component, the second particulat…d2

›14.↳ 5The method of claim 5, wherein in the mixed powder comprising a first particulate component and a second particulate component, the second particulate…d2

›15.↳ 5The method of claim 5, wherein in the mixed powder comprising a first particulate component and a second particulate component, the first particulate …d2

›16.↳ 5The method of claim 5, further comprising producing the mixed powder, wherein in the mixed powder the first particulate component and the second parti…d2

›17.↳ 5The method of claim 5,nfurther comprising adding a binder to the mixture prior to sintering.d2+1

›19.↳ 5The method of claim 5, wherein prior to sintering, the mixed powder is shaped as a core component selected from the group consisting of a ferrite toro…d2

›20.↳ 5The method of claim 5, further comprising disposing the composite material in an apparatus selected from the group consisting of a transformer, an ele…d2

›21.↳ 5The method of claim 5, wherein, in the mixed powder comprising a first particulate component and a second particulate component, the ratio of the seco…d2

›9.independentA core component comprising a composite material, wherein the composite material comprises:na grain component having a magnetic ferrite phase; anda na…+3

Classifications

4 codes

IPC · International Patent Classification

Section C — Chemistry; metallurgy

C08K3/08
C08K7/16

Section H — Electricity

H01B3/10
H01B1/20

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Pendency

3.2 y

1,169 days filing → grant

Office actions

non-final + final

Responses

1 RCE

Examiner

Carol M Koslow

art unit 1734 · TC 1700

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Citations: 30 back · 0 forward

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Priority chain

2 priority documents

Priority

9 May 2011

earliest claimed

›Priority documents — 2

Type	Document	Date
provisional	US 61483922	9 May 2011
related publication	US 20120286920 A1	15 Nov 2012

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