dc.contributor.author
Oddone, Valerio
dc.contributor.author
Segl, Jakob
dc.contributor.author
Prakasam, Mythili
dc.contributor.author
Silvain, Jean-François
dc.contributor.author
Edtmaier, Christian
dc.contributor.author
Reich, Stephanie
dc.contributor.author
Hartmann, Martin T.
dc.date.accessioned
2019-05-06T07:55:39Z
dc.date.available
2019-05-06T07:55:39Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/24528
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-2292
dc.description.abstract
Light materials with high thermal conductivity and low thermal expansion have a wide application potential for the thermal management of high-performance electronics, in particular in mobile and aerospace applications. We present here metal matrix composites with a mixture of graphite flakes and pitch-based carbon fibres as filler. The production by spark plasma sintering orients the filler particles on to a plane perpendicular to the pressing axis. The obtained materials have lower density than aluminium combined with a thermal conductivity significantly outperforming the used metal matrix. Depending on the ratio of the filler components, a low thermal expansion along the pressing direction (high graphite flakes content) or across the pressing direction (high carbon fibre content) is achieved. For a 1:3 ratio of carbon fibres to graphite, we measured an isotropic reduction of the thermal expansion of the matrix by up to 55%. We present a detailed characterisation of composites with two aluminium alloys as matrix and an overview of the properties for six different metal matrices including magnesium and copper. With the goal of a technical application, we show that the described properties are intrinsic to the material compositions and are achieved with a wide spectrum of production methods.
en
dc.rights.uri
http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen
dc.subject
metal matrix composites
en
dc.subject
thermal conductivity
en
dc.subject
thermal expansion
en
dc.subject
carbon fibres
en
dc.subject.ddc
500 Natural sciences and mathematics::530 Physics::539 Modern physics
dc.title
Isotropic thermal expansion in anisotropic thermal management composites filled with carbon fibres and graphite
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1007/s10853-018-2373-6
dcterms.bibliographicCitation.journaltitle
Journal of Materials Science
dcterms.bibliographicCitation.number
15
dcterms.bibliographicCitation.pagestart
10910
dcterms.bibliographicCitation.pageend
10919
dcterms.bibliographicCitation.volume
53
dcterms.bibliographicCitation.url
http://link.springer.com/10.1007/s10853-018-2373-6
refubium.affiliation
Physik
refubium.affiliation.other
Institut für Experimentalphysik
refubium.note.author
Ber der PDF-Datei handelt es sich um eine Manuskriptversion des Artikels.
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
0022-2461 (Print)
dcterms.isPartOf.issn
1573-4803 (Online)