Multiscale Copper-uDiamond Nanostructured Composites
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.9/2414 |
Resumo: | Nanostructured copper-diamond composites can be tailored for thermal management applications at high temperature. A novel approach based on multiscale diamond dispersions is proposed for the production of this type of materials: a Cu-nDiamond composite produced by high-energy milling is used as a nanostructured matrix for further dispersion of micrometer sized diamond. The former offers strength and microstructural thermal stability while the latter provides high thermal conductivity. A series of Cu-nDiamond mixtures have been milled to define the minimum nanodiamond fraction suitable for matrix refinement and thermal stabilization. A refined matrix with homogenously dispersed nanoparticles could be obtained with 4 at.% nanodiamond for posterior mixture with ƒÝDiamond and subsequent consolidation. In order to define optimal processing parameters, consolidation by hot extrusion has been carried out for a Cu-nDiamond composite and, in parallel, for a mixture of pure copper and ÝDiamond. The materials produced were characterized by X-ray diffraction, scanning and transmission electron microscopy and microhardness measurements. |
id |
RCAP_6afc8ace06c799351813425326c6b79f |
---|---|
oai_identifier_str |
oai:repositorio.lneg.pt:10400.9/2414 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Multiscale Copper-uDiamond Nanostructured CompositesCompositesExtrusionHigh energy millingMicrodiamondNanodiamondNanostructured copper-diamond composites can be tailored for thermal management applications at high temperature. A novel approach based on multiscale diamond dispersions is proposed for the production of this type of materials: a Cu-nDiamond composite produced by high-energy milling is used as a nanostructured matrix for further dispersion of micrometer sized diamond. The former offers strength and microstructural thermal stability while the latter provides high thermal conductivity. A series of Cu-nDiamond mixtures have been milled to define the minimum nanodiamond fraction suitable for matrix refinement and thermal stabilization. A refined matrix with homogenously dispersed nanoparticles could be obtained with 4 at.% nanodiamond for posterior mixture with ƒÝDiamond and subsequent consolidation. In order to define optimal processing parameters, consolidation by hot extrusion has been carried out for a Cu-nDiamond composite and, in parallel, for a mixture of pure copper and ÝDiamond. The materials produced were characterized by X-ray diffraction, scanning and transmission electron microscopy and microhardness measurements.Trans. Tech. PublicationsRepositório do LNEGNunes, D.Livramento, VanessaFernandes, H.Silva, C.Shohoji, NobumitsuCorreia, J.B.Carvalho, Patricia Almeida2014-04-15T14:38:48Z2013-01-01T00:00:00Z2013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/2414engNunes, D.; Livramento, V.; Fernandes, H.; Silva, C.; Shohoji, N.; Correia, J.B.; Carvalho, P.A. Multiscale Copper-uDiamond Nanostructured Composites. In: Materials Science Forum, 2013,Vol. 730-732, p. 925-9301662-9752info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:27:25Zoai:repositorio.lneg.pt:10400.9/2414Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:35:18.687297Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Multiscale Copper-uDiamond Nanostructured Composites |
title |
Multiscale Copper-uDiamond Nanostructured Composites |
spellingShingle |
Multiscale Copper-uDiamond Nanostructured Composites Nunes, D. Composites Extrusion High energy milling Microdiamond Nanodiamond |
title_short |
Multiscale Copper-uDiamond Nanostructured Composites |
title_full |
Multiscale Copper-uDiamond Nanostructured Composites |
title_fullStr |
Multiscale Copper-uDiamond Nanostructured Composites |
title_full_unstemmed |
Multiscale Copper-uDiamond Nanostructured Composites |
title_sort |
Multiscale Copper-uDiamond Nanostructured Composites |
author |
Nunes, D. |
author_facet |
Nunes, D. Livramento, Vanessa Fernandes, H. Silva, C. Shohoji, Nobumitsu Correia, J.B. Carvalho, Patricia Almeida |
author_role |
author |
author2 |
Livramento, Vanessa Fernandes, H. Silva, C. Shohoji, Nobumitsu Correia, J.B. Carvalho, Patricia Almeida |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório do LNEG |
dc.contributor.author.fl_str_mv |
Nunes, D. Livramento, Vanessa Fernandes, H. Silva, C. Shohoji, Nobumitsu Correia, J.B. Carvalho, Patricia Almeida |
dc.subject.por.fl_str_mv |
Composites Extrusion High energy milling Microdiamond Nanodiamond |
topic |
Composites Extrusion High energy milling Microdiamond Nanodiamond |
description |
Nanostructured copper-diamond composites can be tailored for thermal management applications at high temperature. A novel approach based on multiscale diamond dispersions is proposed for the production of this type of materials: a Cu-nDiamond composite produced by high-energy milling is used as a nanostructured matrix for further dispersion of micrometer sized diamond. The former offers strength and microstructural thermal stability while the latter provides high thermal conductivity. A series of Cu-nDiamond mixtures have been milled to define the minimum nanodiamond fraction suitable for matrix refinement and thermal stabilization. A refined matrix with homogenously dispersed nanoparticles could be obtained with 4 at.% nanodiamond for posterior mixture with ƒÝDiamond and subsequent consolidation. In order to define optimal processing parameters, consolidation by hot extrusion has been carried out for a Cu-nDiamond composite and, in parallel, for a mixture of pure copper and ÝDiamond. The materials produced were characterized by X-ray diffraction, scanning and transmission electron microscopy and microhardness measurements. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01T00:00:00Z 2013-01-01T00:00:00Z 2014-04-15T14:38:48Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.9/2414 |
url |
http://hdl.handle.net/10400.9/2414 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Nunes, D.; Livramento, V.; Fernandes, H.; Silva, C.; Shohoji, N.; Correia, J.B.; Carvalho, P.A. Multiscale Copper-uDiamond Nanostructured Composites. In: Materials Science Forum, 2013,Vol. 730-732, p. 925-930 1662-9752 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Trans. Tech. Publications |
publisher.none.fl_str_mv |
Trans. Tech. Publications |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
_version_ |
1799130218707812352 |