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Simultaneous determination of the lattice thermal conductivity and grain/grain thermal resistance in polycrystalline diamond

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dc.creatorAnaya, Juan-Manuel
dc.creatorBai, T.spa
dc.creatorWang, Y.spa
dc.creatorLi. C.spa
dc.creatorGoorsky, M.spa
dc.creatorBougher, T.L.spa
dc.creatorYates, L.spa
dc.creatorCheng, Z.spa
dc.creatorGraham, S.spa
dc.creatorArt, Hobspa
dc.creatorFeygelson, T. I.spa
dc.creatorTadjet, M. J.spa
dc.creatorAnderson, T. J.spa
dc.creatorPate, B. B.spa
dc.creatorKubal, M.spa
dc.date.accessioned2020-08-06T16:20:31Z
dc.date.available2020-08-06T16:20:31Z
dc.date.created2017-10-15spa
dc.description.abstractThe in-plane and cross-plane thermal conductivity of polycrystalline diamond near its nucleation region have been measured by Raman thermography assisted by TiO2 nanoparticles and by picosecond time-domain thermoreflectance (TDTR). This information has been combined with a finite element thermal model making use of the real grain structure, including information on the grain orientation, of the film extracted by transmission electron microscopy (TEM). This methodology allows to simultaneously determine the thermal resistance between grains and the lattice thermal conductivity of the sample without any adjustable parameter. The results show that the lattice thermal conductivity of the near nucleation diamond is 5–8 times smaller than the one observed in IIa single-crystalline diamond; the thermal resistance between grains is at least one order of magnitude higher than values predicted by molecular dynamic simulations. Finally, we show how the anisotropy in thermal conductivity observed in polycrystalline diamond naturally emerges from its grain structure and the thermal resistance at grain boundaries.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.actamat.2017.08.007
dc.identifier.issnISSN: 1359-6454
dc.identifier.issnEISSN: 1873-2453
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/26039
dc.language.isoengspa
dc.publisherElsevierspa
dc.relation.citationEndPage225
dc.relation.citationStartPage215
dc.relation.citationTitleActa Materialia, Acta Metallurgica et Materialia, Acta Metallurgica
dc.relation.citationVolumeVol. 139
dc.relation.ispartofActa Materialia, ISSN: 1359-6454;EISSN: 1873-2453, Vol.139, (2017-10-15);pp. 215-225spa
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S135964541730650X?via%3Dihubspa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.sourceActa Materialia, Acta Metallurgica et Materialia, Acta Metallurgicaspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordThermal conductivityspa
dc.subject.keywordNanocrystalline diamondspa
dc.subject.keywordGrain boundariesspa
dc.titleSimultaneous determination of the lattice thermal conductivity and grain/grain thermal resistance in polycrystalline diamondspa
dc.title.TranslatedTitleDeterminación simultánea de la conductividad térmica de celosía y resistencia térmica grano / grano en diamante policristalinospa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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