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dc.contributor.authorHEMMOUCHE, L.
dc.contributor.author
 hal.structure.identifier
CHICOT, Didier
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
dc.contributor.author
 hal.structure.identifier
AMROUCHE, A.
197216 Laboratoire Génie Civil et Géo-Environnement [Béthune] [LGCgE]
dc.contributor.author
 hal.structure.identifier
IOST, Alain
211915 Mechanics surfaces and materials processing [MSMP]
dc.contributor.authorBELOUCHRANI, M.A.
dc.contributor.author
 hal.structure.identifier
DECOOPMAN, Xavier
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
dc.contributor.authorLOUIS, G.
dc.contributor.author
 hal.structure.identifier
PUCHI-CABRERA, Eli-Saul
1252 Laboratoire de Mécanique de Lille - FRE 3723 [LML]
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2013
dc.date.submitted2014
dc.identifier.issn0921-5093
dc.identifier.urihttp://hdl.handle.net/10985/8554
dc.description.abstractThe elastic modulus of thin films can be directly determined by instrumented indentation when the indenter penetration does not exceed a fraction of the film thickness, depending on the mechanical properties of both film and substrate. When it is not possible, application of models for separating the contribution of the substrate is necessary. In this work, the robustness of several models is analyzed in the case of the elastic modulus determination of a porous aluminium oxide film produced by anodization of an aluminium alloy. Instrumented indentation tests employing a Berkovich indenter were performe data nanometric scale, which allowed a direct determination of the film elastic modulus, whose value was found to be approximately 11 GPa. However, at a micrometric scale the elastic modulus tends toward the value corresponding to the substrate, of approximately 73 GPa. The objective of the present work is to apply different models for testing their consistency over the complete set of indentation data obtained from both classical tests in microindentation and the continuous stiffness measurement mode in nanoindentation. This approach shows the continuity between the two scales of measurement thus allowing a better representation of the elastic modulus variation between two limits corresponding to the substrate and film elastic moduli. Gao's function proved to be the best to represen the elastic modulus variation.
dc.publisherElsevier
dc.rightsPost-print
dc.subjectElastic modulus
dc.subjectNanoindentation
dc.subjectAluminium alloy
dc.subjectPorous material
dc.subjectThin film
dc.titleAn analysis of the elastic properties of a porous aluminium oxide film by means of indentation techniques
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Lille
dc.subject.halSciences de l'ingénieur: Matériaux
ensam.audienceInternationale
ensam.page155-164
ensam.journalMaterials Science and Engineering: A
ensam.volumeA
ensam.issue585
hal.identifierhal-01065625
hal.version1
hal.submission.permittedupdateMetadata
hal.statusaccept


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