On The Thermal Characterization Of Solids By Photoacoustic Calorimetry: Thermal Diffusivity And Linear Thermal Expansion Coefficient

dc.creatorBedoya
dc.creatorA.; Marin
dc.creatorE.; Mansanares
dc.creatorA. M.; Zambrano-Arjona
dc.creatorM. A.; Riech
dc.creatorI.; Calderon
dc.creatorA.
dc.date2015-AUG
dc.date2016-06-07T13:34:51Z
dc.date2016-06-07T13:34:51Z
dc.date.accessioned2018-03-29T01:50:27Z
dc.date.available2018-03-29T01:50:27Z
dc.identifier
dc.identifierOn The Thermal Characterization Of Solids By Photoacoustic Calorimetry: Thermal Diffusivity And Linear Thermal Expansion Coefficient. Elsevier Science Bv, v. 614, p. 52-58 AUG-2015.
dc.identifier0040-6031
dc.identifierWOS:000358809900008
dc.identifier10.1016/j.tca.2015.06.009
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0040603115002476
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/244002
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1307700
dc.descriptionIn this paper, we resume a straightforwardly methodology that can be employed for accurate thermal diffusivity measurement by photoacoustics. The proposed methodology involves measurements in the thermally thick sample regime with normalization using a thermally thin reference sample, as well as consideration of the sample's thermoelastic bending in both the thermally thin and thick regime. The usefulness of the method has been demonstrated with measurements in test samples of different materials. The possibilities of the method to account for linear thermal expansion coefficient have been discussed too. It has been demonstrated that for the determination of this parameter the sample must be in the ideal thermally thick regime, i.e. the range of modulation frequencies used must lie well above the cut-off frequency between the thermally thin and thick regimes. In other words, this cut-off frequency must be very small. Although this condition is very difficult to be achieved in praxis, in order to account for it, a method is proposed here that involves measurements in samples with different thicknesses and uses an extrapolation procedure. (C) 2015 Elsevier B.V. All rights reserved.
dc.description614
dc.description
dc.description
dc.description52
dc.description58
dc.descriptionCONACyT [205640, 2011-01-174247]
dc.descriptionCOFAA-IPN through the SIBE
dc.descriptionPIFI Program
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFOMIX [YUC-2011-C09-169739]
dc.description[SIP-IPN1638]
dc.description[20140006]
dc.description[20150390]
dc.description
dc.description
dc.description
dc.languageen
dc.publisherELSEVIER SCIENCE BV
dc.publisher
dc.publisherAMSTERDAM
dc.relationTHERMOCHIMICA ACTA
dc.rightsembargo
dc.sourceWOS
dc.subjectHeat-capacity
dc.subjectSpectroscopy
dc.subjectMetals
dc.subjectVolume
dc.titleOn The Thermal Characterization Of Solids By Photoacoustic Calorimetry: Thermal Diffusivity And Linear Thermal Expansion Coefficient
dc.typeArtículos de revistas


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