Photoacoustic Thermal Characterization of Porous Rare-Earth Phosphate Ceramics

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Photoacoustic Thermal Characterization of Porous Rare-Earth Phosphate Ceramics

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dc.contributor.author Sajan D, George
dc.contributor.author Rajesh, K
dc.contributor.author Warrier, K G K
dc.contributor.author Radhakrishnan, P
dc.contributor.author Nampoori, V P N
dc.contributor.author Vallabhan, C P G
dc.date.accessioned 2011-10-29T10:13:53Z
dc.date.available 2011-10-29T10:13:53Z
dc.date.issued 2011-10-29
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/2419
dc.description.abstract The laser induced non-destructive photoacoustic technique has been employed to measure the thermal diffusivity of lanthanum phosphate ceramics prepared by the sol–gel route. The thermal diffusivity value was evaluated by knowing the transition frequency between the thermally thin to thermally thick region from the log–log plot of photoacoustic amplitude versus chopping frequency. Analysis of the data was carried out on the basis of the one-dimensional model of Rosencwaig and Gersho. The present investigation reveals that the sintering temperature has great influence on the propagation of heat carriers and hence on the thermal diffusivity value. The results were interpreted in terms of variations in porosity with sintering temperature as well as with changes in grain size. en_US
dc.description.sponsorship ManipalUniversity,Regional Research Laboratory & Cochin University of Science and Technology en_US
dc.language.iso en en_US
dc.subject photoacoustic en_US
dc.subject porosity en_US
dc.subject rare-earth phosphate ceramics en_US
dc.subject thermal diffusivity. en_US
dc.title Photoacoustic Thermal Characterization of Porous Rare-Earth Phosphate Ceramics en_US
dc.type Working Paper en_US
dc.contributor.faculty Technology en_US
dc.identifier.url DOI: 10.1007/s10765-007-0153-7 en_US


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