Photoacoustic thermal characterization of Al2O3–Ag ceramic nanocomposites

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Photoacoustic thermal characterization of Al2O3–Ag ceramic nanocomposites

Show simple item record Sajan, D George Aji, A Anapara Warrier, P R S Warrier, K G K Radhakrishnan, P Nampoori, V P N Vallabhan, C P G 2011-11-04T03:41:12Z 2011-11-04T03:41:12Z 2008-09
dc.identifier.issn 0254-0584
dc.identifier.other Materials Chemistry and Physics Volume 111, Issue 1, 15 September 2008, Pages 38-41
dc.description.abstract Laser-induced nondestructive photoacoustic (PA) technique has been employed to determine the thermal diffusivity of nanometal (Ag) dispersed ceramic alumina matrix sintered at different temperatures. The thermal diffusivity values are evaluated by knowing the transition frequency from the amplitude spectrum of PA signal using the one-dimensional heat flow model of Rosencwaig and Gersho. Analysis of the data shows that heat transport and hence the thermal diffusivity value is greatly affected by the influence of incorporation of foreign atom. It is also seen that sintering temperature affects the thermal diffusivity value in a substantial manner. The results are interpreted in terms of variation in porosity and carrier-assisted heat transport mechanism in nanometal dispersed ceramics. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Photoacoustic en_US
dc.subject Sol–gel; Ceramics en_US
dc.subject Thermal properties en_US
dc.subject Nano-composite en_US
dc.title Photoacoustic thermal characterization of Al2O3–Ag ceramic nanocomposites en_US
dc.type Working Paper en_US
dc.contributor.faculty Technology en_US
dc.identifier.url en_US

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