Laser-induced thermal characterization of nano Ag metal dispersed ceramic alumina matrix

Sajan D. George, Aji A. Anapara, K. G.K. Warrier, P. Radhakrishnan, C. P.G. Vallabhan, V. P.N. Nampoori

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper, we report the measurements of thermal diffusivity of nano Ag metal dispersed ceramic alumina matrix sintered at different temperatures using laser induced non-destructive photoacoustic technique. Measurements of thermal diffusivity also have been carried out on specimens with various concentration of nano metal. Analysis of the data is done on the basis of one-dimensional model of Rosencwaig and Gersho. The present measurements on the thermal diffusivity of nano metal dispersed ceramic alumina shows that porosity has a great influence on the heat transport and the thermal diffusivity value. The present analysis also shows that the inclusion of nano metal into ceramic matrix increases its interconnectivity and hence the thermal diffusivity value. The present study on the samples sintered at different temperature shows that the porosity of the ceramics varies considerably with the change in sintering temperature. The results are interpreted in terms of phonon assisted heat transfer mechanism and the exclusion of pores with the increase in sintering temperature.

Original languageEnglish
Pages (from-to)207-212
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5118
DOIs
Publication statusPublished - 19-09-2003

Fingerprint

Thermal Diffusivity
Alumina
Aluminum Oxide
Thermal diffusivity
Cermets
thermal diffusivity
aluminum oxides
Metals
ceramics
Laser
Lasers
matrices
metals
Sintering
lasers
Porosity
porosity
sintering
Temperature
Heat Transport

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

George, Sajan D. ; Anapara, Aji A. ; Warrier, K. G.K. ; Radhakrishnan, P. ; Vallabhan, C. P.G. ; Nampoori, V. P.N. / Laser-induced thermal characterization of nano Ag metal dispersed ceramic alumina matrix. In: Proceedings of SPIE - The International Society for Optical Engineering. 2003 ; Vol. 5118. pp. 207-212.
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Laser-induced thermal characterization of nano Ag metal dispersed ceramic alumina matrix. / George, Sajan D.; Anapara, Aji A.; Warrier, K. G.K.; Radhakrishnan, P.; Vallabhan, C. P.G.; Nampoori, V. P.N.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5118, 19.09.2003, p. 207-212.

Research output: Contribution to journalArticle

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