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Research Article | Open Access

Thermal properties of AlN polycrystals obtained by pulse plasma sintering method

Paweł J. RUTKOWSKI*( ), Dariusz KATA
Department of Ceramics and Refractories, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland
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Abstract

Aluminum nitride (AlN) polycrystals were prepared by pulse plasma sintering (PPS) technique. The starting AlN powder mixtures were composed with 3.0 wt%, 5.0 wt% and 10 wt% of yttrium oxide (Y2O3), respectively. Relative density of each polycrystal was measured by hydrostatic method and evaluated higher than 97%. X-ray diffraction (XRD) method was used for phase examination of the samples after heat treatment. Microstructure examination supported by computer-aided analysis was performed by scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). The results were correlated with thermal conductivity of the samples carried out by laser pulse method (LFA). The influence of the rapid sintering technique and yttrium oxide additive content on the thermal conductivity and microstructure appearance of AlN polycrystals was clearly shown.

Keywords

aluminum nitride (AlN)thermal conductivitymicrostructurethermal diffusivityspecific heat

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Journal of Advanced Ceramics
Volume 2 Issue 2,
June 2013
Pages 180-184
DOI: 10.1007/s40145-013-0059-8
Cite this article:
RUTKOWSKI PJ, KATA D. Thermal properties of AlN polycrystals obtained by pulse plasma sintering method. Journal of Advanced Ceramics, 2013, 2(2): 180-184. https://doi.org/10.1007/s40145-013-0059-8

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Received: 10 January 2013
Revised: 18 March 2013
Accepted: 24 March 2013
Published: 04 June 2013
© The author(s) 2013

Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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