Thermal properties of AlN polycrystals obtained by pulse plasma sintering method

Paweł J. RUTKOWSKI; Dariusz KATA

doi:10.1007/s40145-013-0059-8

Journal of Advanced Ceramics 2013, 2(2): 180-184 https://doi.org/10.1007/s40145-013-0059-8

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Open Access | Issue | Published: 04 June 2013

Thermal properties of AlN polycrystals obtained by pulse plasma sintering method

Show Author's Information Hide Author's Information 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

Keywords:

aluminum nitride (AlN), thermal conductivity, microstructure, thermal diffusivity, specific heat

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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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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.

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About this article

Thermal properties of AlN polycrystals obtained by pulse plasma sintering method

Show Author's information Hide Author's Information 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

Abstract

Keywords: aluminum nitride (AlN), thermal conductivity, microstructure, thermal diffusivity, specific heat

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Acknowledgements

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Publication history

Received: 10 January 2013

Revised: 18 March 2013

Accepted: 24 March 2013

Published: 04 June 2013

Issue date: June 2013

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Acknowledgements

The research work was carried out within the project “New Construction Materials with High Thermal Conductivity” (No. UDA-POIG.01.01.02-00-97/09-01). Thermal conductivity measurements were performed in collaboration with Faculty Laboratory of Thermophysical Measurements of Materials Science and Ceramics Faculty, AGH University of Science and Technology in Krakow. Materials were obtained in collaboration with Laboratory of Warsaw University of Technology. Thanks to Dr. Lukasz Ciupinski from Faculty of Materials Science and Engineering, Warsaw University of Technology, for sample sintering by PPS process, and to Kamil Jankowski from Faculty of Material Science and Ceramics, AGH University of Science and Technology, for powder mixture preparation.

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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.