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Spark plasma sintering of alumina: Study of parameters, formal sintering analysis and hypotheses on the mechanism(s) involved in densification and grain growth

Gurt Santanach, Julien and Weibel, Alicia and Estournès, Claude and Yang, Q. and Laurent, Christophe and Peigney, Alain Spark plasma sintering of alumina: Study of parameters, formal sintering analysis and hypotheses on the mechanism(s) involved in densification and grain growth. (2011) Acta Materialia, vol. 59 (n° 4). pp. 1400-1408. ISSN 1359-6454

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Official URL: http://dx.doi.org/10.1016/j.actamat.2010.11.002

Abstract

The spark plasma sintering (SPS) of an undoped commercial α-Al2O3 powder (0.14 μm) was investigated. The SPS parameters such as the dwell temperature, applied external pressure, temperature of pressure application, dwell time and pulse pattern were varied. A sintering path (relative density vs. grain size) showing two regimes has been brought to the fore: densification without grain growth occurring at the lower temperatures and grain growth without much further densification taking place at the higher temperatures, with a threshold between 1100 and 1200 °C. In addition, a formal sintering analysis was performed in order to identify the mechanism(s) involved in densification and grain growth.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at Acta Materialia http://www.sciencedirect.com The original PDF of the article can be found at website :http://www.sciencedirect.com/science/journal/13596454
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Leila Abdelouhab

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