Conventional and SPS Sintering of a Nanocrystalline Alumina: A Comparative Study

Abstract:

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In this paper, five powdered samples, containing different amounts of nanosized α-alumina, were obtained by controlled thermal pre-treatments of a transition alumina, and then densified by both free-sintering in air at 1500°C for 3 h and by Spark Plasma Sintering in the temperature range 1150°C - 1400°C with different soaking times at the maximum temperature. A comparative study of the influence of the phase composition in the starting alumina powders on both sintering behavior and microstructural features of the densified bodies is presented, showing a relevant influence of powder thermal pre-treatment on the SPS process, in a strict analogy to natural sintering.

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Periodical:

Edited by:

P. VINCENZINI

Pages:

957-962

DOI:

10.4028/www.scientific.net/AST.45.957

Citation:

P. Palmero et al., "Conventional and SPS Sintering of a Nanocrystalline Alumina: A Comparative Study ", Advances in Science and Technology, Vol. 45, pp. 957-962, 2006

Online since:

October 2006

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$35.00

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