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

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.

  Info
Periodical
Edited by
P. VINCENZINI
Pages
957-962
DOI
10.4028/www.scientific.net/AST.45.957
Citation
P. Palmero, A. M. Locci, J. M. Tulliani, R. Orrù, G. Cao, L. Montanaro, "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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