Influence of Co-Doping on the Sintering Map of an Ultra Fine and Ultra Pure Alpha Alumina Powder

Abstract:

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The sintering map of an ultra fine and ultra pure α-alumina powder, doped with MO and DO2 (M for mono-valence cations, D for bi-valence cations), has been built from isothermal sintering experiments. It has been compared with the one obtained in a previous study with the same un-doped α-alumina raw powder. It seems that a transient liquid phase appears above a critical temperature in the co-doped material during sintering. It is proposed that this transient liquid phase is promoting densification and minimizing grain growth, as confirmed by transmission electron microscopy (TEM).

Info:

Periodical:

Edited by:

P. VINCENZINI

Pages:

55-60

DOI:

10.4028/www.scientific.net/AST.45.55

Citation:

G. Bernard-Granger and C. Guizard, "Influence of Co-Doping on the Sintering Map of an Ultra Fine and Ultra Pure Alpha Alumina Powder", Advances in Science and Technology, Vol. 45, pp. 55-60, 2006

Online since:

October 2006

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Price:

$35.00

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