Processing and Properties of Niobia-Doped Alumina Sintered at 1400oC

Willian Trindade; Marcelo Henrique Prado da Silva; Alaelson Vieira Gomes; José Brant de Campos; Luis Henrique Leme Louro

doi:10.4028/www.scientific.net/MSF.798-799.665

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HomeMaterials Science ForumMaterials Science Forum Vols. 798-799Processing and Properties of Niobia-Doped Alumina...

Processing and Properties of Niobia-Doped Alumina Sintered at 1400^oC

Abstract:

Niobia is used as a sintering additive in alumina processing because it lowers the sintering temperature. This work investigated the influence of sintering dwell time at 1400^oC on the properties of 4 wt% niobia doped alumina. The sintered ceramics were characterized by scanning electron microscopy (SEM), and X rays diffraction (XRD) with Rietveld refinement. Measurements of density, average grain size, hardness, and elastic constants were also performed. The results showed that the porosity depend on the time sintering and this influence on the elastic properties. Longer sintering times improved densification and with this the Young's Modulus.

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Periodical:

Materials Science Forum (Volumes 798-799)

Pages:

665-670

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.798-799.665

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Online since:

June 2014

Authors:

Willian Trindade*, Marcelo Henrique Prado da Silva, Alaelson Vieira Gomes, José Brant de Campos, Luis Henrique Leme Louro

Keywords:

Alumina, Sintering, Solid-Phase

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