Laser Sintering of BaTiO3 Ceramics Obtained from Nanometric Powders

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We have studied the synthesis and sintering of BaTiO3 (BTO) nanometric powders produced by Pechini technique. A laser sintering procedure was applied to the BTO and its major advantage was the quickness of the processing. We have used the radiation of a CO2 laser (CW – 100 W) as the heating source. A linear rate of irradiation was applied to avoid macroscopic defects. The calcined powder at 800°C presented a single crystalline phase confirmed by the XRD and a crystallite size of 20 nm. BTO ceramics sintered at Pmax = 7.0 W/mm2 for 10 min of irradiation showed a high relative density (98 ± 1) % with an average grain size of 400 nm for a total time of sintering of 40 minutes.

Info:

Periodical:

Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho

Pages:

1216-1220

DOI:

10.4028/www.scientific.net/MSF.514-516.1216

Citation:

R. S. da Silva and A. C. Hernandes, "Laser Sintering of BaTiO3 Ceramics Obtained from Nanometric Powders", Materials Science Forum, Vols. 514-516, pp. 1216-1220, 2006

Online since:

May 2006

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$35.00

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