Microwave-assisted reaction sintering of bismuth titanate-based ceramics
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2006-04
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Bismuth titanate-based ceramics, pure and doped with 5 mol% WO3, were prepared by reaction-sintering using a microwave oven. High densities, ≥96% of theoretical density were achieved with very short thermal treatments, with soaking time ranging from 5 to 15 min. Relatively small platelet-like grains were formed, and microstructure seemed not to be strongly affected by doping nor soaking time. Electrical measurements were performed and, as expected, a decrease of electrical conductivity was observed in WO 3-doped materials. The results of reaction-sintered samples, both conventional as well as microwave sintered, are compared with those of samples prepared with previously calcined powders and sintered using microwaves as well as a conventional electric furnace.
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Azurmendi , N , Caro , I , Caballero , A C , Jardiel , T & Villegas , M 2006 , ' Microwave-assisted reaction sintering of bismuth titanate-based ceramics ' , Journal of the American Ceramic Society , vol. 89 , no. 4 , pp. 1232-1236 . https://doi.org/10.1111/j.1551-2916.2005.00882.x