Sinterability, Mechanical, and Electrical Properties of Al₂O₃/8YSZ Nanocomposites Prepared by Ultrasonic Spray Pyrolysis

Authors: Yang, Jae-Kyo; Shim, Kwang-Bo; Kim, Hee-Taik; Choa, Yong-Ho

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3404-3407(4)

Publisher: American Scientific Publishers

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Abstract:

Al₂O₃ nanoparticles added the YSZ for improving the mechanical property and the ionic conductivity. Al₂O₃/YSZ nanocomposites were prepared by ultrasonic spray pyrolysis and PECS process. The relative density of the Al₂O₃/YSZ nanocomposites was fully densified at a sintering temperature of 1100°C. The grain size for 5 vol.% Al₂O₃/YSZ was less than 100 nm. The fracture toughness and total ionic conductivity of Al₂O₃/YSZ nanocomposites were improved compared with Al₂O₃/YSZ nanocomposites by conventional process, due to homogeneous dispersion and uniform particle size of added Al₂O₃.

Keywords: SOFC ELECTROLYTE; AL2O3/YSZ; NANOCOMPOSITE; IONIC CONDUCTIVITY; MECHANICAL PROPERTY

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2006.021

Publication date: 2006-11-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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