Fabrication of Nanocrystalline Superplastic ZrO2 Ceramics

Abstract:

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An average particle size of d ≈ 300 nm can be reduced to a nanocrystalline size of about 10 nm or less after 400 h HEBM process. Amorphous-like phase is also observed among the nanocrystalline particles. Using SPS, the nanocrystalline powder can successfully be consolidated into a dense nanocrystalline ZrO2-spinel composite of d ≈ 90 nm. As compared with the data for submicro-grain composite with d = 350 nm, nano-crystalization increased the strain rate by one order of magnitude or lowered the deforming temperature by about 100 K.

Info:

Periodical:

Materials Science Forum (Volumes 551-552)

Edited by:

K.F. Zhang

Pages:

491-496

DOI:

10.4028/www.scientific.net/MSF.551-552.491

Citation:

K. Morita et al., "Fabrication of Nanocrystalline Superplastic ZrO2 Ceramics", Materials Science Forum, Vols. 551-552, pp. 491-496, 2007

Online since:

July 2007

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Price:

$35.00

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