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The Preparation and Characterization of beta-SiAlON Nanostructure Whiskers
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2008 (English)Article in journal (Refereed) Published
Abstract [en]

Two kinds of beta-SiAlON nanostructure whiskers, rod-like and wool-like whiskers, were synthesized by pressure-less sintering method at 1773 K for 5 hours. The whiskers synthesized were characterized by powder X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and high-resolution electron microscope (HREM) techniques. It was found that diameter distribution of rod-like whiskers was about 80-250 nm, while it was about 45-55 nm in diameter for the wool-like whiskers. The growth mechanisms of beta-SiAlON nanostructure whiskers are discussed by the vapor-solid (VS) and vapor-liquid-solid (VLS) mechanisms, respectively.

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Keyword [en]
al-o-n, combustion synthesis, ceramics, alumina, microstructure, beta'-sialon, nanowires, oxidation, growth
URN: urn:nbn:se:kth:diva-17921DOI: 10.1155/2008/282187ISI: 000260464600001ScopusID: 2-s2.0-55849149462OAI: diva2:335966
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Seetharaman, Seshadri
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Materials Process Science

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