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Effect of Particle Size on the Oxidation Behavior of Nanophase Tin Synthesized by Inert Gas Condensation

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Abstract:

Nanophase tin powder having sizes ranging from 6 to 40 nm was synthesized by the inert gas condensation method using helium as the convection gas. As-synthesized particles smaller than 8 nm were the amorphous tin oxide. As-synthesized particles larger than 10 nm can be characterized by the core-shell structure comprising inner crystalline tin core and outer amorphous tin oxide shell having a thickness of about 4 nm. Upon annealing in air, the oxidation of nanophase tin particles strongly depended on particle size. With increasing particle size, the transformation into the crystalline phases took places at a higher temperature. Calculation of the size dependent melting temperature of tin particles indicates that melting of the tin encapsulated with the amorphous tin oxide took place prior to the oxidation.

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Nanocomposites and Nanoporous Materials VII View Preview

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Periodical:

Solid State Phenomena (Volume 119)

Pages:

9-12

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.119.9

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Online since:

January 2007

Authors:

J.S. Kim, Moo Young Huh, Jae Pyong Ahn

Keywords:

Amorphous Tin Oxide, Nanoparticle, Nanophase TiN, Nanophase Tin Oxide, Oxidation

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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