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Formation of Nanostructured Alloys by Liquid Phase Spinodal Decomposition

Published online by Cambridge University Press:  17 March 2011

W.H. Guo  and
H.W. Kui
W.H. Guo
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, P.R. China
H.W. Kui
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, P.R. China
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Abstract

A molten Pd82Si18 alloy, free of potent heterophase impurities and enclosed in a fused silica tube of conical shape, was quenched in water. Four regions classified according to their microstructures can be distinguished. They are: region I, amorphous; region II, a mixture of an amorphous nanostructure and a nanocrystal; region III, a mixture of two kinds of nanocrystals; region IV, spinodal networks; and region V, conventional eutectic structure. The detailed microstructures in each region are discussed.

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