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Crystallization kinetics of amorphous nanostructured Pd40.5Ni40.5P19 alloys

Published online by Cambridge University Press:  26 November 2012

H. W. Ngai ,
C. C. Leung ,
W. H. Guo  and
H. W. Kui
H. W. Ngai
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Peoples Republic of China
C. C. Leung
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Peoples Republic of China
W. H. Guo
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Peoples Republic of China
H. W. Kui
Affiliation:
Department of Physics, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, Peoples Republic of China
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Abstract

When a homogeneous amorphous Pd40.5Ni40.5P19 alloy was subjected to thermal annealing for 30 min at various temperatures, novel microstructures were observed. At an annealing temperature of 603 K, phase separation of the amorphous phase dominated. At 628 K, a precipitation reaction proceeded first. After its completion, a eutectic growth set in. At 638 K, metastable spinodal decomposition occurred first, followed by a eutectic growth. Finally at 673 K, crystal growth of crystalline spinodal network was fast enough to compete with a eutectic growth.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 3 , March 2001 , pp. 797 - 802
Copyright
Copyright © Materials Research Society 2001

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References

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