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Article
The stability of Pt nanofilaments in a Au-matrix composite
Gold Bulletin
  • Kageeporn Wongpreedee, Srinakharinwirot University
  • Alan M. Russell, Iowa State University
Document Type
Article
Publication Date
9-1-2007
DOI
10.1007/BF03215581
Abstract

Au-7 at.% Pt Deformation-processed Metal Metal Composite (DMMC) was isothermally annealed at various times and temperatures. Avrami and Arrhenius relations were used to evaluate the kinetics of the transformation from the initial metastable nanofilamentary microstructure to the equilibrium homogeneous solid solution condition. Results indicated that the activation energy for this transformation was 167 ± 6 kJ/mol. This activation energy is lower than activation energies reported in the literature for planar interface, single crystal Au-Pt diffusion couple experiments. The effects of chemical potential, surface curvature, and strain effects on the empirical activation energies determined in the DMMC of this study are discussed. These factors are thought to cause the DMMC systems to reach equilibrium faster.

Comments

This article is from Gold Bulletin 40 (2007): 199–205, doi:10.1007/BF03215581.

Rights
This article is published under the Creative Commons Attribution 2,0 Generic license (CC BY 2.0).
Copyright Owner
The authors
Language
en
Date Available
2014-01-19
File Format
application/pdf
Citation Information
Kageeporn Wongpreedee and Alan M. Russell. "The stability of Pt nanofilaments in a Au-matrix composite" Gold Bulletin Vol. 40 Iss. 32 (2007) p. 199 - 205
Available at: http://works.bepress.com/alan_russell/9/