Paper Title:
Self-Diffusion Parameters of Grain Boundaries and Triple Junctions in Nanocrystalline Materials
  Abstract

Suggested methods describe the process of self-diffusion along grain boundaries and triple junctions in polycrystals without using geometric models of the grain boundaries structure. The calculation method introduced diffusion characteristics along grain boundaries derived from the results of molecular dynamic simulations of nanocrystalline materials. The diffusion experiments were imposed to establish relationship between introduced diffusion characteristics and the diffusion parameters along grain boundaries and triple junctions of the Fisher’s grain boundary diffusion model. By the example of copper for the first time the characteristics of self-diffusion along grain boundaries of nanocrystalline materials and coarse grained analog defined in the same temperature range was compared for the first time. It was found that values of the self-diffusion characteristics along grain boundaries in high purity nanocrystalline and polycrystalline copper are equal at the same temperatures.

  Info
Periodical
Defect and Diffusion Forum (Volumes 309-310)
Edited by
B.S. Bokstein, A.O. Rodin and B.B. Straumal
Pages
45-50
DOI
10.4028/www.scientific.net/DDF.309-310.45
Citation
A.G. Lipnitskii, I.V. Nelasov, Y. Kolobov, "Self-Diffusion Parameters of Grain Boundaries and Triple Junctions in Nanocrystalline Materials", Defect and Diffusion Forum, Vols. 309-310, pp. 45-50, 2011
Online since
March 2011
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Price
$32.00
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