Archives of Metallurgy and Materials (Jun 2016)

The Ni-Al-Hf Multiphase Diffusion

  • Romanowska J.,
  • Wierzba B.,
  • Markowski J.,
  • Zagula-Yavorska M.,
  • Sieniawski J.

DOI
https://doi.org/10.1515/amm-2016-0100
Journal volume & issue
Vol. 61, no. 2
pp. 587 – 592

Abstract

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The generalized Darken method was applied to simulate the diffusion between γ-Ni| γ’-Ni3Al and γ’-Ni3Al|β-NiAl interfaces. The results of calculations were compared with the experimental concentration’s profiles of nickel, aluminum and hafnium in aluminide and hafnium doped aluminide coatings deposited by the CVD and PVD methods on pure nickel. The method deals with the Wagner’s integral diffusion coefficients and thermodynamic data - activities of components. The experimental results agree with the simulated ones.

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