Application of numerical inverse method in calculation of composition-dependent interdiffusion coefficients in finite diffusion couples

  • Liu Y
  • Chen W
  • Zhong J
  • et al.
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Abstract

The previously developed numerical inverse method was applied to determine the composition-dependent interdiffusion coefficients in single-phase finite diffusion couples. The numerical inverse method was first validated in a fictitious binary finite diffusion couple by pre-assuming four standard sets of interdiffusion coefficients. After that, the numerical inverse method was then adopted in a ternary Al-Cu-Ni finite diffusion couple. Based on the measured composition profiles, the ternary interdiffusion coefficients along the entire diffusion path of the target ternary diffusion couple were obtained by using the numerical inverse approach. The comprehensive comparisons between the computations and the experiments indicate that the numerical inverse method is also applicable to high-throughput determination of the composition-dependent interdiffusion coefficients in finite diffusion couples.

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Liu, Y., Chen, W., Zhong, J., Chen, M., & Zhang, L. (2017). Application of numerical inverse method in calculation of composition-dependent interdiffusion coefficients in finite diffusion couples. Metallurgical and Materials Engineering, 23(3), 197–211. https://doi.org/10.30544/308

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