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Interdiffusion behavior in sigma-phase using Ni3Al/Mo diffusion couples
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The sigmaNiMo( Al) phase was formed using Ni3Al/Mo diffusion couples at 1423,
1473 and 1523 K. The growth of formed phase and the concentration-distance
profiles for each component in the diffusion couples were examined by
electron probe microanalysis (EPMA). The activation energy for the parabolic
growth of ? phase is found to be 525.3 kJ/mol. The concentration dependence
and average ternary interdiffusion coefficients in single ?-NiMo(Al) phase
were calculated, and the Arrhenius equations of the D for the ?-NiMo(Al)
phase are calculated, the diffusional interaction between Ni, Mo and Al in
?-NiMo(Al) phase was studied by the crossinterdiffusion coefficients.
Moreover, these results were utilized to explain the ? phase formation and
growth in ?? phase.
Title: Interdiffusion behavior in sigma-phase using Ni3Al/Mo diffusion couples
Description:
The sigmaNiMo( Al) phase was formed using Ni3Al/Mo diffusion couples at 1423,
1473 and 1523 K.
The growth of formed phase and the concentration-distance
profiles for each component in the diffusion couples were examined by
electron probe microanalysis (EPMA).
The activation energy for the parabolic
growth of ? phase is found to be 525.
3 kJ/mol.
The concentration dependence
and average ternary interdiffusion coefficients in single ?-NiMo(Al) phase
were calculated, and the Arrhenius equations of the D for the ?-NiMo(Al)
phase are calculated, the diffusional interaction between Ni, Mo and Al in
?-NiMo(Al) phase was studied by the crossinterdiffusion coefficients.
Moreover, these results were utilized to explain the ? phase formation and
growth in ?? phase.
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