Diffusion and growth of the µ phase (Ni6Nb7) in the Ni-Nb system

S.S.K. Balam, Hongqun Dong, Tomi Laurila, Vesa Vuorinen, Aloke Paul

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Incremental diffusion couple experiments are conducted to determine the average interdiffusion coefficient and the intrinsic diffusion coefficients of the species in the Ni 6Nb 7 (μ phase) in the Ni-Nb system. Further, the tracer diffusion coefficients are calculated from the knowledge of thermodynamic parameters. The diffusion rate of Ni is found to be higher than that of Nb, which indicates higher defect concentration in the Ni sublattice. © 2011 The Minerals, Metals & Materials Society and ASM International.

Original languageEnglish
Pages (from-to)1727-1731
Number of pages5
JournalMETALLURGICAL AND MATERIALS TRANSACTIONS A: PHYSICAL METALLURGY AND MATERIALS SCIENCE
Volume42
Issue number7
DOIs
Publication statusPublished - Jul 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • diffusion kinetics
  • thermodynamics

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