Tracer diffusion of 63Ni in Ni3(Al,Ge) ternary intermetallic compound

C. Cserháti, I. Szabó, Zs Márton, G. Erdélyi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Radio-tracer diffusion measurements of 63Ni have been performed in Ni75AlxGe25-x ternary intermetallic compounds at various temperatures. The tracer diffusivity was found to depend exponentially on the Ge content of the alloy. These compounds are ordered with the L12 structure, where the Ni atom diffusion proceeds mainly via Ni sublattice site jumps. The change of the diffusivity can be attributed to the change in vacancy concentration on the Ni sublattice as well as to the composition dependence of the saddle-point energy of the diffusion jumps.

Original languageEnglish
Pages (from-to)887-892
Number of pages6
JournalIntermetallics
Volume10
Issue number9
DOIs
Publication statusPublished - Sep 2002

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Intermetallics
Vacancies
Atoms
Chemical analysis
Temperature

Keywords

  • A. Nickel aluminides, based on NiAl
  • A. Ternary alloy systems
  • B. Diffusion

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Tracer diffusion of 63Ni in Ni3(Al,Ge) ternary intermetallic compound. / Cserháti, C.; Szabó, I.; Márton, Zs; Erdélyi, G.

In: Intermetallics, Vol. 10, No. 9, 09.2002, p. 887-892.

Research output: Contribution to journalArticle

Cserháti, C. ; Szabó, I. ; Márton, Zs ; Erdélyi, G. / Tracer diffusion of 63Ni in Ni3(Al,Ge) ternary intermetallic compound. In: Intermetallics. 2002 ; Vol. 10, No. 9. pp. 887-892.
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