Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The chemical interdiffusion coefficient was measured in an amorphous Ni/sub 33/Zr/sub 67/Ni/sub 61/Zr/sub 39/ bilayer sample with the use of an ''inert'' marker layer of Au at the interface, and the regular solution approximation, tracer diffusivities for the constituent elements of the alloy were determined. In addition, tracer diffusivities of Au in this alloy, and of Au and Cu in homogeneous Ni/sub 50/Zr/sub 50/ amorphous alloys, were measured. The tracer diffusivities of Cu and Ni were much greater than those of Zr and Au suggesting that atomic radii strongly influence diffusion in this alloy. A preliminary value of roughly-equal105 kJ/mol for the activation enthalpy of Ni diffusion was deduced. Similarities between diffusion in a-NiZr alloy and ..cap alpha..-Zr are discussed.
- Research Organization:
- Argonne National Laboratory, Argonne, Illinois 60439
- OSTI ID:
- 5602300
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 33:12; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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