Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys

H. Hahn, Robert S Averback, S. J. Rothman

Research output: Contribution to journalArticle

Abstract

The chemical interdiffusion coefficient was measured in an amorphous Ni33Zr67 -Ni61Zr39 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 Ni50Zr50 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 105 kJ/mol for the activation enthalpy of Ni diffusion was deduced. Similarities between diffusion in a-NiZr alloy and-Zr are discussed.

Original languageEnglish (US)
Pages (from-to)8825-8828
Number of pages4
JournalPhysical Review B
Volume33
Issue number12
DOIs
StatePublished - Jan 1 1986
Externally publishedYes

Fingerprint

diffusivity
tracers
markers
Amorphous alloys
enthalpy
activation
Enthalpy
Chemical activation
radii
coefficients
approximation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys. / Hahn, H.; Averback, Robert S; Rothman, S. J.

In: Physical Review B, Vol. 33, No. 12, 01.01.1986, p. 8825-8828.

Research output: Contribution to journalArticle

Hahn, H. ; Averback, Robert S ; Rothman, S. J. / Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys. In: Physical Review B. 1986 ; Vol. 33, No. 12. pp. 8825-8828.
@article{ba6d61835b0e41da8c7a1bfce3511f27,
title = "Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys",
abstract = "The chemical interdiffusion coefficient was measured in an amorphous Ni33Zr67 -Ni61Zr39 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 Ni50Zr50 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 105 kJ/mol for the activation enthalpy of Ni diffusion was deduced. Similarities between diffusion in a-NiZr alloy and-Zr are discussed.",
author = "H. Hahn and Averback, {Robert S} and Rothman, {S. J.}",
year = "1986",
month = "1",
day = "1",
doi = "10.1103/PhysRevB.33.8825",
language = "English (US)",
volume = "33",
pages = "8825--8828",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "12",

}

TY - JOUR

T1 - Diffusivities of Ni, Zr, Au, and Cu in amorphous Ni-Zr alloys

AU - Hahn, H.

AU - Averback, Robert S

AU - Rothman, S. J.

PY - 1986/1/1

Y1 - 1986/1/1

N2 - The chemical interdiffusion coefficient was measured in an amorphous Ni33Zr67 -Ni61Zr39 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 Ni50Zr50 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 105 kJ/mol for the activation enthalpy of Ni diffusion was deduced. Similarities between diffusion in a-NiZr alloy and-Zr are discussed.

AB - The chemical interdiffusion coefficient was measured in an amorphous Ni33Zr67 -Ni61Zr39 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 Ni50Zr50 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 105 kJ/mol for the activation enthalpy of Ni diffusion was deduced. Similarities between diffusion in a-NiZr alloy and-Zr are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0040402566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040402566&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.33.8825

DO - 10.1103/PhysRevB.33.8825

M3 - Article

AN - SCOPUS:0040402566

VL - 33

SP - 8825

EP - 8828

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 12

ER -