Abstract
Tracer impurity diffusion coefficients for Co and Hf were measured in a series of amorphous NixZr(1-x) alloys in the range 0.30 < x < 0.70 and at temperatures between 250 °C and 350° C. The diffusion coefficients for the Co atoms are between 2 and 4 orders of magnitude greater than those for Hf, depending on alloy composition and temperature. Diffusion coefficients for Hf are independent of alloy composition, whereas those for Co decrease strongly with increasing Ni content. The activation enthalpies of diffusion and the pre-exponential factors were both found to be significantly smaller for the Hf than the Co tracer impurity atoms. These results are discussed in terms of possible diffusion mechanisms in amorphous metallic alloys.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Amorphous Metallic Alloys. ed. F. E. Luborsky, (Butterworths, London, 1983).
B. Canter, and R. W. Cahn in: Amorphous Metallic Alloys. Ed. F. E. Luborsky, Butterworths, London (1983) p. 487.
R. B. Schwarz, K. L. Wong, W. L. Johnson, and B. M. Clemens, J. Non-Cryst. Sol. 61/62 (1984) 129.
Y. -T. Cheng, W. L. Johnson, and M. -A. Nicolet, Appl. Phys. Lett. 47 (1985) 800.
H. Hahn, R. S. Averback, and S. J. Rothman, Phy. Rev. B33 (1986) 8825.
H. Hahn and R. S. Averback, Phy. Rev. B37. (1988) 6533.
K. Hoshino, R. S. Averback, H. Hahn, and S. J. Rothman, J. Mat. Res. 3, (1988) 55.
K. N. Tu and T. C. Chou, Phys. Rev. Lett. 61 (1988) 1863.
L. S. Darken and R. W. Gurry in Physical Chemistry of Metals, (McGraw Hill, New York, 1953) p. 463.
J. C. Barbour, Phys. Rev. Lett. 55 (1985) 2872.
H. Hahn, R. S. Averback, and H. -M Wu, J. Less Comm. Metals, 140 (1988) 345.
H. Nakajima, M. Koiwa, Y. Minonishi, and S. Ono, Tran. Japan Inst. of Metals.24 (1983) 655.
G. M. Hood and R. J. Schultz, Philo. Magazine, 26 (1972) 329.
D. Gupta, K. N. Tu and K. W. Asai, Phys. Rev. Lett. 35 (1975) 796.
M. Ahmadzadeh, and B. Canter, J. Non-Cryst. Sol. 43 (1981) 189.
K. Kronmüller, and W. Frank, Rad. Effs. and Defects in Solids, 108 (1989) 81.
The authors are grateful to Ms. J.E. Baker for helpful discussions about SIMS measurements. The SIMS measurements were performed in the Center for Microanalysis of Materials in the Materials Research Laboratory at the University of Illinois. The work was supported by the National Science Foundation under grant DMR 86-12860.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Wu, H.M., Hahn, H. & Averback, R.S. Tracer Diffusion in Amorphous Ni-Zr Alloys. MRS Online Proceedings Library 187, 27–32 (1990). https://doi.org/10.1557/PROC-187-27
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-187-27