Comparison of Techniques in a Study of Zinc Self-Diffusion
Self-diffusion in zinc has been used as an instrument for comparison of the absorption and sectioning techniques as a means of studying diffusion. Single crystal as well as poly-crystal samples were used and the temperature range of diffusion extended from 200° to 415°C. For temperatures above 200°C, the data indicate that the results obtained from the absorption technique agree with those obtained from the sectioning technique. The effect on the values of the diffusion coefficient of electroplating vs evaporation as a means of applying the tracer was investigated and no significant difference observed. It was found that an excess or deficiency of tracer did not materially affect the results obtained from the sectioning technique, but invariably caused errors with the absorption technique.
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- 3.A. M. Sagrubskij: Bulletin Academy of Science, USSR (1937) p. 903. Physical Series.Google Scholar
- 6.W. A. Johnson: Trans. AIME (1941) 143, p. 107; Metals Technology (January 1941).Google Scholar
- 9.M. S. Maier and H. R. Nelson: Trans. AIME (1942) 147, p. 39; Metals Technology (January 1942).Google Scholar
- 10.C. L. Raynor, L. Thomassen, and L. J. Rouse: Trans. ASM (1942) 30, p. 313.Google Scholar
- 11.J. Steigman, W. Shockley, and Nix: Physical Review (1939) 25, p. 605. See for derivation of Eq. 2.Google Scholar
- 17.R. E. Carter and F. O. Richardson: Trans. AIME (1954) 200, p. 1244; Journal of Metals (November 1954).Google Scholar
- 18.L. Himmel, R. F. Mehl, and C. E. Birchenall: Trans. AIME (1953); 197, p. 827; Journal of Metals (June 1953).Google Scholar
- 19.C. E. Birchenall: Private communication.Google Scholar