Bulk-to-surface Precipitation And Surface Diffusion Of Carbon On Polycrystalline Nickel

Author

J. F. Mojica
L. L. Levenson, Missouri University of Science and Technology

Abstract

The time evolution of the KLL Auger spectrum of carbon as a function of temperature is used to derive the kinetics of the surface diffusion and bulk-to-surface precipitation of carbon on polycrystalline nickel. The results show that the activation energy for the surface diffusion of carbon atoms on polycrystalline nickel is 6.9 ± 0.6 kcal mole, and the activation energy for bulk-to-surface precipitation is 9.4 ± 0.6 kcal mole. The dependence on the surface diffusion coefficient Ds (cm2s-1), on the absolute temperature T can be represented, over the experimental temperature range, 350-425° C, by: ln Ds = 10.27 - 3568 T. © 1976.

Recommended Citation

J. F. Mojica and L. L. Levenson, "Bulk-to-surface Precipitation And Surface Diffusion Of Carbon On Polycrystalline Nickel," Surface Science, vol. 59, no. 2, pp. 447 - 460, Elsevier, Jan 1976.

The definitive version is available at https://doi.org/10.1016/0039-6028(76)90028-5

Department(s)

Physics

Comments

National Science Foundation, Grant None

International Standard Serial Number (ISSN)

0039-6028

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Elsevier, All rights reserved.

Publication Date

01 Jan 1976