Kinetics of chemical compound growth by surface interdiffusion

Yu S. Kaganovskii, L. N. Paritskaya, W. Lojkowski

Research output: Contribution to journalConference articlepeer-review

12 Scopus citations

Abstract

The kinetics of lateral spreading and thickening of a layer of the intermetallic compound AmBn, along the free surface of a substrate B caused by surface interdiffusion in a binary system A-B have been analyzed and studied experimentally in the Cd-Ni and Zn-Cu systems in the temperature ranges 200-280 °C and 160-280 °C, respectively, under compressive Ar pressures from 0.05 to 0.9 GPa. Over the Ni and Cu substrates the intermetallic compounds Cd21Ni5 and Cu5Zn8 were observed by scanning electron microscopy, atomic force microscopy and optical microscopy methods. By comparison of the experimental data on the growth kinetics with the proposed theory, the Cd and Zn diffusion coefficients over the Cd21Ni5 and Cu5Zn8 surfaces, respectively, have been calculated. Arrhenius equations have been obtained for pressures of 0.05 and 0.9 GPa, and the surface diffusion activation volumes have been determined for both systems. The surface diffusion mechanism has been discussed.

Original languageEnglish
Pages (from-to)591-597
Number of pages7
JournalSurface Science
Volume454
Issue number1
DOIs
StatePublished - 20 May 2000
EventECOSS-18: 18th European Conference on Surface Science - Vienna, Austria
Duration: 21 Sep 199924 Sep 1999

Bibliographical note

Funding Information:
This work was supported in part by the Ministry of Science and Arts of Israel.

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