Mass transport of W atoms and variation of stoichiometry in Al-Ni coating as a result of electron beam irradiation

A. D. Pogrebnjak, S. M. Duvanov, B. P. Gritsenko, N. A. Pogrebnjak, M. K. Kylyshkanov

Research output: Contribution to journalArticlepeer-review

Abstract

Variation of the effective diffusion coefficient from 2.0 × 10 -7 to 1.1 × 10-5 cm2/s is detected for the first time using back scattering (BS) of ions, scanning electron microscopy (SEM) with microanalysis (wave-length dispersive spectrometry, WDS) and nanohardness. Three stages are discovered in the motion of W ions: (i) from the coating surface to the bulk (without melting), (ii) accelerated mass transfer to the bulk with melting, and (iii) sharp decreases in the peak concentration of W ions and reversal of the direction (from the bulk to the surface).

Original languageEnglish
Pages (from-to)1502-1505
Number of pages4
JournalTechnical Physics
Volume52
Issue number11
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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