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 language | English |
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Pages (from-to) | 1502-1505 |
Number of pages | 4 |
Journal | Technical Physics |
Volume | 52 |
Issue number | 11 |
DOIs | |
Publication status | Published - Nov 2007 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)