Compositional changes in |
| |
| Authors: | K K Soni D B Williams D E Newbury G Gillen P Chi D S Bright |
| |
| Affiliation: | (1) Enrico Fermi Institute, University of Chicago, 60637 Chicago, IL;(2) Department of Materials Science and Engineering, Lehigh University, 18015 Bethlehem, PA;(3) Surface and Microanalysis Science Division, Chemical Science and Technology Laboratory, National Institute of Standards and Technology, 20899 Gaithersburg, MD |
| |
| Abstract: | The compositional changes in Al-Li-(Mg)-(Cu) alloys induced by oxidation at high temperature (450 °C to 570 °C) were investigated
by secondary ion mass spectrometry (SIMS). It was found that the alloy surface beneath the oxide layer was depleted in both
Li and Mg as a consequence of the selective oxidation of these elements, whereas Cu concentration was nearly constant or slightly
increased in the affected zone. The measured-concentration profiles of Li and Mg were modeled using a diffusion equation to
obtain diffusion data for the alloys. The depletion profiles also provided information regarding the interfacial-alloy composition
and the depletion depth. The effect of alloying elements on the oxidation and depletion behavior is discussed. Secondary ion
mass spectrometry data were quantified using the relative sensitivity factor method, and the quantification procedure is described
in detail. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
