Enhanced oxidation and segregation in plasma source ion implanted alloy

Bolduc, M.; Terreault, B.
February 2003
Applied Physics Letters;2/10/2003, Vol. 82 Issue 6, p895
Academic Journal
Segregation of surprising magnitude and depth was discovered in oxygen plasma-implanted Mg-containing A1 alloys. In order to identify the respective roles of diffusional kinetics and oxidation energetics in the effect, pure A1 and an A1-Mg-Zn-Cu-Cr alloy were implanted for various times, or oxidized in air, at 700 K. Examination of depth profiles and chemical states of O, A1, and Mg by x-ray photoelectron spectroscopy reveals a potent synergy between the chemical potential drive and the radiation-enhanced diffusion.


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