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High-resolution medium-energy ion scattering (MEIS) has been used to investigate the segregation of arsenic and sulfur on the (100) oriented surface of a body-centered cubic Fe-9% W(100) single crystal containing 53wt-ppm As and 10wt-ppm S. The sensitivities of Auger electron spectroscopy (AES), X-ray photoelectron spectroscopy (XPS), and MEIS to the presence of As on Fe or Fe-base alloy surfaces...
This work describes an experimental study of the effects of nitrogen and sulphur on the surface segregation of molybdenum in an Fe-3.5%Mo alloy. It is found that the presence of small concentrations of bulk dissolved nitrogen induce a strong synergetic segregation (cosegregation) of molybdenum and nitrogen. This effect is strongest for the (100)-oriented alloy, where an epitaxially stabilized MoN...
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