Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5395974 | Journal of Electron Spectroscopy and Related Phenomena | 2014 | 8 Pages |
Abstract
We have studied the variation in the work function of the surface of sputtered cleaned 316L stainless steel with only a very thin residual oxide surface layer as a function of grain orientation using X-ray photoelectron emission microscopy (XPEEM) and Electron Backscattering Diffraction. The grains are mainly oriented [1Â 1Â 1] and [1Â 0Â 1]. Four distinct work function values spanning a 150Â meV energy window are measured. Grains oriented [1Â 1Â 1] have a higher work function than those oriented [1Â 0Â 1]. From core level XPEEM we deduce that all grain surfaces are Cr enriched and Ni depleted whereas the Cr/Fe ratio is similar for all grains. The [1Â 1Â 1] oriented grains show evidence for a Cr2O3 surface oxide and a higher concentration of defective oxygen sites.
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Authors
N. Barrett, O. Renault, H. Lemaître, P. Bonnaillie, F. Barcelo, F. Miserque, M. Wang, C. Corbel,