Résumé du preprint DAPNIA-04-215

Comparative characterisation of surfaces states after chemical and electrochemical treatments
C. Antoine, S. Berry, A. Aspart
This report describes several approaches aiming at a convenient characterization and comparison of surface morphology of niobium after surface treatments. These techniques can be applied to niobium samples in order to optimize the electropolishing process: thanks to numerical estimation of various parameters (optical quality, gloss, roughness and topology parameters) we can easily compare samples surface and rank them. First results already show that slight modifications of the electropolishing conditions have a large impact on the achieved surface states


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