Improved corrosion resistance of stainless steel X6CrNiMoTi17-12-2 by slide diamond burnishing

The article presents an nonconventional finishing method – diamond slide burnishing. The effect of drawing, polishing and burnishing on corrosion resistance was examined by quickened electrochemical investigations using the potentiodynamic method. The investigation showed a correlation of the indicators ΔEp (passive area width) and ΔEh (hysteresis loop width at repassivation) with residual stresses in the surface layer and with some surface geometric structure parameters, too. Microscopic observations made it possible to determine the nature of surface corrosion changes. Generally, the best corrosion resistance was found after burnishing.