Tribocorrosion of Passive Materials: A Review on Test Procedures and Standards

Figure 6

Total volume loss for an overlay-welded Ni-Cr 625 alloy under 15N at different applied potentials in sulphuric acid (IS) and nitric acid (IN) solutions. The material loss in IS at cathodic potentials is considerably smaller than at passive potentials, whereas this effect is less pronounced in IN, where the wear rate increases steadily with applied potential [59].