Abstract
In this study, we investigated the effects of current density on the behavior of an amorphous Ni-W coating on a stainless steel 316 L (SS316L) surface. The performances of the Ni-W coatings and SS316L were studied though SEM, XRD and four-probe resistance tester. The corrosion resistance of the coatings was determined through static corrosion tests in a sulfur environment at 350 °C. The amorphous Ni-W coating at different current densities slowed the corrosion rate and improved the conductivity of the SS316L current collector. At a current density of 15 A·dm−2, the crystal structure of the Ni -W coating was densest. The corrosion rate of the coating was 0.0856 mm·y−1, which was lower than that of SS316L (0.5123 mm·y−1) after 72 h in a 350 °C molten sulfur environment, and the block resistance was 0.3312 mΩ, which was also lower than that of SS316L (0.3825 mΩ).
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