Investigation of corrosion characteristics of Cu-10Ni-1.2Fe-<i>x</i>Mn (<i>x</i> = 0.53, 0.87, 1.19) alloy in 3.5% NaCl solution

Abstract

, revealing that adding an appropriate amount of Mn to the 90/10 cupronickel alloy can change the corrosion resistance of the alloy. The corrosion resistance first increases and then decreases with the addition of Mn content. Among them, the sample with 0.87% Mn addition has the best corrosion resistance, the corrosion product film is more complete, no cracks appear, and the corrosion product binding force is stronger. The addition of Mn promotes the filling of cation vacancies by Ni and generates more NiO, which enhances the stability of the corrosion product film.

Topics & Concepts