Corrosion Study of Base Material and Welds of a Ni–Cr–Mo–W Alloy

Alloys containing chromium (Cr) and molybdenum (Mo), as the major alloying elements, are widely used in various industries where the material experiences corrosive environments. Chromium (Cr), when added in an optimum amount, forms a Cr2O3 passive film which protects the underlying metal in aggressive solutions. Molybdenum (Mo) forms its oxides in the low pH solutions, thus, enhances the uniform corrosion resistance of an alloy in reducing acids...