Abstract Widespread application of magnesium (Mg) has been prevented by its low strength and poor corrosion resistance. Core this limitation is Mg’s electrochemical potential solubility for most elements, favoring secondary phase precipitation acting as effective micro-galvanic elements. Mg-based metal–metal composites, while benefiting strength, are similarly active galvanic couples. We show t...

A multi-electrode array sensor was developed to study the corrosion behaviors of carbon steel weldments and effectiveness NaNO2 inhibitor in carbonated pore solution. The can simulate a complete weldment, measurement results match well with coupon immersion test. galvanic between weld area, heat-affected base metal as effect nitrite on were observed by measuring open circuit potential, coupling...