The Study of Corrosion Behaviors of Carbon Steel Weldments and Their Inhibition in Simulated Pore Solution Using Multi-Electrode Array Technique

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 current. show that is likely happen around area its adjacent zone. intensive currents accelerate localized corrosion, while inhibit it.