2010•Corrosion & Protection in Petrochemical IndustryRequires access

Galvanic Corrosion of Carbon Steel-Ni-base Couple and Impact Factors

Avic Beijing, Cnooc Enterprises

Abstract

The galvanic corrosion of the couple between carbon steel(P110) and Ni-base alloy(Hastelloy C276) in solutions with pH values of 7.76,10.5,11.9 at elevated temperatures has been analyzed using weight-loss method.The experimental results show that the C276-P110 has accelerated the corrosion of carbon steel and the anode corrosion rate of the couple changes with pH value and temperature of solution.

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Key concepts: Materials science, Corrosion, Galvanic cell, Galvanic corrosion, Metallurgy, Carbon steel, Anode, Galvanic anode