Inhibitor of corrosion and stress corrosion cracking containing nickel boride (NiB) in the secondary side of steam generator tubes in a nuclear power plant and inhibiting method using the same

摘要

An inhibitor of corrosion and stress corrosion cracking including nickel boride (NiB) in a secondary side of a steam generator tube in a nuclear power plant and an inhibition method using the same. The nickel boride (NiB) according to the present invention reduces stress corrosion cracking in a testing plate simulating the steam generator tube in the nuclear power plant in a highly caustic condition when compared with a reference solution, and increases corrosion resistance by reducing corrosion current density and oxide thickness. Accordingly, nickel boride may be effectively used to inhibit corrosion and stress corrosion cracking in the secondary side of the steam generator tube in the nuclear power plant.