TY - JOUR
T1 - Effect of Zn addition on corrosion resistance of Cu-10Ni alloy in clean and sulphide contaminated seawater
AU - Tandon, Vipin
AU - Patil, Awanikumar P.
AU - Bansod, Ankur
N1 - Publisher Copyright:
© 2017 Canadian Institute of Mining, Metallurgy and Petroleum.
PY - 2018/4/3
Y1 - 2018/4/3
N2 - Cu-10Ni alloy has an outstanding resistance to corrosion in seawater due to formation of protective Cu2O film. However, in presence of S2− ions, it suffers accelerated corrosion. The present paper investigates the corrosion behaviour of Cu-10Ni, Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys using weight loss, electrochemical impedance spectroscopy and potentiodynamic polarisation technique. The experiments were performed in clean seawater and sulphide contaminated seawater. The Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys were found to exhibit lower corrosion rate than Cu-10Ni alloy in clean and sulphide contaminated seawater. Lower corrosion rate of Zn containing alloys in clean seawater is attributed to the incorporation of Zn2+ ions in Cu2O lattice. Lower corrosion rate of Zn containing alloys sulphide contaminated seawater is attributed to formation of ZnS in the film.
AB - Cu-10Ni alloy has an outstanding resistance to corrosion in seawater due to formation of protective Cu2O film. However, in presence of S2− ions, it suffers accelerated corrosion. The present paper investigates the corrosion behaviour of Cu-10Ni, Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys using weight loss, electrochemical impedance spectroscopy and potentiodynamic polarisation technique. The experiments were performed in clean seawater and sulphide contaminated seawater. The Cu-10Ni-6Zn and Cu-10Ni-12Zn alloys were found to exhibit lower corrosion rate than Cu-10Ni alloy in clean and sulphide contaminated seawater. Lower corrosion rate of Zn containing alloys in clean seawater is attributed to the incorporation of Zn2+ ions in Cu2O lattice. Lower corrosion rate of Zn containing alloys sulphide contaminated seawater is attributed to formation of ZnS in the film.
UR - https://www.scopus.com/pages/publications/85034660204
UR - https://www.scopus.com/inward/citedby.url?scp=85034660204&partnerID=8YFLogxK
U2 - 10.1080/00084433.2017.1403073
DO - 10.1080/00084433.2017.1403073
M3 - Article
AN - SCOPUS:85034660204
SN - 0008-4433
VL - 57
SP - 194
EP - 200
JO - Canadian Metallurgical Quarterly
JF - Canadian Metallurgical Quarterly
IS - 2
ER -