Influence of the Plating Conditions on the Structure and Corrosion Resistance of the Ni-Mn Alloy
This paper reported the electrodeposition of the nickel manganese alloy coatings from a sulphate bath using sodium citrate as complexing agent. The cyclic voltammetric experiments showed that the alloy initiative codeposition potential was about –0.457 V (vs.SCE). The effect of the plating conditions on the composition and the structure of the Ni-Mn were studied by energy dispersive X-ray spectrum and X-ray diffractometer, respectively. As a result, with the increase of the cathodic current density from 10 to 40 mA·cm-2, the manganese content of the deposit increased from 4.4 at% to 10.3 at%, and then it slightly decreased. The phase structure of the coating was face centered lattice (Fm3m) Ni-Mn solid solution. The corrosive polarization experiments indicated that the deposit could work as sacrificial coating for carbon steel in 3.5 wt% sodium chloride solution.
M.K. Lei, X.P. Zhu, K.W. Xu and B.S. Xu
S. L. Wang and W. W. Yu, "Influence of the Plating Conditions on the Structure and Corrosion Resistance of the Ni-Mn Alloy", Key Engineering Materials, Vols. 373-374, pp. 442-445, 2008