Formation of a Surface Fe-Ni Alloy

Afterward, the x-ray diffraction profiles of the treated samples were obtained, by irradiating the side where the Ni was electrodeposited [34], and the intensity Aa of the (221) peak of the a-Fe, body-centered cubic phase, and the intensity A.( of the (220) peak corresponding to the y-FeNi, face-centered cubic alloy were measured [34,35], 

The Physical Chemistry of Materials Energy and Environmental Applications 

FIGURE 5.13 Graphic representation of the formation of the Fe-Ni surface alloy. 

Consequently, it is evident that diffusion is controlling the kinetics of the process. Besides, the saturation presented at 700°C and 900°C is due to the limited amount of Ni present in the electrodeposited film. 

A similar study was carried out using a sheet of carbon steel (2317 AISI) as support instead of a sheet of iron [35], In this case, a Ni thin him of 6mg/cm2 is electrodeposited over the steel sheet. 

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