Observation Examples of Metals
Observation of Plating Interface
A copper (Cu) plating was applied to iron (Fe), a cross section of the sample was excised, and the electric potential at their interface was measured. In the topographic image at the left, the interface is not evident. In the electric potential image at the right however, measurements on the copper side were approximately 0 V, while those on the iron side were a high 90 mV.