The galvanicpotential moved negatively, which shows the cerium film inhibits the cathodic reaction.
电偶电位随时间负移，这是腐蚀反应中阴极过程受阻滞的表现。
2
The metal with a lower potential in the galvanic cell will be anodic and will corrode.
原电池中具备较低电势的金属是阳极的而且会受到腐蚀。
3
The result of polarization resistance of square wave, galvanic step and potential scan are according to the result of the electrochemical impedance spectrum.