Coated anodes electrochemical behavior

Hine, F., Yasuda, M., Noda, T., Yoshida, T. and Okuda, J. (1979) Electrochemical behavior of the oxide-coated metal anodes. J. Electrochem. Soc. 126,1439-1445. 

Hine F, Yasuda M, Noda T, Yoshida T, Okuda J. Electrochemical Behavior of the oxide-coated metal anodes. J Electrochem Soc 1979 126 1439-45. 

It is clearly important to know the different electrocatalytic behaviors of some potential DS A anodes and it is also important to obtain the influences of some incorporated elements on the properties of the resulting oxides coatings of DSA anodes. This present chapter focuses on our research related to electrochemical degradation of model substrates - phenol by the Sn02 anode and rare-earth doping Sn02 electrode, including fabrication electrodes, analysis method, and the evaluation of the characteristics of the electrodes. 

A variety of standard electrochemical methods may be used to probe the corrosion behavior of electroplated coatings with a particular focus on assessing the effects of galvanic coupling between the coating and the substrate (ASTM G 5, G 59, G 61 , G 82 °, G 102", and G 106 ) [22], In accordance with the mixed potential treatment of galvanic corrosion, the corrosion potential and polarization resistance are expected to be a sensitive function of the anode/cathode area, i.e., p>orosity [13,14,20,23],... 

Electrochemical tests are rapid techniques to determine mechanisms, determine the effect of various parameters on corrosion rate, and screen out a large number of materials [43]. They usually involve measurement of corrosion potentials, corrosion currents, polarization curves, and electrochemical impedance. They are used to evaluate metals and alloys and the behavior of metallic, inorganic, and oiganic coatings. The simplest test involves the measurement of the corrosion potential and its use in conjunction with other measurements. A zero resistance ammeter (ZRA) is commonly used to measure corrosion currents between dissimilar metals and alloys. Controlled potentitd tests and anodic and cathodic polarization curves using potentiostats are the most commonly used electrochemical tests. These are powerful tools for investigating the effect of various parameters on corrosion behavior. These incorporate the use of cycUc polarization and polarization resistance for localized corrosion and corrosion rate measurements. Table 4 lists electrochemical tests that can be used for corrosion tests in the automobile industry. 

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