ChemInform Abstract: The Electrochemical Behavior of Stainless Steels Following Surface Modification in Cerium-Containing Solutions.
✍ Scribed by C. B. BRESLIN; C. CHEN; F. MANSFELD
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 27 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
✦ Synopsis
The Electrochemical Behavior of Stainless Steels Following Surface Modification in Cerium-Containing Solutions.
-Simple immersion of SS304, SS316, and SS316L steel electrodes in Ce-containing solutions at elevated temp. has no effect on the rate of oxygen reduction reaction. However polarization of the treated electrodes in the deep cathodic region or polarization of untreated electrodes under cathodic conditions in Ce-containing solutions leads to a significant reduction of the rate of oxygen reduction reaction. The inhibition of the cathodic reactions seems to depend on the nature or oxidation state of deposited cerium oxides/hydroxides, which have little effect on the anodic polarization behavior. Increases in the pitting potentials and reductions of the passive current densities of steels upon treatment in boiling Ce solutions are attributed to the removal of MnS inclusions and to passivation by nitrate components in the solutions, respectively.