Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8004135 | Journal of Iron and Steel Research, International | 2017 | 10 Pages |
Abstract
The effect of solution pH, Cl- concentration and temperature on the electrochemical corrosion behavior of PH13-8Mo steel in acidic solution was investigated by using the electrochemical tests, scanning electron microscopy and X-ray photoelectron spectroscopy. The PH13-8Mo martensitic precipitation hardened stainless steel is in the passivity state when the pH value is above 3. 0, below which the anodic polarization curves of the steel are actively dissolved. The corrosion current density gradually decreases with increasing the solution pH and decreasing Cl- concentration and solution temperature. Pits are initiated on the sample surface in the presence of the Cl- and gradually developed into uniform corrosion with increasing the Cl- concentrations. Moreover, the corrosion is more serious with an increase in solution temperature.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Xue-ying Li, Chun-hua Fan, Qian-lin Wu, Li-hua Dong, Yan-sheng Yin, Chang-jun Wang, Jian-xiong Liang,