Corrosion behavior of AZ91 magnesium alloy in dilute NaCl solutions |
| |
| Authors: | Lei Wang Bo-Ping Zhang Tadashi Shinohara |
| |
| Affiliation: | aSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;bMaterials Reliability Center, National Institute for Materials Science, Tsukuba Sengen 305-0047, Japan |
| |
| Abstract: | The corrosion behavior of AZ91 magnesium alloy in dilute NaCl solutions was studied using electrochemical measurements, whereby a corrosion map in terms of electrode potential and chloride concentration Cl−] was obtained. AZ91 alloy exhibited the corrosion and passivation zones in dilute NaCl solutions. The passivation zone became narrow with increasing Cl−]. The values of open-circuit potential were in the passivation zone when the Cl−] was less than 0.5 mol/L. XRD patterns showed the presence of the Mg(OH)2, Mg5(CO3)4(OH)2·8H2O and MgO phases in the corrosion product, whereas the latter two phases found in the passive film. |
| |
| Keywords: | AZ91 magnesium alloy Dilute NaCl solutions Corrosion map |
| 本文献已被 ScienceDirect 等数据库收录！ |
