Corrosion resistance and anomalous hydrogen evolution in chloride containing solutions of extruded cast and powder metallurgical Mg-1Zn alloy
The corrosion resistance and anomalous hydrogen evolution of extruded cast and powder metallurgical (PM) Mg-1Zn alloy were investigated. Potentiodynamic polarization revealed that the PM Mg-1Zn alloy actively corroded at the OCP due to enhanced cathodic kinetics, whereas the cast Mg-1Zn alloy remain...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/286567 |
| Acceso en línea: | http://hdl.handle.net/10261/286567 |
| Access Level: | acceso abierto |
| Palabra clave: | Mg alloys Powder metallurgy Extrusion Hydrogen evolution Electrochemical methods Corrosion resistance |
| Sumario: | The corrosion resistance and anomalous hydrogen evolution of extruded cast and powder metallurgical (PM) Mg-1Zn alloy were investigated. Potentiodynamic polarization revealed that the PM Mg-1Zn alloy actively corroded at the OCP due to enhanced cathodic kinetics, whereas the cast Mg-1Zn alloy remained spontaneously passive. HE measurements confirmed that the cast Mg-1Zn alloy exhibited lower HE rates than the PM Mg-1Zn alloy. R values for the PM Mg-1Zn alloy were remarkably lower than for the cast Mg-1Zn alloy. The anomalous HE rates were higher for the PM Mg-1Zn alloy with over 90% of the charge ratio associated with anomalous HE. |
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