Exploring the viability of Mg-3Pb alloy as sacrificial anode for the cathodic protection of AZ31, AM60 and AZ91 Mg alloys
2025
García-Corredera, M. | Reyes-Riverol, R. | García-Galván, F. R. | Jiménez, José Antonio | Fajardo, Santiago | Ministerio de Ciencia, Innovación y Universidades (España) | European Commission | Consejo Superior de Investigaciones Científicas (España)
The use of a custom Mg-3Pb alloy as a sacrificial anode for protecting AZ31, AM60, and AZ91 Mg alloys in 0.1 M NaCl solution was evaluated using surface characterization, mass loss, electrochemical measurements, and gravimetric H collection. The Mg-3Pb alloy exhibited consistently lower open circuit potential values than the protected alloys and demonstrated protection efficiencies over 95 %. No polarity reversal or cathodic activation was observed, despite increased anomalous H evolution. These findings confirm the effectiveness and viability of Mg-3Pb alloy as a sacrificial anode for the cathodic protection of AZ31, AM60, and AZ91 Mg alloys.
Show more [+] Less [-]SF acknowledges the financial support under the Project PID2021-126166OB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” (European Union), and the Grant CNS2023-144665 funded by MCIN/AEI/10.13039/501100011033 and by the “European Union NextGener ationEU/PRTR”. SF and RRR thank the CSIC for the financial support under the project PIE-20216AT012.
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