The
objective of this work was to investigate the electrochemical behavior
of Mg40Ca and Mg-Ca-Gd alloys for biomedical application as implantable
absorbable devices. Electrochemical tests were performed under a
physiological electrolyte of 0.9% NaCl, pH=7.4, 37°C, at a rate of 1,
0.1 and 0.01 V/s. Polarization curves showed similar mechanism of
electrochemical behavior between alloys. The ternary Mg-Ca-Gd alloy
showed lower values of current density and corrosion potential than
Mg40Ca alloy. The Mg40Ca based binary alloy showed higher values of
corrosion susceptibility and lower polarization resistance than Mg-Ca-Gd
alloy. Corrosion resistance improvements were achieved in ternary Mg
based alloy with Gd and Ca content. The alloy with Gd and Ca content
seemed adequate electrochemical resistance to attend biomedical demand.
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https://lupinepublishers.com/biomedical-sciences-journal/fulltext/corrosion-resistance-of-absorbable-mg-ca-based-alloys-in-physiological-environment.ID.000116.php
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