In vitro corrosion degradation behaviour of Mg–Ca alloy in the presence of albumin

The in vitro degradation behaviour of Mg–Ca alloy was studied in the presence of albumin by in-situ observation, hydrogen evolution method and various electrochemical techniques. The corrosion and hydrogen evolution rates decreased and the formation of filiform corrosion induced by Cl − was also sig...

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Veröffentlicht in:Corrosion science 2010-10, Vol.52 (10), p.3341-3347
Hauptverfasser: Liu, C.L., Wang, Y.J., Zeng, R.C., Zhang, X.M., Huang, W.J., Chu, P.K.
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container_end_page 3347
container_issue 10
container_start_page 3341
container_title Corrosion science
container_volume 52
creator Liu, C.L.
Wang, Y.J.
Zeng, R.C.
Zhang, X.M.
Huang, W.J.
Chu, P.K.
description The in vitro degradation behaviour of Mg–Ca alloy was studied in the presence of albumin by in-situ observation, hydrogen evolution method and various electrochemical techniques. The corrosion and hydrogen evolution rates decreased and the formation of filiform corrosion induced by Cl − was also significantly inhibited due to the adsorption of albumin molecule. Moreover, the higher the concentration of albumin, the higher is the inhibitive effect. The EIS results further show that addition of albumin enhanced the charge transfer resistance and film resistance at the open-circuit potential. The synergistic effect of the negatively charged adsorbed albumin molecule and OH − has been discussed.
doi_str_mv 10.1016/j.corsci.2010.06.003
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The corrosion and hydrogen evolution rates decreased and the formation of filiform corrosion induced by Cl − was also significantly inhibited due to the adsorption of albumin molecule. Moreover, the higher the concentration of albumin, the higher is the inhibitive effect. The EIS results further show that addition of albumin enhanced the charge transfer resistance and film resistance at the open-circuit potential. The synergistic effect of the negatively charged adsorbed albumin molecule and OH − has been discussed.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.corsci.2010.06.003</doi><tpages>7</tpages></addata></record>
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source Elsevier ScienceDirect Journals
subjects A. Magnesium
Albumins
Applied sciences
B. EIS
C. Corrosion
C. Passive films
Charge transfer
Charging
Corrosion
Corrosion environments
Corrosion inhibitors
Degradation
Exact sciences and technology
Hydrogen evolution
In vitro testing
Magnesium base alloys
Metals. Metallurgy
title In vitro corrosion degradation behaviour of Mg–Ca alloy in the presence of albumin
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