Cast Al-5 wt% Zn alloys are well known for their cathodic protection applications as sacrificial anodesAnode. Based on the previous studies, the electrochemical behaviorElectrochemical behavior of these anodes can be enhanced by addition of alloying elementsAlloying elements. These elements can be modifiers as magnesium (Mg), barium (Ba), (Cd) and etc. or they can act as depassivators like in the case of Indium (In), tin (Sn), titanium (Ti) and thallium (Tl). In the current investigation, alloying additivesAdditives includes Mg and Sn were added during melting of Al-5 wt% Zn alloy and the samples were immersed in a sodium chloride solution for 15 days to investigate their behavior as sacrificial anodesAnode. The results were compared to the standard Al-5Zn-0.02In anodesAnode. It was observed that addition of Sn or Mg increases the corrosion rate if added in certain amounts, exceeding the amount of addition results in adverse effects in terms of the alloy application as sacrificial anodes.
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- Influence of Alloying Additives on the Electrochemical Behavior of Cast Al-5Zn Alloys
Mohamed Eissa Moussa
in-adhesives, MKVS, Zühlke/© Zühlke, Nordson/© Nordson, ViscoTec/© ViscoTec, Hellmich GmbH/© Hellmich GmbH