Influence of bismuth on electrochemical behavior of sacrificial aluminum anode
作者： M. Karaminezhaad , A.H. Jafari , A. Sarrafi , Gh. Safi
DOI: 10.1108/00035590610650802
关键词: Anode 、 Gallium 、 Bismuth 、 Anodic protection 、 Alloy 、 Corrosion 、 Materials science 、 Metallurgy 、 Galvanic anode 、 Cathodic protection 、 General Materials Science 、 General Chemical Engineering
摘要: Purpose – To evaluate bismuth, which is inexpensive and non‐toxic, as a substitute for mercury, indium gallium in Al‐5%Zn‐X sacrificial anode.Design/methodology/approach The effect of bismuth on the electrochemical behavior Al‐5%Zn‐Bi artificial sea water environment was investigated. Potentiodynamic, potentiostatic, galvanostatic, weight loss efficiency test methods were employed. surface specimens studied by SEM analyzed EDAX. Image analyzer also used.Findings Adding 0.3‐0.5%Bi to Al‐5%Zn alloy produces considerable active sites anode and, when corrosion process continues, will be uniform joining these numerous shallow pits high emerge.Research limitations/implications Preventing segregation good casting practice or homogenization heat treatment helpful prevent unpredicted localized investigating processes performance thi...
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