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《Journal of Materials Science and Engineering》 2011-05
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Preparation and Electrochemical Properties of AlMgZnSnPbCuMnNi High Entropy Alloys with Low Free Corrosion Potentials

SONG Chun-hui,GAN Zhang-hua,LU Zhi-hong,CHEN Han-jie,HUANG Feng(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,School of MaterialsScience and Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)  
A series of AlMgZnSnPbCuMnNi alloys with Φ10×60mm rods have been prepared by flux melting in the atmosphere.The as-prepared alloys are investigated using electrochemical performance testing,X-ray diffractometry and scanning electron microscopy.With increasing the number of constituent elements from AlMg to AlMgZnSnPbCuMnNi,the free corrosion potential of the alloy decreases firstly and then increases and the free corrosion current density increases firstly and then decreases.The high entropy AlMgZnSnPbCuMnNi alloy has a lower free corrosion potential than the traditional anode material in spite of the contents of Al,Mg and Zn elements of the high entropy alloy are much lower than those of the traditional anode material.The free corrosion potential of the AlMgZnSnPbCuMnNi alloy is lowed to-1.33V,and the free corrosion current density is also lowed to the order of 10-5 magnitude.
【Fund】: 国家自然科学青年基金资助项目(51001083);; 湖北省教育厅青年人才资助项目(Q20081104)
【CateGory Index】: TG132.3
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