Jian-wei Chang, Jun Duo, Ya-zhen Xiang, Hai-yan Yang, Wen-jiang Ding, and Ying-hong Peng, Influence of Nd and Y additions on the corrosion behaviour of extruded Mg-Zn-Zr alloys, Int. J. Miner. Metall. Mater., 18(2011), No. 2, pp. 203-209. https://doi.org/10.1007/s12613-011-0423-z
Cite this article as:
Jian-wei Chang, Jun Duo, Ya-zhen Xiang, Hai-yan Yang, Wen-jiang Ding, and Ying-hong Peng, Influence of Nd and Y additions on the corrosion behaviour of extruded Mg-Zn-Zr alloys, Int. J. Miner. Metall. Mater., 18(2011), No. 2, pp. 203-209. https://doi.org/10.1007/s12613-011-0423-z
Jian-wei Chang, Jun Duo, Ya-zhen Xiang, Hai-yan Yang, Wen-jiang Ding, and Ying-hong Peng, Influence of Nd and Y additions on the corrosion behaviour of extruded Mg-Zn-Zr alloys, Int. J. Miner. Metall. Mater., 18(2011), No. 2, pp. 203-209. https://doi.org/10.1007/s12613-011-0423-z
Citation:
Jian-wei Chang, Jun Duo, Ya-zhen Xiang, Hai-yan Yang, Wen-jiang Ding, and Ying-hong Peng, Influence of Nd and Y additions on the corrosion behaviour of extruded Mg-Zn-Zr alloys, Int. J. Miner. Metall. Mater., 18(2011), No. 2, pp. 203-209. https://doi.org/10.1007/s12613-011-0423-z
To improve the corrosion resistance of wrought magnesium alloys through rare earth (RE) additions, the corrosion behaviour of Mg-5Zn-0.3Zr-xNd (x=0, 1, and 2; wt%) and Mg-5Zn-0.3Zr-2Nd-yY (y=0.5 and 1; wt%) alloys in a 5wt% NaCl solution was investigated using immersion test and electrochemical measurements. The results of immersion test show that Mg-5Zn-0.3Zr-2Nd alloy exhibits the best corrosion resistance among the tested alloys. Electrochemical measurements show that secondary phases in RE-containing Mg-5Zn-0.3Zr alloys behave as less noble cathodes in micro-galvanic corrosion and suppress the cathodic process. The additions of Nd and Y into Mg-5Zn-0.3Zr alloy also improve the compactness of the corrosion product film and are beneficial to the corrosion resistance.
To improve the corrosion resistance of wrought magnesium alloys through rare earth (RE) additions, the corrosion behaviour of Mg-5Zn-0.3Zr-xNd (x=0, 1, and 2; wt%) and Mg-5Zn-0.3Zr-2Nd-yY (y=0.5 and 1; wt%) alloys in a 5wt% NaCl solution was investigated using immersion test and electrochemical measurements. The results of immersion test show that Mg-5Zn-0.3Zr-2Nd alloy exhibits the best corrosion resistance among the tested alloys. Electrochemical measurements show that secondary phases in RE-containing Mg-5Zn-0.3Zr alloys behave as less noble cathodes in micro-galvanic corrosion and suppress the cathodic process. The additions of Nd and Y into Mg-5Zn-0.3Zr alloy also improve the compactness of the corrosion product film and are beneficial to the corrosion resistance.
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