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Glass-forming ability,microhardness, corrosion resistance,and dealloying treatment of Mg60-xCu40Ndx alloy ribbons
引用本文:Hao-yi Chi,Zhen-gui Yuan,Yan Wang,Min Zuo,De-gang Zhao,Hao-ran Geng. Glass-forming ability,microhardness, corrosion resistance,and dealloying treatment of Mg60-xCu40Ndx alloy ribbons[J]. 矿物冶金与材料学报, 2017, 24(6): 708-717. DOI: 10.1007/s12613-017-1454-x
作者姓名:Hao-yi Chi  Zhen-gui Yuan  Yan Wang  Min Zuo  De-gang Zhao  Hao-ran Geng
作者单位:Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, School of Materials Science and Engineering, University of Jinan, Jinan 250022, China
摘    要:The influence of Nd addition on the glass-forming ability (GFA), microhardness, and corrosion resistance of Mg60-xCu40Ndx (x=5, 10, 15, 20, and 25, at%) alloys were investigated by differential scanning calorimetry, Vickers-type hardness tests, and electrochemical methods. The results suggest that the GFA and microhardness of the amorphous alloys increase until the Nd content reaches 20at%. The corrosion potential and corrosion current density obtained from the Tafel curves indicate that the Mg35Cu40Nd25 ternary alloy exhibits the best corrosion resistance among the investigated alloys. Notably, nanoporous copper (NPC) was synthesized through a single-step dealloying of Mg60-xCu40Ndx (x=5, 10, 15, 20, and 25) ternary alloys in 0.04 mol·L-1 H2SO4 solution under free corrosion conditions. The influence of dealloying process parameters, such as dealloying time and temperature, on the microstructure of the ribbons was also studied using the surface diffusivity theory. The formation mechanism of dealloyed samples with a multilayered structure was also discussed.

关 键 词:amorphous alloys   glass-forming ability   microhardness   corrosion resistance   dealloying

Glass-forming ability,microhardness, corrosion resistance,and dealloying treatment of Mg60−xCu40Ndx alloy ribbons
Hao-yi Chi,Zhen-gui Yuan,Yan Wang,Min Zuo,De-gang Zhao,Hao-ran Geng. Glass-forming ability,microhardness, corrosion resistance,and dealloying treatment of Mg60−xCu40Ndx alloy ribbons[J]. International Journal of Minerals,Metallurgy and Materials, 2017, 24(6): 708-717. DOI: 10.1007/s12613-017-1454-x
Authors:Hao-yi Chi  Zhen-gui Yuan  Yan Wang  Min Zuo  De-gang Zhao  Hao-ran Geng
Affiliation:1.Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, School of Materials Science and Engineering,University of Jinan,Jinan,China
Abstract:The influence of Nd addition on the glass-forming ability (GFA), microhardness, and corrosion resistance of Mg60?x Cu40Nd x (x = 5, 10, 15, 20, and 25, at%) alloys were investigated by differential scanning calorimetry, Vickers-type hardness tests, and electrochemical methods. The results suggest that the GFA and microhardness of the amorphous alloys increase until the Nd content reaches 20at%. The corrosion potential and corrosion current density obtained from the Tafel curves indicate that the Mg35Cu40Nd25 ternary alloy exhibits the best corrosion resistance among the investigated alloys. Notably, nanoporous copper (NPC) was synthesized through a single-step dealloying of Mg60?x Cu40Nd x (x = 5, 10, 15, 20, and 25) ternary alloys in 0.04 mol·L?1 H2SO4 solution under free corrosion conditions. The influence of dealloying process parameters, such as dealloying time and temperature, on the microstructure of the ribbons was also studied using the surface diffusivity theory. The formation mechanism of dealloyed samples with a multilayered structure was also discussed.
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