Comparative Study on Thermodynamical and Electrochemical Behavior of Al_(88)Ni_6La_6 and Al_(86)Ni_6La_6Cu_2 Amorphous Alloys  

作　　者：吴学庆 马蓦 檀朝桂 王秀锋 林建国 

机构地区：[1]Faculty of Material & Photoelectronic Physics,Xiangtan University [2]Department of Physics and Information Engineering,Hunan Institute of Humanities,Science and Technology,Loudi 417000,China

出　　处：《Journal of Rare Earths》2007年第3期381-384,共4页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(50371072)

摘　　要：Two amorphous ribbons with the compositions of Al88Ni6La6 and Al86Ni6La6Cu2 were made using the melt-spun method,and their thermal response and electrochemical behavior were studied comparatively.Differential scanning calorimetry（DSC）and electrochemical polarization measurements indicated that Al86Ni6La6Cu2 exhibited slightly higher crystallization temperature（Tx）,lower melting point（Tl）and better corrosion resistance in 0.01 mol·L-1 NaCl alkaline solution.These results demonstrated that Cu（2%）addition could slightly promote the glass forming ability,but it could greatly improve the corrosion resistance of Al88Ni6La6 alloy in 0.01 mol·L-1 NaCl alkaline solution.Two amorphous ribbons with the compositions of Al88Ni6La6 and Al86Ni6La6Cu2 were made using the melt-spun method,and their thermal response and electrochemical behavior were studied comparatively.Differential scanning calorimetry（DSC）and electrochemical polarization measurements indicated that Al86Ni6La6Cu2 exhibited slightly higher crystallization temperature（Tx）,lower melting point（Tl）and better corrosion resistance in 0.01 mol·L-1 NaCl alkaline solution.These results demonstrated that Cu（2%）addition could slightly promote the glass forming ability,but it could greatly improve the corrosion resistance of Al88Ni6La6 alloy in 0.01 mol·L-1 NaCl alkaline solution.

关 键 词：Al-based amorphous glass forming ability corrosion resistance rare earths 

分 类 号：TG166[金属学及工艺—热处理]