Comparative Study on Thermodynamical and Electrochemical Behavior of Al_(88)Ni_6La_6 and Al_(86)Ni_6

• 作 者: 吴学庆 马蓦 檀朝桂 王秀锋 林建国
• 机 构: Faculty of Material & Photoelectronic Physics Xiangtan University,Department of Physics and Informat
• 出 处: Journal of Rare Earths
• 发表日期: 2007年03期
• 关键词: alkaline calorimetry amorphous melting slightly nanometer crystalline heating di

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. 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. This results in 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.