Effect of rolling processing on microstructure and electrochemical properties of high active aluminum alloy anode |
| |
Authors: | LIANG Shu-quan ZHANG Yong GUAN Di-kai TANG Yan MAO Zhi-wei |
| |
Affiliation: | School of Materials Science and Engineering, Central South University, Changsha 410083, China |
| |
Abstract: | The effect of rolling processing on the microstructure, electrochemical property and anti-corrosion property of Al-Mg-Sn-Bi-Ga-In alloy anode in alkaline solution (80 ℃, Na2SnO3+5 mol/L NaOH) was analyzed by the chronopotentiometry (E-T curves), hydrogen collection tests and modern microstructure analysis. The results show that when the rolling temperature is 370 ℃, the electrochemical activity of Al anode decreases gradually with the increase of pass deformation in rolling, while the anti-corrosion property is improved in the beginning and then declined rapidly. When the pass deformation of rolling is 40%, the Al anode has good electrochemical activity as good as the anti-corrosion property and with the increase of rolling temperature, both electrochemical activity and anti-corrosion property of Al anode increase first and then decrease. When the rolling temperature is 420 ℃, the aluminum alloy anode has the most negative electrode potential of about -1.521 V (vs Hg/HgO) and the lowest hydrogen evolution rate of 0.171 6 mL/(min·cm2). The optimum comprehensive performance of Al alloy anode is obtained. |
| |
Keywords: | Al alloy anode microstructure electrochemical property anti-corrosion property |
本文献已被 CNKI 万方数据 ScienceDirect 等数据库收录! |
|