热处理对铝阳极在KOH溶液中性能的影响  

Effects of heat treatment on the performance of aluminum anode in KOH solutions

作　　者：刘小锋[1] 唐有根[1] 廖建平[1] 

机构地区：[1]中南大学化学化工学院化学电源与材料研究所,湖南长沙410083

出　　处：《电池工业》2009年第3期185-188,共4页Chinese Battery Industry

摘　　要：通过向铝中添加适量的Ga、Bi、Pb等元素,制备了Al-Ga-Bi-Pb合金。用SEM及EDAX对铝合金的微观结构进行了观察和分析,并通过失重法、开路电位、恒流放电等方法,研究了不同条件下退火及淬火对Al-Ga-Bi-Pb合金在4 mol/L KOH溶液中的电化学性能的影响。结果表明:退火处理加速了合金腐蚀并使阳极极化增大;淬火效果受淬火介质的冷却速度和固溶保温温度的影响较大,25℃水淬处理能够减小阳极腐蚀与极化,但70℃水淬处理则使阳极腐蚀增大。Al-Ga-Bi-Pb alloy was prepared by appending quantitative Ga, Bi, Pb. The surface morphology was characterized by SEM and EDAX. The effects of annealing and quenching at different conditions on the electrochemical performance of Al-Ga-Bi-Pb alloy in 4 mol/L KOH solutions were investigated by weight-loss method, open-circuit potential method and constant-current discharge method. The results showed that, the corrosion and cathodic polarization of aluminum alloy increased after annealing ; when quenched in water at 25℃, the corrosion and cathodic polarization decreased , but the corrosion and cathodic polarization increased when quenched in water at 70℃.

关 键 词：铝阳极 铝-空气电池 热处理 腐蚀 极化 

分 类 号：TM911.4[电气工程—电力电子与电力传动]