电池用含稀土铝合金阳极性能的研究

RE-Bearing Aluminum Alloys Anode for Alkaline Battery

通过向 99.99%的纯铝中添加稀土及其它一些合金元素 ,如Ga,In ,Mg ,Sn ,Zn等 ,制得一系列含稀土的合金。在 2 5℃ ,4mol·L- 1 的KOH溶液中测定了它们的开路电位、自腐蚀速度与电化学性能。结果表明 :稀土元素能显著提高铝合金的抗腐蚀能力和阳极效率 ,Al 5Zn 0 0 1 5In 0 .1Sn 1Mg 0 .3RE具有较好的综合性能。

The aluminum alloys were made from adding RE, In, Ga, Sn, Mg and Zn. The experiments were performed at 25 ℃ and in 4 mol·L -1 KOH. The aluminum alloys open-ciecuit potentials, self-corrosion rate and electrochemical properties were studied. The results show that the aluminum alloy which contains RE can decrease the self-corrosion rate sharply,and increase the adode efficiency. Al-5Zn-1Mg-0.015In-0.1Sn-0.3RE shows a better comprehensive property.