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首页> 外文期刊>Journal of Applied Electrochemistry >Influence of alloying additives on the performance of commercial grade aluminium as galvanic anode in alkaline zincate solution for use in primary alkaline batteries
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Influence of alloying additives on the performance of commercial grade aluminium as galvanic anode in alkaline zincate solution for use in primary alkaline batteries

机译：合金添加剂对一次碱性电池用碱性锌酸盐溶液中商业级铝作为电阳极的性能的影响

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摘要

The self-corrosion of different grades of commercial aluminium such as 2S, 3S, 26S and 57S in 4 M NaOH containing 0.6 M ZnO has been determined by weight loss measurements. It is found that 26S and 57S aluminium exhibit negligible corrosion rates in the range 0.05–0.06 mg cm−2 min−1, which can be attributed to the formation of a zincate coating on the aluminium surface. The influence of zincating on the performance of binary and ternary alloys of 26S and 57S aluminium obtained by incorporating alloying elements such as zinc, indium, thallium, gallium and tin as galvanic anode in 4 M NaOH containing 0.6 M ZnO has been examined by studying self corrosion, steady state open circuit potential, galvanostatic polarization and anode efficiency. It is found that zincated ternary alloys of 26S and 57S aluminium containing zinc and indium can serve as good galvanic anodes in alkaline medium. AC impedance measurements and X-ray diffraction studies have been carried out to understand the nature of the film formed on the aluminium surface.
机译：通过失重测量已经确定了不同等级的商品铝（例如2S，3S，26S和57S）在含有0.6 M ZnO的4 M NaOH中的自腐蚀。发现26S和57S铝在0.05–0.06 mg cm-2 min-1 范围内的腐蚀速率可忽略不计，这可以归因于铝表面形成锌酸盐涂层。通过自我研究，研究了锌化对通过将合金元素（如锌，铟，th，镓，锡和锡）作为电阳极加入到含有0.6 M ZnO的4 M NaOH中获得的26S和57S铝二元和三元合金性能的影响。腐蚀，稳态开路电位，恒电流极化和阳极效率。发现含有锌和铟的26S和57S铝的镀锌三元合金可以在碱性介质中充当良好的电阳极。已经进行了交流阻抗测量和X射线衍射研究，以了解在铝表面上形成的膜的性质。

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