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首页> 外文会议>2006 BIMW >Anti-oxidation and Anti-corrosion Properties of Al-Si Metal Anodes
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Anti-oxidation and Anti-corrosion Properties of Al-Si Metal Anodes

机译：铝硅金属阳极的抗氧化和抗腐蚀性能

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Al-Si metal anode was fabricated by cold-press sintering with Al and Si as embedded powder in argon atmosphere. The anti-oxidation in the air and anti-corrosion in molten cryolite properties of Al-Si metal anode at high temperature were examined. The experimental results showed that the oxidation kinetics curve obeyed the parabolic law. The corrosion behavior Al-Si metal anode was studied in electrolysis test. The electrolyte consisted of Na_3AlF_6(90 wt%),CaF_2(5 wt%) and Al_2O_3(5 wt%) which corresponded to molecular ratio of 2.4. The results indicated that the cell voltage was stable and the electric polarized corrosion rate was higher than the static corrosion rate of metal anode. SEM photographs showed an oxidation film formed in the surface of Al-Si metal anode which can obstruct the further corrosion in molten cryolite. It may be concluded that Al-Si metal anode has good combination property and can replace the carbon anode in the aluminum cell.
机译：Al-Si金属阳极是通过在氩气气氛中以Al和Si为包埋粉末进行冷压烧结而制得的。研究了高温下Al-Si金属阳极在空气中的抗氧化性能和熔融冰晶石性能的抗腐蚀性能。实验结果表明，氧化动力学曲线符合抛物线规律。通过电解实验研究了铝硅金属阳极的腐蚀行为。电解质由Na_3AlF_6（90wt％），CaF_2（5wt％）和Al_2O_3（5wt％）组成，对应于2.4的分子比。结果表明，电池电压稳定，电极化腐蚀速率高于金属阳极的静态腐蚀速率。 SEM照片显示在Al-Si金属阳极的表面形成了一层氧化膜，该氧化膜可以阻止熔融冰晶石中的进一步腐蚀。可以得出结论，铝硅金属阳极具有良好的结合性能，可以代替铝电池中的碳阳极。

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