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首页> 外文会议>Light Metals symposium >Effect of additive CaO on corrosion resistance of 10NiO-NiFe{sub}2O{sub}4 ceramic inert anodes for aluminium electrolysis
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Effect of additive CaO on corrosion resistance of 10NiO-NiFe{sub}2O{sub}4 ceramic inert anodes for aluminium electrolysis

机译：添加剂CaO对10nio-nife {sub} 20} 20×4的耐腐蚀性铝电解陶瓷惰性阳极的影响

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摘要

10NiO-NiFe{sub}2O{sub}4 composite ceramic inert anodes with the additive CaO content of 0, 0.5, 1, 2 and 4%(by weight) were prepared and their corrosion resistance to Na{sub}3AlF{sub}6-K{sub}3AlF{sub}6-Al{sub}2O{sub}3 melts was studied in laboratory electrolysis tests. The results show that the content of additive CaO in ceramic inert anodes has great effects on the concentration of impurities in electrolyte. The addition of the oxide CaO to ceramic inert anode is adverse to improve its corrosion resistance. The additive CaO existed in the grain boundary accelerates the corrosion of ceramic inert anode.
机译：10nio-nife {sub} 2o {sub} 4具有0,0.5,1,2和4％（重量）的添加剂CaO含量的复合陶瓷惰性阳极，并对Na {sub}的耐腐蚀性α在实验室电解试验中研究了6-k {Sub} 3ALF {Sub} 6-Al {Sub} 2O {Sub} 3熔体。结果表明，陶瓷惰性阳极中添加剂CaO的含量对电解质中杂质的浓度具有很大的影响。向陶瓷惰性阳极加入氧化物CaO是不利的，不能改善其耐腐蚀性。晶界中存在的添加剂CaO加速了陶瓷惰性阳极的腐蚀。

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