硼和稀土对铝阴极板耐腐蚀性能的影响

通过添加适量B和稀土元素制备6种成分的铝合金阴极板材料.采用模拟工业环境浸泡腐蚀实验、电化学阻抗谱实验等方法探究实验合金的耐腐蚀性能.结果表明，同时添加B和稀土元素能有效降低铝合金中铁杂质含量，合金中的含铁相由针片状转变为细小颗粒状；这种铝合金阴极板材料在模拟工业环境浸泡减重实验中减重最缓慢，电化学阻抗谱拟合结果中阻抗弧半径最大，具有较好的耐腐蚀性能. 

Effect of boron and rare earth elements on corrosion property of aluminum cathode plate

Six aluminum cathode materials with different compositions were prepared by adding boron and rare earth elements to the commercial pure aluminum melts in the process of smelting and casting. The corrosion property of the test materials was investigated by using soaking and electrochemical experiments. The results show that boron and rare earth elements can effectively reduce the content of iron impurity and transform them from β-Fe to fined-grain morphology. The results of thermostatic water bath soaking and electrochemical experiments illustrate that the corrosion property of aluminum cathode plates improves by adding boron and rare earth elements. As a result, adding both boron and rare earth elements to the aluminum cathode plate can obtain the best corrosion property.