Study on the electrolysis expansion of carbon cathode in [K3AlF6/Na3AlF6]-AlF3-Al2O3 low temperature melts
发布时间:2024-08-09
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- 所属单位:
- 冶金工程学院
- 发表刊物:
- Materials Science Forum
- 关键字:
- 中文关键字:阴极材料,电解膨胀,电流密度,过热度,铝电解,英文关键字:Cathode material, Electrolysis expansion, Ampere d
- 摘要:
- Electrolysis expansion of carbon cathodes due to alkali metal penetration in [K3AlF6/Na3AlF6]-AlF3-Al2O3 melts was tested. Effect of ampere density and superheating temperature on the electrolysis expansion was studied. A mathematical model was got to numerically describe electrolysis expansion performance of carbon cathode. The results indicated that K and Na penetrate into carbon cathode from outside to inside. Ampere density and superheating temperature had a great effect on the electrolysis expansion of carbon cathode. With the superheating temperature increasing from 10℃ to 50℃, electrolysis expansion increased from 1.41% to 2.10% gradually. With the ampere density increasing, the increase trend of electrolysis expansion was not linear. When ampere density was lower than 0.4A / cm2 and greater than 0.7A / cm2, cathode electrolysis expansion obviously increased with the increase of ampere density. Meanwhile, cathode electrolysis expansion tended to be constant as the ampere density changed at the range of 0.4A / cm2 to 0.7A / cm2.The results of the mathematical model in this study had a good agreement with the test results. This model would be helpful to accurately describe the anti-penetration performance of K and Na on the carbon cathode.
- 备注:
- EI:20131516189284
- 合写作者:
- 许鹏飞,胥建
- 第一作者:
- 朱军,李林波,方钊
- 论文类型:
- 期刊论文
- 卷号:
- 卷:749
- 期号:
- 期:
- 页面范围:
- 页:633
- 是否译文:
- 否
- 发表时间:
- 2013-03-01