|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Electrode Technology Symposium for Aluminum Production
||Correlation of the Creep Behavior and Crushing Strength of Cathode Materials for Aluminum Electrolysis
||Yunfei Lian, Jilai Xue
|On-Site Speaker (Planned)
Creep behavior of cathode materials is a sign of the cathode deterioration during aluminum electrolysis, while its correlation with crushing strength is interested for improving the cathode design and cell serve life. In this work, creep under external pressure was measured on line during lab aluminum electrolysis at 945︒C, and the crushing strength corresponding to certain point at the creep curves was determined off-line. The results show that the crushing strength reduces with increased degree of the creep after varying period of electrolysis time. XRD and SEM-EDS characterization indicate that the take-up of sodium during electrolysis should be the major reason for the reduced crushing strength, but the evolution in internal materials structure should have more weight in determining the cathode serve life. Quantitative information on the correlation between the creep and the crushing strength would be useful for evaluation and selection of cathode products used in reduction cells.
||Planned: Light Metals