Life Cycle Assessment of Al-Ce alloys

spider graph
The figure above compares scenarios for Al-Ce alloy production to a standard Al-Si alloy. Assuming CeO2 or Ce2(CO3)3 are sourced domestically, the Al-Ce performs better in all environmental categories. Sourcing them from China reduces environmental performance. 

CMI researchers at Purdue University and Eck Industries lead the activity for this highlight with researchers at Colorado School of Mines

Innovation
Demonstrated a processing route for a high performance CMI alloy that is more environmentally friendly than the incumbent material.

Achievement 
Conducted LCA for manufacturing Al-Ce alloys via direct reduction from CeO2or Ce2(CO3)3  and compared its impact to a conventional Al-Si alloy. 

Significance and Impact

  • Al-Ce alloys made from direct reduction of CeO2 or Ce2(CO3)3 perform better in all environmental categories compared to Al-Si alloys when sourced domestically. 
  • Use of secondary aluminum significantly (>35%) improves the environmental performance of the Al-Ce alloy across all categories. 
  • Loss of primary Al identified as a significant environmental hotspot.

Hub Target Addressed 
Assessing the environmental sustainability of CMI technologies.