About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Advanced Functionality: Sustainable and Eco-Friendly Materials and Applications
|
| Presentation Title |
In situ synthesis of Al-AlN lamellar composites by arc plasma-induced accelerated volume nitridation |
| Author(s) |
Jeongwon Choi, Je In Lee |
| On-Site Speaker (Planned) |
Je In Lee |
| Abstract Scope |
Thermal expansion and conduction behaviors of heat sink materials are crucial for microelectronic packaging. High thermal conductivity (TC) is required to remove the heat generated on component parts, and a low coefficient of thermal expansion (CTE) is essential to reduce the thermal stress and improve the dimensional stability of electronic packaging. In the present study, we report a new type of aluminum nitride (AlN) reinforced aluminum matrix composites with lamellar architecture. The novel composites are fabricated by in situ reaction between liquid aluminum and nitrogen gas through conventional arc melting. We demonstrated that a volume fraction of AlN reinforcements can be increased up to around 30% depending on the nitridation reaction time and matrix composition. Our results propose that the in situ lamellar Al-AlN composites could exhibit an attractive combination of high TC and low CTE, which is highly desirable for heat sink materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Aluminum, Ceramics |