| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Enhancing Aluminum with Graphene: Advances in Resistance-Based Sintering for High Conductivity Composites |
| Author(s) |
Olga Eliseeva, Srinath Kistampally, Jerry Gould |
| On-Site Speaker (Planned) |
Olga Eliseeva |
| Abstract Scope |
Resistance-based sintering (RBS) effectively consolidates metals like aluminum, copper alloys, steels, and titanium by applying current and pressure to powder, generating heat and enabling sintering. Unlike spark plasma sintering (SPS), RBS uses higher current densities and direct current application. This allows for reduction of consolidation times (150 ms to 4 s) and eliminating the need for atmospheric shielding. This process also allows for complex metal matrix composites (MMC) to be created. In this study, a sintered graphene-enhanced aluminum composite was created, showing a 10% conductivity improvement with 0.5% graphene. This conductivity was the result of discontinuous graphene homogeneously spread throughout the matrix. Additional trials were done hot compression testing sintered samples in an effort to realign the graphene along specific planes in the structure. Optimal hot compression conditions increased conductivity by 47%, achieving directional conductivity within 10% of that of copper, potentially replacing copper in many applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Aluminum, Powder Materials |