About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Effects of CNT reinforcement on the electrical and thermal conductivity of B4C-TiB2 ceramics fabricated via SPS |
| Author(s) |
Berkay Uygun, Demet Aydogmus, Filiz Sahin |
| On-Site Speaker (Planned) |
Filiz Sahin |
| Abstract Scope |
Boron carbide (B4C) is a wide bandgap semiconducting ceramic with covalent bonding, resulting in low electrical conductivity and limited sinterability. These limitations can be addressed by incorporating conductive phases and using current-assisted sintering methods. In this study, titanium diboride (TiB2) and carbon nanotubes (CNTs) were added to B4C to produce (B4C-TiB2)-CNT composites via spark plasma sintering (SPS). SPS enables efficient densification through pulsed electric current. A fixed 15 vol% TiB2 was used for its high electrical and thermal conductivity, and CNTs were introduced at 1, 2, and 3 vol% to further enhance conductivity. Sintering was conducted at 1600 C under vacuum. Electrical and thermal conductivites were measured using the four-point probe and laser flash methods and correlated with SEM-based microstructural analysis. The results reveal the synergistic role of TiB2 and CNTs in improving conductivity and facilitating sintering in B4C-based ceramics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Process Technology, Composites |