About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Lightweight, Electrically Conductive, and Thermally Insulating porous ceramics through Stereolithography 3D Printing |
Author(s) |
Zipeng Guo, CHI ZHOU, SHENQIANG REN, JASON ARMSTRONG |
On-Site Speaker (Planned) |
Zipeng Guo |
Abstract Scope |
Ceramics have strong ionic and covalent bonds to firmly pack the atoms, ensuring outstanding structural integrity. However, most ceramics are considered electric insulators because the intrinsic dense structure does not allow free electrons to move, resisting the electric current flows. We report an additive manufacturing strategy that uses mesoporous silica and graphene to fabricate electrically conductive ceramic architectures via stereolithography printing. Graphene percolates into the porous silica to establish a uniform conductive graphitic network embedded in the silica-silicon carbide scaffold. Correspondingly, it shows high electrical conductivity measured up to 1,000S/m and maintains stability under high temperatures above 600C. Benefit from the ultra-porous silica feedstock, the 3D-printed conductive ceramic demonstrates outstanding lightweight and thermal insulation properties. Furthermore, the mechanical performance can be effectively reinforced by densifying the microstructures via spark plasma sintering treatment. The proposed AM strategy widens the potential of ceramics as structural materials, offering promising pathways toward high-temperature applications. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |