| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Entropy Alloys IX: Alloy Development and Properties
|
| Presentation Title |
Hyperbaric Laser Chemical Vapor Deposition of High-strength Aluminium-Silicon Carbide Nanocomposite Fibers |
| Author(s) |
James Maxwell, Avinash Baji, Ben Mahler |
| On-Site Speaker (Planned) |
James Maxwell |
| Abstract Scope |
For this work, freestanding nanocomposite fibers were grown from mixtures of Bis(trimethylsilyl)methane and various organometallic and halide aluminum precursors. The resulting Al-Si-C fibers could be grown continuously to an arbitrary length—and were nanostructured due to the precursor pressures and laser powers employed. A variety of phases were found to be present, including aluminum carbide, silicon carbide, carbon, and silicon-rich phases. Scanning electron microscopy and Energy Dispersive X-ray Spectroscopy were used to characterize the composition and structure of the resulting materials. A map of the ternary phase diagram under these non-equilibrium conditions will be provided and discussed in detail. Hyperbaric laser chemical vapor deposition achieved high pressures and cooling rates sufficient for high growth rates and controlled, repeatable composition and nanostructure. Models for the growth of Al-Si-C and other nanocomposite fibers will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Other |