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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
Presentation Title Metastable Silicon Nanocomposites via Plasma Synthesis and Spark Plasma Sintering
Author(s) Steven Herzberg, Devin Coleman, Christian Roach, Sabah Bux, Suveen Mathaudhu, Lorenzo Mangolini
On-Site Speaker (Planned) Steven Herzberg
Abstract Scope Pervasively metastable materials have been shown to have enhanced and unique properties over their traditional equilibrium phases. These enhancements have largely been demonstrated in thin films, however “bulk” processing methods have yet to be sufficiently explored. This project explores a unique approach for creating pervasively metastable, bulk nanocomposite materials via low pressure, non-thermal plasma synthesis of non-equilibrium nanoparticles and the subsequent consolidation by spark plasma sintering (SPS). By using silane and methane precursors, plasma synthesis is used to create amorphous, non-stoichiometric silicon carbide nanopowders. SPS consolidates and crystallizes the nanopowder into a bulk silicon-silicon carbide nanocomposite. The silicon carbide remains dispersed within the silicon matrix, allowing for the formation of metastable nanostructures with unique functional properties that cannot be created through conventional powder processing techniques. The effects of these nanostructures on the thermoelectric properties of the silicon-silicon carbide system are explored.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Controlling Functional Properties in Oxide Nanocomposites via Strain, Defects and Interfaces
Controlling Nanoscale Eutectic Microstructures in Directionally Laser Melted Al-Cu Alloyed Thin Films
Development of Reactive Molecular Dynamics (MD) and Hybrid Reverse Monte Carlo (HRMC) Modeling to Synthesize Amorphous Boron Carbide
Discoveries of Q-carbon and Q-BN and Direct Conversion of Carbon into Diamond and h-BN into c-BN
Dynamically Evolving Metastability in an Atomic Hourglass: Temporal Control of the Metal-insulator Transition of VO2 by a Mobile Dopant
Effect of Interfacial Strain on the Point-defect Energetics in LaNiOx
Emergence of Shallow Energy Levels in B-doped Q-carbon: A high- temperature Superconductor
Enhanced Field Emission of CNT-W Nanowire Hierarchical Emitters
Fabrication of Nanodiamond and Q-carbon by Ultrafast Quenching of Carbon Structures for Electron Field Emission Devices
Formation of Reduced Graphene Oxide/amorphous Carbon P-N Junctions via Highly Nonequilibrium Route of Nanosecond Laser Irradiation
Heat Capacity and Free Energy of Ni-Fe Nanocrystals
In-situ and Real Time Chemical Analysis of Complex Oxide Thin Film Surfaces using Pulsed Laser Deposition
Laser Processing in the Transmission Electron Microscope
Metastable Silicon Nanocomposites via Plasma Synthesis and Spark Plasma Sintering
Microstructure Morphology and Concentration Modulation of Bicontinuous Nanocomposite Thin-films during Physical Vapor Deposition
Morphological Evolution of Phase-separated Domains in Vapor-deposited Polycrystalline Alloy Films
N-1: In-situ Analysis of IR Laser Radiation Damage on Nano-structured MoS2
N-2: Scalable Synthesis of Graphene Quantum Dots and Its Application in Bioimaging
N-3: Synthesis of Mesoporous Metal-Silicates via Silicate-Exfoliation on Metal Hydroxides
Quasi-one-dimensional Mo Chains for Efficient Hydrogen Evolution Reaction
Recent Advances in Thin Film Thermoelectrics: SnSe and Beyond
Stabilization of High-temperature Polymorphs of SrSnO3 at Room Temperature via Epitaxy
Surface Chemistry Evolution in Ti-BNNT System Processed by SPS and its Correlation to Physico-chemical and Mechanical Properties
Synthesis and Densification of Functional Metal-oxide Nano Bulk Composite with Far from Equilibrium State
Tunable 2D Materials from Synthesis to Applications
Understanding the Effects of Lattice Strain on MoS2 through Irradiation

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