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Meeting Materials Science & Technology 2019
Symposium Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
Presentation Title Radio Frequency and Microwave Heating of Preceramic Polymers and its Application in Silicon Carbide Processing
Author(s) Nutan Patil, Miladin Radovic, Mohammad Saed, Micah Green
On-Site Speaker (Planned) Nutan Patil
Abstract Scope Here, we demonstrate molecular heating methods like microwave and noncontact Radio Frequency (RF) for processing of silicon carbides (SiC) via preceramic polymer (polycarbosilane) route using electromagnetic susceptors. We use these volumetric heating methods for applications in 3D printing of SiC, fiber manufacturing and ceramic matrix composite (SiC/SiC) manufacturing. In our work, we have focused on two susceptor types: a) Multiwalled Carbon nanotubes (MWCNT) (b) SiC fibers. We show that polycarbosilanes have minimum response to RF and addition of susceptor like MWCNT results in rapid heating of these polymers. We also report for the first time change in dielectric constant and AC conductivity of the polycarbosilane-MWCNT composites as it heats and transforms. We tested dielectric heating response of commercial SiC fibers (Hi-Nicalon and Syramic type) and SiC nano particles. SiC fibers (Hi-Nicalon) show high dielectric heating and can be used to cure ceramic matrix composites
Proceedings Inclusion? Planned: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Advanced In-Line Nanocrystallization of Amorphous Metal Ribbon (AMR) Alloys Through Mechanical and Electromagnetic Fields
An Irreversible Thermodynamic Perspective on Chemical Reaction Kinetics in Ceramic Processing under Resonant Microwave-fields
Characterization of the Native Thin Oxide Layer of Copper Metal Powder Sintered via Microwaves
Effect of Alternating Electromagnetic Field on Extracellular Polymeric Substances Derived from Biofilms And Its Mechanism
Effect of Pulsed Electric Current on Metastable Austenitic Steel
Effective Permittivity of Metal/Ceramic Composites and Microwave Heating Characteristics
Electric Current Annealing of Zircaloy Alloy and Associated Mechanisms
Electro-pulse and High Magnetic Field Annealing of Cold-Rolled NiFe
Exploration of Phase Transformations in alnico and its Implications for Magnetic Annealing
In-situ High Spatial Resolution Two-color Thermography in Micrwoave Selective Heating System
Locally Activated Solution Processing Would be Preferable Than General Hydrothermal/Solvothermal Processing Using Autoclaves
Magnetic Field-assisted Electrodeposition of Nickel Composite Coatings
Magnetic Field-Assisted Freeze Casting of Porous Ceramic Structures
Microwave Effects in Heterogenous Materials: A Study on Catalysis
Modeling Microstructural Evolution under Applied Magnetic Fields
P2-70: Characterization of Graphite-Si-SiC Ceamics Processed by Microwave Assisted Reactive Melt Infiltration
Proposal of Mining Method of Methane Hydrate by Microwave
Radio Frequency and Microwave Heating of Preceramic Polymers and its Application in Silicon Carbide Processing
Stage I Laser Flash Sintering
Surface-charge Mobility Theory: An Explanation for Certain "Microwave Effects"
Thermal Analysis of a High Temperature Coaxial Dielectric Test Cell
Ultrasonic and Vibration Enhanced Materials Processing
Vapor Dephosphorization Kinetics from Steel Making Slag by Microwave Rapid Heating

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