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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 Effective Permittivity of Metal/Ceramic Composites and Microwave Heating Characteristics
Author(s) Noboru Yoshikawa, Sinya Ohgane, Naoki Ohgane, Takane Watanabe, Sergey Komarov
On-Site Speaker (Planned) Noboru Yoshikawa
Abstract Scope Metal powder compacts can be well heated in microwave magnetic field, however they cannot be heated well anymore if sintering progresses and become dense, because they become a bulk body and microwave cannot penetrate into the internal area. On the other hand, microwave penetration depth into lossy ceramic materials is not large enough and the volumetric heating is not necessarily easy, either. The authors have studied the composite bodies composed of metal particles and low loss ceramics for attaining the rapid and volumetric heating. Measurement of physical properties of the composites such as the effective permittivity and effective conductivity was conducted and compared with their heating characteristics by microwave. In this paper, it is intended to compare and summarize the physical property – heating rate relationships of several materials’ systems.
Proceedings Inclusion? Planned: At-meeting proceedings


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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