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Meeting MS&T21: Materials Science & Technology
Symposium Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
Presentation Title Surface Oxidation Behavior of FeNi-based Metal Amorphous Nanocomposite (MANC) for High Speed Motor Applications
Author(s) James Egbu, Paul Ohodnicki, Ruishu Wright, John Baltrus, Michael E McHenry
On-Site Speaker (Planned) James Egbu
Abstract Scope New interest in high performance soft magnetic materials (SMMs) have been fueled by the need to lower losses at higher operating frequencies while maintaining high flux density and tunable permeability in electrical motors, transformer, and generator applications. Conventional SMMs like electrical steels and Fe-based metal amorphous nanocomposite (MANC) alloys are dominated by eddy current losses at high frequencies. Recent breakthrough in high-performance FeNi MANC have shown promise in reducing eddy current losses as compared to electrical steels. Their intrinsic adherent native surface oxide layer provides sufficient electrical insulation to reduce interlaminate eddy current losses. However, notwithstanding advances in MANCs, there exists a gap in literature on investigations of the surface oxide layer responsible for significant reduction of interlaminate eddy current losses in magnetic cores. This work presents a detailed characterization of the surface oxide, oxidation behavior, and relationship between oxide thickness and resistivity of a new FeNi MANC alloy (Fe70Ni30)80Nb4B14Si2.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

2d Crystalline Donors and Acceptors: Modulation Doping in Atomically-thin Heterostructures
2D Material and van der Waal Heterostructure Nanoelectromechanical Systems (NEMS)
A Comparative Study of Tantalum Disulfide as Lithium-ion and Potassium-ion Batteries
Bulk Nanostructured Ceramics Research at the US Naval Research Lab
Controlling Grain Growth with Anisotropic Interfacial Energy and Heterogeneous Segregation
Controlling Synthesis of Nanostructures with Nanoscale Phase Diagrams
Design of Nanoparticles from Environmentally Benign Precursors
Effect of Doping Carbon Nanotubes with Group III-V Compounds Using Floating Catalyst Method
Effects of Layer Thickness and Constituent Material on the Wear and Corrosion Resistance of Nanostructured Multilayers
Growth Mechanism Study of Boron Carbide Nanowires
Low Temperature Synthesis of Metastable Tetragonal Yttria Doped Hafnia T-(Y-HfO2) Nanoparticles Through Mechanochemical Processing and Annealing
Mechanism Study of Controlled Growth of Transition Metal Oxide Nanostructures
Mechanisms of Hillock Formation and Nanostructural Self-assembly during Vapor-deposition of Phase-separating Alloy Films
Nanocrystalline Refractory Ceramic Synthesis Using High Char Polymers
Nanotube Consolidations and Metal-PTFE Nanocomposites for Conformable Thermal and Electrical Interfaces
NiO Nanostructure Growth at High Temperature in Water Vapor via In-situ ESEM
P1-31: Layered Metal Monochalcogenides as Electrodes for Electrochemical Energy Storage Applications
P1-32: Low Temperature Synthesis of Solvothermally Grown Ga2O3 Thin Films on FTO Substrates Enabling Various Functional Applications
Polymer-Derived Ceramic Nanocomposites for Applications at High Temperatures and in Harsh Environments
Polymer Derived Ceramics and Composites- From Nanoscale to Bulk Properties
Processing and Mechanical Properties of 3YSZ-Al2O3 Core-Shell Nanocomposite Ceramics
Self-Assembled Periodic Nanostructures of SrSnO3 Using Martensitic Phase Transformations
Single Acid One-pot Process as an Effective Method for Controlled Generation of Coal-derived Graphene Quantum Dots (GQDs)
Sintering, Structure, and Properties of Y2O3-ZrO2-Al2O3 Core-Shell Nanocomposite Ceramics
Supercrystalline Nanocomposites: Boosting and Controlling the Mechanical Behavior of These New Multifunctional Materials
Surface-engineered CeO2 Nanocrystals: Catalysis and Beyond
Surface Oxidation Behavior of FeNi-based Metal Amorphous Nanocomposite (MANC) for High Speed Motor Applications
Thickness-dependent Piezoelectric Property of Two-dimensional Zinc Oxide Nanosheets with Unit Cell Resolution
Ti3C2 MXene-polyvinyl Alcohol Hybrids for Photothermal Self-healing
Tungsten Ditelluride, A Semimetal Transition Metal Dichalcogenide as Active Material for Monovalent-ion Battery Electrodes
Universal Approach towards Metal Chalcogenide Materials from Molecular Building Blocks

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