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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advances in Magnetic Materials
Presentation Title Mechanochemical Synthesis of Magnetostrictive Materials: Ce-doped Galfenol and Alfenol
Author(s) Alexander Baker, Alfred Amon, Jibril Shittu, Hunter Henderson, Emily Moore, Scott McCall
On-Site Speaker (Planned) Alexander Baker
Abstract Scope Magnetostrictive materials such as FeGa (Galfenol) and FeAl (Alfenol) provide high precision solid-state sensing capabilities, with applications in magnetic field sensing, load cells, or tunable inductor circuits. The magnetostrictive effect can be enhanced through addition of rare earths such as Ce, but CeGa2 formation above ~0.01 at. % Ce limits these gains. Here we present a combination of nonequlibrium methods, mechanical alloying and laser powder bed fusion, that circumvent this limitation and allow greater design flexibility than bulk processing. We find that the mechanical alloying allows up to 0.5 at. % Ce addition without CeGa2 formation, resulting powders are amenable to pressing and sintering to near-full density, and usable as feedstock for additive manufacturing. A comprehensive study of doping and fabrication parameters will be presented, focusing on phase formation and its effects on magnetostriction, as well as opportunities presented by near-net shape fabrication. Prepared by LLNL under Contract DE-AC52-07NA2
Proceedings Inclusion? Planned:
Keywords Magnetic Materials, Other,

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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Crystallization Characteristics in Co-based Magnetic Amorphous Nanocomposites
Crystallization Kinetics and Magnetic Properties of Co-Fe2.3Mn2.3Nb4Si2B14 Nanocomposite Ribbon
D-15: Effects of Machining and Electroplating on Magnetic Properties of Small Sintered NdFeB Magnets
D-16: Investigating Irradiated Superconducting Magnet Insulation Materials for Particle Accelerators and Other High-dose Environments
D-17: Microstructural Processing and Phase Stabilization Analysis of Off-stoichiometric Fe-Mn-Ga Shape Memory Alloy
D-18: Order-disorder Transition and Antiferromagnetism in Cu-Mn-Al BCC Alloys
D-19: Polyurethane Based Composites for Magnetic Actuator Applications
D-20: The Effect of Stress-annealing on the Mechanical and Magnetic Properties in Fe-based Metal-amorphous Nanocomposites
Denitrogenation Process in ThMn12 Nitride by In Situ Neutron Powder Diffraction
Development of the Sintered (NdMM)-(FeCo)-B Based Magnets Substituted Nd by Less Critical Rare Earth (MM= La, Ce)
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Effect of Nitrogen Martensite Formation on Magnetostriction in Fe-Co Alloy
Effect of Thermodynamic and Sintering Atmosphere Parameters on Magnetic Properties of Mn-Zn Ferrites
Enhanced Powder-Processed Alnico Magnets by Novel Solid-State Engineering of the Microstructure and Nanostructure
Enhancing Stability and Magnetism of ThMn12-type Cerium-iron Intermetallics by Site Substitution
Fe-doping Influence on the Magnetostrictive Behaviour of Ni–Mn–Ga–Co–In–Fe Magnetic Shape Memory Alloys
Grain Boundary Engineering for High Performance Heavy Rare-Earth Free Permanent Magnets
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High-Temperature Stability of Induced Anisotropy and Permeability in Co-Rich Nanocrystalline Soft Magnetic Alloys
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Increased Energy Product of Nd2Fe14B-based Magnets Processed by Concurrent HDDR within Applied Magnetic Fields
Influence of Severe Plastic Deformation on the Magnetic Properties of SmCo Permanent Magnets
Investigations into the Processing and Magnetic Properties of Nd-Fe-B Magnets Produced by Extrusion
Low Magnetostrictive Materials Produced by Severe Plastic Deformation
Magnetoelastic Resonance Sensors: The Importance of Their Geometry on the Most Recent Applications
Magnetovolume Effects in Metamagnetic Shape Memory Heusler Compounds
Market Trends and Supply Chain Constraints for Soft Magnetic Materials
Mechanochemical Synthesis of Magnetostrictive Materials: Ce-doped Galfenol and Alfenol
Mixed Magnetic Phases in AlxCoCrNiFe High Entropy Alloy
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Rhombic Magnetoelastic Sensors with MOF Active Layers: A Potential Tool for Wireless VOCs Detection
Superparamagnetic Iron Oxide-based Bulk Nanocomposites
The Impact of Packaging on Soft Magnetic Core Performance
The Search in the Vast High-entropy Alloy Space for Competitive Magnetocaloric Properties
Toughening Sm-Co Sintered Magnets by Additive-modified Microstructure Engineering
Towards One-step Castable Cerium-based Gap Magnet
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Using Soft X-ray Photon Correlation Spectroscopy to Study Magnetic Helical Dynamics

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