About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Magnetic Materials for Energy and Power Conversion Applications
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Presentation Title |
Have it Your Way: Manufacturing of Permanent Magnets by Laser Powder-bed Fusion, Cold Spray, Extrusion |
Author(s) |
Alexander Baker, Matt Worthington, Sarah Baker, Christine Orme, Scott McCall |
On-Site Speaker (Planned) |
Alexander Baker |
Abstract Scope |
Many Additive manufacturing approaches for permanent magnets have been developed, driven by the promise of low-loss net-shape fabrication. Direct-ink write approaches have used anisotropic particles to bring energy products into the 15 MGOe range. However, challenges such as achieving full density, good fracture toughness or high coercivity remain, due to the complex microstructural engineering required.
Here, we will survey recent successes in a variety of AM processes. Extrusion of ink-bound oxide particles enables highly coercive SmCo ( >60 kOe). Laser AM achieves close to full density and a high saturation magnetization. Cold-spray operates below the melting point of the materials to preserve microstructure. Matching the strengths of each approach to the usage is crucial for applications. We will discuss magnetometry, microscopy and structural characterization of the samples throughout the fabrication process, as well as other opportunities enabled by AM techniques.
Prepared by LLNL under Contract DE-AC52-07NA27344. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |