About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Magnetic Materials for Energy and Power Conversion Applications
|
Presentation Title |
Understanding the Role of Particle Size in the Development of Flexible Permanent Magnet-polymer Filaments |
Author(s) |
Ester M. Palmero, Daniel Casaleiz, Javier Rial, Javier de Vicente, Alberto Bollero |
On-Site Speaker (Planned) |
Ester M. Palmero |
Abstract Scope |
Advanced 3D-printing attracts much interest for fabricating high-performance and complex permanent magnets (PMs). The challenge is developing magnets with a high filling factor (FF), while avoiding the deterioration of their magnetic properties.
Composites (PM particles/polymer) based on NdFeB, hybrid (NdFeB/Sr-ferrite) powders (mean particle size: 5-50 μm) and τ-MnAlC (industrial collaboration with Höganäs AB, Sweden) were analyzed. The different composites (FF>85%) allowed for obtaining filaments (length over 10 m) with coercivity ranging between 1.5-10 kOe [1,2]. Particle size was crucial for extruding flexible filaments, with fine particles (< 20 μm) based composites leading to filaments with maintained FF and coercivity [2]. Extrusion effectiveness and FF were enhanced by optimizing the fine-to-coarse particles ratio [1], showing that composites can be efficiently synthesized for developing PM filaments for 3D-printing.
[1] Palmero et al., Sci. Technol. Adv. Mater. 19, 465 (2018); Submitted (2019).
[2] Palmero et al., IEEE Trans. Magn. 55, 2101004 (2019). |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |