NDLI: Development of permanent magnet MnAlC/polymer composites and flexible filament for bonding and 3D-printing technologies

Content Provider	Taylor & Francis Online
Author	Camarero, Julio Palmero, Ester M. Bollero, Alberto Rial, Javier Skårman, Björn Vidarsson, Hilmar Larsson, Per-Olof Vicente, Javier De
Abstract	Searching for high-performance permanent magnets components with no limitation in shape and dimensions is highly desired to overcome the present design and manufacturing restrictions, which affect the efficiency of the final devices in energy, automotive and aerospace sectors. Advanced 3D-printing of composite materials and related technologies is an incipient route to achieve functional structures avoiding the limitations of traditional manufacturing. Gas-atomized MnAlC particles combined with polymer have been used in this work for fabricating scalable rare earth-free permanent magnet composites and extruded flexible filaments with continuous length exceeding 10 m. Solution casting has been used to synthesize homogeneous composites with tuned particles content, made of a polyethylene (PE) matrix embedding quasi-spherical particles of the ferromagnetic τ-MnAlC phase. A maximum filling factor of 86.5 and 72.3% has been obtained for the composite and the filament after extrusion, respectively. The magnetic measurements reveal no deterioration of the properties of the MnAlC particles after the composite synthesis and filament extrusion. The produced MnAlC/PE materials will serve as precursors for an efficient and scalable design and fabrication of end-products by different processing techniques (polymerized cold-compacted magnets and 3D-printing, respectively) in view of technological applications (from micro electromechanical systems to energy and transport applications).
Starting Page	465
Ending Page	473
Page Count	9
File Format	PDF HTM / HTML
ISSN	14686996 18785514
DOI	10.1080/14686996.2018.1471321
Journal	Science and Technology of Advanced Materials
Volume Number	19
Issue Number	1
Language	English
Publisher	Taylor & Francis
Publisher Date	2018-05-30
Access Restriction	Open
Subject Keyword	Permanent magnet composite Solution casting Polymer MnAl Filament extrusion 3D-printing 50 Energy Materials 103 Composites 300 Processing / Synthesis and Recycling 203 Magnetics / Spintronics / Superconductors
Content Type	Text
Resource Type	Article
Subject	Materials Science

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