1. A 3D-Printable Polymer-Metal Soft-Magnetic Functional Composite—Development and Characterization.
- Author
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Khatri, Bilal, Lappe, Karl, Noetzel, Dorit, Pursche, Kilian, and Hanemann, Thomas
- Subjects
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COPOLYMERS , *SOFT magnetic materials , *ACRYLONITRILE butadiene styrene resins , *TENSILE tests , *FLEXURAL strength , *ELASTICITY , *MAGNETIC fields , *MAGNETIC sensors - Abstract
In this work, a 3D printed polymer–metal soft-magnetic composite was developed and characterized for its material, structural, and functional properties. The material comprises acrylonitrile butadiene styrene (ABS) as the polymer matrix, with up to 40 vol. % stainless steel micropowder as the filler. The composites were rheologically analyzed and 3D printed into tensile and flexural test specimens using a commercial desktop 3D printer. Mechanical characterization revealed a linearly decreasing trend of the ultimate tensile strength (UTS) and a sharp decrease in Young’s modulus with increasing filler content. Four-point bending analysis showed a decrease of up to 70% in the flexural strength of the composite and up to a two-factor increase in the secant modulus of elasticity. Magnetic hysteresis characterization revealed retentivities of up to 15.6mT and coercive forces of up to 4.31 kA/m at an applied magnetic field of 485 kA/m. The composite shows promise as a material for the additive manufacturing of passive magnetic sensors and/or actuators. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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