A 3D-Printable Polymer-Metal Soft-Magnetic Functional Composite—Development and Characterization

Materials

Dorit Noetzel¹  Kilian Pursche¹  Thomas Hanemann²  Bilal Khatri²  Karl Lappe² 

[1] Karlsruhe Institute of Technology, Institute of Applied Materials, 76344 Karlsruhe, Germany;Laboratory for Materials Processing, University of Freiburg, 79110 Freiburg, Germany;

关键词: polymer–metal composite;    3D printing;    fused deposition modeling;    material characterization;    mechanical characterization;    magnetic characterization;   

DOI  :  10.3390/ma11020189

来源: DOAJ

【 摘 要 】

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 15.6 mT 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.

【 授权许可】

Unknown