About this Abstract |
| Meeting |
2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Symposium
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2026 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2026)
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| Presentation Title |
Extrusion-Based Additive Manufacturing of Strontium Ferrite–Polyamide 12 Bonded Magnets via Controlled Particle Size Distribution |
| Author(s) |
SHOURAV GHOSH, Pratik Uday Karkhanis, Jitendra S. Tate |
| On-Site Speaker (Planned) |
SHOURAV GHOSH |
| Abstract Scope |
Extrusion-based additive manufacturing offers unique opportunities to fabricate net-shaped polymer-bonded magnets with tailored geometries. However, magnetic output remains constrained by inefficient particle packing and limited magnetic volume fraction. In this study, a strontium ferrite–polyamide 12 (PA12) composite was developed using a broadened particle size distribution to improve packing density and enhance magnetic response. Anisotropic strontium ferrite powder (~1 μm) was subjected to wet ball-milling to generate a finer fraction, and the two powders were blended in controlled ratios to promote efficient void filling within the PA12 matrix. The composite was compounded into filament via single-screw extrusion and fabricated using Fused Filament Fabrication (FFF). Mechanical properties were evaluated through tensile and flexural testing, magnetic properties via VSM, and microstructural analysis were performed using Axia Chemi SEM. Results demonstrate that controlled particle size distribution broadening is an effective strategy for enhancing magnetic performance while preserving processability in extrusion based bonded magnets. |
| Proceedings Inclusion? |
Undecided |