Additive Manufacturing of Isotropic NdFeB PPS Bonded Permanent Magnets
| Autor: | Benjamin A. Begley, Ikenna C. Nlebedim, Volkan Yildirim, Brian C. Sales, Ahmed Arabi Hassen, Kinjal Gandha, Brian K. Post, M. Parans Paranthaman, Tej N. Lamichhane |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Sulfide 02 engineering and technology lcsh:Technology 01 natural sciences Article thermal stability Corrosion 0103 physical sciences Ultimate tensile strength General Materials Science Thermal stability Composite material lcsh:Microscopy lcsh:QC120-168.85 010302 applied physics chemistry.chemical_classification lcsh:QH201-278.5 lcsh:T NdFeB PPS bonded permanent magnets additive manufacturing tensile strength magnetic properties 021001 nanoscience & nanotechnology Neodymium magnet chemistry lcsh:TA1-2040 Magnet Volume fraction lcsh:Descriptive and experimental mechanics Extrusion lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 |
| Zdroj: | Materials Materials; Volume 13; Issue 15; Pages: 3319 Materials, Vol 13, Iss 3319, p 3319 (2020) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13153319 |
| Popis: | Extrusion based additive manufacturing of polymer composite magnets can increase the solid loading volume fraction with greater mechanical force through the printing nozzle as compared to traditional injection molding process. About 63 vol% of isotropic NdFeB magnet powders were compounded with 37 vol% of polyphenylene sulfide and bonded permanent magnets were fabricated while using Big Area Additive Manufacturing without any degradation in magnetic properties. The polyphenylene sulfide bonded magnets have a tensile stress of 20 MPa, almost double than that of nylon bonded permanent magnets. Additively manufactured and surface-protective-resin coated bonded magnets meet the industrial stability criterion of up to 175 °C with a flux-loss of 2.35% over 1000 h. They also exhibit better corrosion resistance behavior when exposed to acidic (pH = 1.35) solution for 24 h and also annealed at 80 °C over 100 h (at 95% relative humidity) over without coated magnets. Thus, polyphenylene sulfide bonded, additively manufactured, protective resin coated bonded permanent magnets provide better thermal, mechanical, and magnetic properties. |
| Databáze: | OpenAIRE |
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