Melissa Röhrig, Rafael Gitti Tortoretto Fim, Rubens Nunes de Faria, Cristiani Campos Plá Cid, Carlos Henrique Ahrens, Paulo Wendhausen
{"title":"片状粉末对Sm-Fe-N粘结磁体的激光粉末床聚变","authors":"Melissa Röhrig, Rafael Gitti Tortoretto Fim, Rubens Nunes de Faria, Cristiani Campos Plá Cid, Carlos Henrique Ahrens, Paulo Wendhausen","doi":"10.1089/3dp.2021.0228","DOIUrl":null,"url":null,"abstract":"<p><p>In this work, the role of the binder volumetric fraction used on the consolidation process of Sm-Fe-N-based bonded magnets obtained <i>via</i> the laser powder bed fusion technique has been investigated and explained. The magnetic samples have been obtained <i>via</i> the Selective Laser Sintering (SLS) process, using a mixture of polyamide-12 powder (PA12, DuraForm PA2200) and isotropic Sm-Fe-N melt-spun ribbons (Daido Electronics, Inc.) as feedstocks. The binder content has been varied between 34% and 65% vol. Geometrical density values increased systematically as the PA12 content was increased, reaching a maximum value of <i>ρ</i> = 3.35 g/cm<sup>3</sup> (60% vol.), which represents 89% of a fully dense composite. In this composition, the maximum magnetic properties values have been achieved, <i>J<sub>r</sub></i> = 369 mT and (BH)<sub>max</sub> = 24 kJ/m<sup>3</sup>. A further increase on the PA12 fraction up to 65% vol. resulted on magnetic samples with 97% relative density, but at the expense of magnetic performance. The formation of a continuous polymeric matrix has been observed <i>via</i> Scanning Electron Microscopy (SEM) analysis when PA12 fraction was on the interval between 60% and 65% vol., not observable for the other explored conditions. Volumetric binder fractions comparable with other published works, which used spherical particles as raw materials for feedstock production, showed inadequate consolidation and required adjustments for proper densification.</p>","PeriodicalId":54341,"journal":{"name":"3D Printing and Additive Manufacturing","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10880636/pdf/","citationCount":"0","resultStr":"{\"title\":\"Laser Powder Bed Fusion of Sm-Fe-N Bonded Magnets Employing Flake Powders.\",\"authors\":\"Melissa Röhrig, Rafael Gitti Tortoretto Fim, Rubens Nunes de Faria, Cristiani Campos Plá Cid, Carlos Henrique Ahrens, Paulo Wendhausen\",\"doi\":\"10.1089/3dp.2021.0228\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>In this work, the role of the binder volumetric fraction used on the consolidation process of Sm-Fe-N-based bonded magnets obtained <i>via</i> the laser powder bed fusion technique has been investigated and explained. The magnetic samples have been obtained <i>via</i> the Selective Laser Sintering (SLS) process, using a mixture of polyamide-12 powder (PA12, DuraForm PA2200) and isotropic Sm-Fe-N melt-spun ribbons (Daido Electronics, Inc.) as feedstocks. The binder content has been varied between 34% and 65% vol. Geometrical density values increased systematically as the PA12 content was increased, reaching a maximum value of <i>ρ</i> = 3.35 g/cm<sup>3</sup> (60% vol.), which represents 89% of a fully dense composite. In this composition, the maximum magnetic properties values have been achieved, <i>J<sub>r</sub></i> = 369 mT and (BH)<sub>max</sub> = 24 kJ/m<sup>3</sup>. A further increase on the PA12 fraction up to 65% vol. resulted on magnetic samples with 97% relative density, but at the expense of magnetic performance. The formation of a continuous polymeric matrix has been observed <i>via</i> Scanning Electron Microscopy (SEM) analysis when PA12 fraction was on the interval between 60% and 65% vol., not observable for the other explored conditions. Volumetric binder fractions comparable with other published works, which used spherical particles as raw materials for feedstock production, showed inadequate consolidation and required adjustments for proper densification.</p>\",\"PeriodicalId\":54341,\"journal\":{\"name\":\"3D Printing and Additive Manufacturing\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10880636/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"3D Printing and Additive Manufacturing\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1089/3dp.2021.0228\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/2/15 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"3D Printing and Additive Manufacturing","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1089/3dp.2021.0228","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/2/15 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
Laser Powder Bed Fusion of Sm-Fe-N Bonded Magnets Employing Flake Powders.
In this work, the role of the binder volumetric fraction used on the consolidation process of Sm-Fe-N-based bonded magnets obtained via the laser powder bed fusion technique has been investigated and explained. The magnetic samples have been obtained via the Selective Laser Sintering (SLS) process, using a mixture of polyamide-12 powder (PA12, DuraForm PA2200) and isotropic Sm-Fe-N melt-spun ribbons (Daido Electronics, Inc.) as feedstocks. The binder content has been varied between 34% and 65% vol. Geometrical density values increased systematically as the PA12 content was increased, reaching a maximum value of ρ = 3.35 g/cm3 (60% vol.), which represents 89% of a fully dense composite. In this composition, the maximum magnetic properties values have been achieved, Jr = 369 mT and (BH)max = 24 kJ/m3. A further increase on the PA12 fraction up to 65% vol. resulted on magnetic samples with 97% relative density, but at the expense of magnetic performance. The formation of a continuous polymeric matrix has been observed via Scanning Electron Microscopy (SEM) analysis when PA12 fraction was on the interval between 60% and 65% vol., not observable for the other explored conditions. Volumetric binder fractions comparable with other published works, which used spherical particles as raw materials for feedstock production, showed inadequate consolidation and required adjustments for proper densification.
期刊介绍:
3D Printing and Additive Manufacturing is a peer-reviewed journal that provides a forum for world-class research in additive manufacturing and related technologies. The Journal explores emerging challenges and opportunities ranging from new developments of processes and materials, to new simulation and design tools, and informative applications and case studies. Novel applications in new areas, such as medicine, education, bio-printing, food printing, art and architecture, are also encouraged.
The Journal addresses the important questions surrounding this powerful and growing field, including issues in policy and law, intellectual property, data standards, safety and liability, environmental impact, social, economic, and humanitarian implications, and emerging business models at the industrial and consumer scales.