Effect of Hydrogen Decrepitation Temperature and Milling on Crystal Structure and Particle Size of End-of-Life NdFeB Magnets

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dc.authorid0009-0007-0738-2370
dc.contributor.authorSaritas, Senem
dc.contributor.authorHabibzadeh, Alireza
dc.contributor.authorARIK, Muhammet Nasuh
dc.contributor.authorGÖKELMA, Mertol
dc.contributor.authorÇakır, Öznur
dc.date.accessioned2025-01-15T10:52:48Z
dc.date.available2025-01-15T10:52:48Z
dc.date.issued2024-08-16
dc.departmentTENMAK-Nadir Toprak Elementleri Araştırma Enstitüsü
dc.description.abstractRecycling NdFeB magnets from secondary sources is a vital strategy for addressing the supply risks associated with critical raw materials such as Neodymium (Nd) and Dysprosium (Dy). Among various recycling methods, Hydrogen Decrepitation (HD) is recognized as an efficient process for recovering the end-of-life (EoL) magnets. This study aims to examine the impact of different HD temperatures on the crystal structure and particle size of milled HDNdFeB. End-of-Life (EoL) NdFeB magnets were subjected to HD process at ambient pressures and varying temperatures between 30°C to 200°C. It was observed that increasing the HD temperature up to 50°C exhibits a shift to lower 2θ angles in XRD crystal patterns while further increasing the HD temperature resulted in reversed behavior. The optimum HD process, according to the XRD results, showed 92.7% Nd₂Fe₁₄BH (Neodymium Iron Boride Hydride) along with some oxide phases. It was revealed that following milling of the optimum HD powders, the crystallite size decreased from 12.512 Å to 302 Å and this reduction is accompanied by a dramatic shift to higher angles. Overall, the milling resulted in a particle size distribution of 10µm (Dv50)
dc.identifier.urihttps://kurumsalarsiv.tenmak.gov.tr/handle/20.500.12878/2063
dc.institutionauthorSaritas, Senem
dc.institutionauthorÇakır, Öznur
dc.language.isoen
dc.publisherTürkiye Enerji, Nükleer ve Maden Araştırma Kurumu (TENMAK)
dc.relation.publicationcategoryDiğer
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleEffect of Hydrogen Decrepitation Temperature and Milling on Crystal Structure and Particle Size of End-of-Life NdFeB Magnets
dc.typepresentation
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