| Title: | Corrosion of sintered NdFeB permanent magnets |
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| Authors: | ID Poženel Kovačič, Terezija, Institut "Jožef Stefan" (Author)
ID Kovačević, Nataša (Author)
ID Milošev, Ingrid, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://iopscience.iop.org/article/10.1149/1945-7111/ade509
 PDF - Presentation file, download (3,22 MB)
MD5: E553330B5AB56E798FA9A5A6CA217816
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| Language: | English |
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| Typology: | 1.02 - Review Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | The green transition to reduce reliance on fossil fuel energy sources and minimise global warming is accelerating the need for NdFeB permanent magnet materials. Sintered NdFeB magnets cover the largest segment percentage within the permanent magnet type group, with a share of over 50%. The microstructure of NdFeB magnets includes grains of the Nd1+εFe4B4 (B-rich phase), which form grain boundaries with both the Nd-rich (Nd4Fe) and matrix (Nd2Fe14B) phases. NdFeB magnets are prone to degradation in harsh environments due to the low corrosion resistance of both iron and neodymium. Consequently, magnets require corrosion protection because their magnetic properties would be jeopardised due to the degradation caused by the corrosion process. Understanding magnets’ electrochemical and corrosion properties is crucial for developing their corrosion protection and thus prolonging their smooth operation in numerous industrial applications. This review aims to present the fundamental corrosion processes on sintered NdFeB magnets, provide an overview of the contemporary magnet production processes of NdFeB magnets and their impact on the corrosion resistance, and summarise the corrosion protection of NdFeB magnets. Prospects are presented, especially regarding the use of magnets in the transportation (hybrid and electric vehicles) industry and the development of alternative types of coatings. |
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| Keywords: | sintered magnets, green transition |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 24.01.2025 |
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| Publication date: | 02.07.2025 |
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| Publisher: | IOP Publishing |
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| Year of publishing: | 2025 |
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| Number of pages: | str. [1-20] |
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| Numbering: | Vol. 172, no. 7, [article no.] 071501 |
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| Source: | Združeno kraljestvo |
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| PID: | 20.500.12556/DiRROS-22849  |
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| UDC: | 546 |
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| ISSN on article: | 1945-7111 |
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| DOI: | 10.1149/1945-7111/ade509 |
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| COBISS.SI-ID: | 241210627 |
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| Copyright: | © 2025 The Author(s). |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 3. 7. 2025;
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| Publication date in DiRROS: | 03.07.2025 |
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| Views: | 513 |
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| Downloads: | 235 |
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