Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content
Zr and Ti were co-doped into NdCeFeB sintered magnets to improve the magnetic and electrochemical anti-corrosion properties. Both performance are found closely associated with Ti content. At 0.15 wt%Ti, the sample shows higher coercivity without energy product loss compared to the Ti-free sample and...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424023901 |
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| author | Yuxuan Shao Junjie Ni Zhiwei Wang Xuegeng Wang Kai Xu Bo Song Yue Xu Shutai Zhou Tao Liu Laima Luo |
| author_facet | Yuxuan Shao Junjie Ni Zhiwei Wang Xuegeng Wang Kai Xu Bo Song Yue Xu Shutai Zhou Tao Liu Laima Luo |
| author_sort | Yuxuan Shao |
| collection | DOAJ |
| description | Zr and Ti were co-doped into NdCeFeB sintered magnets to improve the magnetic and electrochemical anti-corrosion properties. Both performance are found closely associated with Ti content. At 0.15 wt%Ti, the sample shows higher coercivity without energy product loss compared to the Ti-free sample and other Ti additions, due to the matrix-phases refinement and optimized distribution of RE-rich phases. For this sample, its corrosion current density and charge transfer resistance are 1.94 μA/cm2 and 1734 Ω•cm2 in NaCl solution respectively, which exhibits obviously improved corrosion resistance in comparison with the Ti-free magnet. The charge transfer resistance has been increased by 45.6 %. The apparently improved corrosion resistance is mainly attributed to the decreased amount of active reaction channels and the enhanced protective effect of TiO2, arising from the increment of Ti-rich precipitates. When the content of Ti dopant exceeds 0.5 wt%, the beneficial effects of Ti are overshadowed by the harmful effect of the density reduction on anti-corrosion performance, and the charge transfer resistance decreased with further increasing the dopant content. The new findings provide a theoretical basis for improving physicochemical properties of NdCeFeB magnet. |
| format | Article |
| id | doaj-art-30ac73a698e847e1890b1063b929b899 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-30ac73a698e847e1890b1063b929b8992024-12-26T08:54:41ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013340834091Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti contentYuxuan Shao0Junjie Ni1Zhiwei Wang2Xuegeng Wang3Kai Xu4Bo Song5Yue Xu6Shutai Zhou7Tao Liu8Laima Luo9School of Materials Science and Engineering, Liaocheng Key Laboratory of Wear Resistant Materials and Powder Metallurgy Technology, Liaocheng University, Liaocheng, 252000, ChinaSchool of Materials Science and Engineering, Liaocheng Key Laboratory of Wear Resistant Materials and Powder Metallurgy Technology, Liaocheng University, Liaocheng, 252000, China; Corresponding author.School of Materials Science and Engineering, Liaocheng Key Laboratory of Wear Resistant Materials and Powder Metallurgy Technology, Liaocheng University, Liaocheng, 252000, ChinaSchool of Materials Science and Engineering, Liaocheng Key Laboratory of Wear Resistant Materials and Powder Metallurgy Technology, Liaocheng University, Liaocheng, 252000, ChinaShandong Shangda Rare Earth Materials Co. Ltd, Guanxian, 252400, ChinaSchool of Materials Science and Engineering, Liaocheng Key Laboratory of Wear Resistant Materials and Powder Metallurgy Technology, Liaocheng University, Liaocheng, 252000, China; Corresponding author.Engineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, ChinaShandong Shangda Rare Earth Materials Co. Ltd, Guanxian, 252400, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing, 100081, ChinaEngineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China; Corresponding author.Zr and Ti were co-doped into NdCeFeB sintered magnets to improve the magnetic and electrochemical anti-corrosion properties. Both performance are found closely associated with Ti content. At 0.15 wt%Ti, the sample shows higher coercivity without energy product loss compared to the Ti-free sample and other Ti additions, due to the matrix-phases refinement and optimized distribution of RE-rich phases. For this sample, its corrosion current density and charge transfer resistance are 1.94 μA/cm2 and 1734 Ω•cm2 in NaCl solution respectively, which exhibits obviously improved corrosion resistance in comparison with the Ti-free magnet. The charge transfer resistance has been increased by 45.6 %. The apparently improved corrosion resistance is mainly attributed to the decreased amount of active reaction channels and the enhanced protective effect of TiO2, arising from the increment of Ti-rich precipitates. When the content of Ti dopant exceeds 0.5 wt%, the beneficial effects of Ti are overshadowed by the harmful effect of the density reduction on anti-corrosion performance, and the charge transfer resistance decreased with further increasing the dopant content. The new findings provide a theoretical basis for improving physicochemical properties of NdCeFeB magnet.http://www.sciencedirect.com/science/article/pii/S2238785424023901NdFeBMagnetic propertiesElectrochemical corrosionTi and Zr dopants |
| spellingShingle | Yuxuan Shao Junjie Ni Zhiwei Wang Xuegeng Wang Kai Xu Bo Song Yue Xu Shutai Zhou Tao Liu Laima Luo Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content Journal of Materials Research and Technology NdFeB Magnetic properties Electrochemical corrosion Ti and Zr dopants |
| title | Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content |
| title_full | Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content |
| title_fullStr | Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content |
| title_full_unstemmed | Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content |
| title_short | Relations of magnetic and electrochemical anti-corrosion properties of (Zr, Ti)-doped NdCeFeB magnets with Ti content |
| title_sort | relations of magnetic and electrochemical anti corrosion properties of zr ti doped ndcefeb magnets with ti content |
| topic | NdFeB Magnetic properties Electrochemical corrosion Ti and Zr dopants |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424023901 |
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