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| Magnetic Microstructures and Corrosion Behaviors of Nd-Fe-B-Ti-C Alloy by Ga Doping |
| Journal of Magnetics, Volume 18, Number 3, 30 Sep 2013, Pages 240-244 |
Qiong Wu (China Jiliang University, Magnetism Key Laboratory of Zhejiang Province), Pengyue Zhang *  (China Jiliang University, Magnetism Key Laboratory of Zhejiang Province), Hongliang Ge (China Jiliang University, Magnetism Key Laboratory of Zhejiang Province), Aru Yan (Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences), Dongyun Li (China Jiliang University, Magnetism Key Laboratory of Zhejiang Province) |
| Abstract |
The influences of Gallium doping on the magnetic microstructures and corrosion behaviors of Nd-Fe-B-Ti-C alloys are investigated. The cooling rate for obtaining fully amorphous structure is raised, and the glassforming ability is improved by the Ga addition. The High Resolution Transmission Electron Microscopy image shows that the α-Fe and Fe3B soft magnetic phases become granular surrounded by the Nd2Fe14B hard magnetic phase. The rms and (Δϕ)rms value of Nd-Fe-B-Ti-C nanocomposite alloy thick ribbons in the typical topographic and magnetic force images detected by Magnetic Force Microscopy(MFM) decreases with 0.5 at% Ga addition. The corrosion resistances of Nd9Fe73B12.6C1.4Ti4-xGax (x = 0, 0.5, 1) alloys are enhanced by the Ga addition. It can be attributed to the formation of more amorphous phases in the Ga doped samples.
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| Keywords: nanocomposite rare-earth magnets; microstructures; corrosion behaviors |
| DOI: http://dx.doi.org/10.4283/JMAG.2013.18.3.240 |
| Full Text: PDF |
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