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- W3048593896 abstract "采用涂敷方式，在烧结钕铁硼表面均匀涂敷TbH2粉末，经过不同的扩散温度处理，制备出晶界扩散磁体。研究了晶界扩散TbH2对烧结Nd-Fe-B磁体常温磁性能及高温稳定性的影响，并分析了磁体矫顽力提升的机理。常温磁性能研究表明，扩散磁体经过890 ℃+490 ℃工艺处理后性能达到最优，矫顽力从1 383 kA/m提升到1 988 kA/m。高温磁性能结果显示，扩散磁体200 ℃的矫顽力温度系数|β|比原始磁体降低0.032%/℃，磁通不可损失hirr比原始磁体降低21.47%，扩散TbH2明显提高了烧结Nd-Fe-B磁体的热稳定性。分析得出，晶界扩散TbH2磁体矫顽力提升的机理是Nd2Fe14B晶粒外延层形成了（Tb, Nd）2Fe14B核壳结构，提高了磁晶各向异性场；同时改善了磁体的微观组织结构，有效地隔绝了晶粒之间的磁交换耦合作用。" @default.
- W3048593896 created "2020-08-18" @default.
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- W3048593896 date "2020-06-25" @default.
- W3048593896 modified "2023-09-23" @default.
- W3048593896 title "烧结Nd-Fe-B磁体晶界扩散TbH 2 高温稳定性及其机理" @default.
- W3048593896 doi "https://doi.org/10.13264/j.cnki.ysjskx.2020.03.015" @default.
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