1-xCex)2.4Fe14B (x=0, 0.2, 0.4, 0.6, 0.8, 0.8, 1.0)的快淬帶，研究了Ce取代量對快淬帶的相組成、磁性能和微觀結(jié)構(gòu)的影響。XRD結(jié)果表明，所有快淬帶均呈現(xiàn)四方結(jié)構(gòu)(Nd, Ce)2Fe14B相，當(dāng)Ce取代量超過x=0.6時，快淬帶中出現(xiàn)CeFe2相并且CeFe2含量隨著Ce取代量的增加而增加。快淬帶的剩磁、剩磁比（Mr/Ms）和晶格常數(shù)隨著Ce含量的增加而減小，當(dāng)Ce取代量為x=0.2時，快淬帶的磁性能為矯頑力1.31×106 A/m，最大磁能積103 kJ/m3。通過小回線和δM曲線研究了快淬帶的矯頑力機理和晶粒間交換耦合，在每個樣品中都觀察到正的δM值，證實了交換耦合相互作用的存在。Ce含量為x=0.2時δM最大值達到0.76，說明快淬帶晶粒間交換耦合效應(yīng)最強，這一結(jié)果與剩磁比的變化一致。SEM觀察發(fā)現(xiàn)，Ce取代量的增加惡化快淬帶的柱狀晶結(jié)構(gòu)。"/>

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NdCeFeB快淬帶相互作用與磁性能
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作者單位:

1.內(nèi)蒙古科技大學(xué) 理學(xué)院，內(nèi)蒙古 包頭 014010;2.內(nèi)蒙古科技大學(xué) 分析測試中心，內(nèi)蒙古 包頭 014010

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基金項目:

National Key Research and Development Program of China (2022YFB3505800)；NSFC(51761031、51961031); Natural Science Foundation of Inner Mongolia Autonomous Region (Grant No. 2019MS05040)


Interaction and Magnetic Properties of NdCeFeB Melt-Spun Ribbons
Author:
Affiliation:

1.School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China;2.Instrumental Analysis Center, Inner Mongolia University of Science and Technology, Baotou 014010, China

Fund Project:

National Key Research and Development Program of China (2022YFB3505800); National Natural Science Foundation of China (51761031, 51961031); Natural Science Foundation of Inner Mongolia Autonomous Region (2019MS05040)

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    摘要:

    采用感應(yīng)熔煉制備名義成分為(Nd1-xCex)2.4Fe14B (x=0, 0.2, 0.4, 0.6, 0.8, 0.8, 1.0)的快淬帶，研究了Ce取代量對快淬帶的相組成、磁性能和微觀結(jié)構(gòu)的影響。XRD結(jié)果表明，所有快淬帶均呈現(xiàn)四方結(jié)構(gòu)(Nd, Ce)2Fe14B相，當(dāng)Ce取代量超過x=0.6時，快淬帶中出現(xiàn)CeFe2相并且CeFe2含量隨著Ce取代量的增加而增加?？齑銕У氖４?、剩磁比（Mr/Ms）和晶格常數(shù)隨著Ce含量的增加而減小，當(dāng)Ce取代量為x=0.2時，快淬帶的磁性能為矯頑力1.31×106 A/m，最大磁能積103 kJ/m3。通過小回線和δM曲線研究了快淬帶的矯頑力機理和晶粒間交換耦合，在每個樣品中都觀察到正的δM值，證實了交換耦合相互作用的存在。Ce含量為x=0.2時δM最大值達到0.76，說明快淬帶晶粒間交換耦合效應(yīng)最強，這一結(jié)果與剩磁比的變化一致。SEM觀察發(fā)現(xiàn)，Ce取代量的增加惡化快淬帶的柱狀晶結(jié)構(gòu)。

    Abstract:

    The alloy ingots with nominal compositions of (Nd1-xCex)2.4Fe14B (x=0, 0.2, 0.4, 0.6, 0.8, 1.0) were prepared by induction melting and then melt-spun to form nanocrystalline ribbons. Phase composition, magnetic properties and microstructure were investigated. XRD results show that all melt-spun ribbons exhibit the tetragonal structure (Nd,Ce)2Fe14B phase. When Ce substitution content is more than x=0.6, CeFe2 phase appears and CeFe2 content increases with the increase in Ce substitution content. Remanence, remanence ratio (Mr/Ms) and lattice constant decrease while increasing Ce substitution content. A coercivity of 1.31×106 A/m and the maximum energy product of 103 kJ/m3 for (Nd0.8Ce0.2)2.4Fe14B melt-spun ribbon are achieved. The coercivity mechanism and intergrain exchange coupling were studied. The positive δM value was observed in every sample, confirming the existence of exchange coupling interaction. The δM maximum value reaches 0.76 at the Ce substitution content x=0.2, indicating that the intergranular exchange coupling effect is the strongest, which is consistent with the varying remanence ratio. SEM observation reveals that increasing Ce substitution deteriorates the columnar crystal structure of ribbons.

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李敏敏,左建華,侯永杰,薄宇,章明,董福海,李志,劉飛,劉艷麗,白鎖,李柱柏,李永峰.NdCeFeB快淬帶相互作用與磁性能[J].稀有金屬材料與工程,2023,52(8):2732~2736.[Li Minmin, Zuo Jianhua, Hou Yongjie, Bo Yu, Zhang Ming, Dong Fuhai, Li Zhi, Liu Fei, Liu Yanli, Bai Suo, Li Zhubai, Li Yongfeng. Interaction and Magnetic Properties of NdCeFeB Melt-Spun Ribbons[J]. Rare Metal Materials and Engineering,2023,52(8):2732~2736.]
DOI：10.12442/j. issn.1002-185X.20230081

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  • 收稿日期:2023-02-19
  • 最后修改日期:2023-04-19
  • 錄用日期:2023-04-26
  • 在線發(fā)布日期: 2023-08-25
  • 出版日期: 2023-08-24