63.3Fe36.7合金制備NdFeB再生磁體。在未添加Ho63.3Fe36.7的磁體中，沒有足夠的富Nd相隔離Nd2Fe14B相，從而導(dǎo)致磁體性能較差；隨著Ho63.3Fe36.7合金的加入，晶界相變得清晰且連續(xù)。在質(zhì)量分?jǐn)?shù)2%Ho63.3Fe36.7添加量下，釹鐵硼再生磁體獲得最佳磁性能[(BH)max+Hcj=1756.07]。此時矯頑力增加123 kA/m（約提高9.1%），磁體的最大能積由290.94 kJ/m3下降到281.07 kJ/m3，而剩磁少量下降。通過對再生磁體顯微組織和成分的分析可知，磁體晶界處形成了(Nd, Pr, Ho)2Fe14B殼層，這能夠提高磁體的矯頑力。而X射線衍射分析表明，磁體I(006)/I(105)的衍射峰強(qiáng)度比從0.92提高到1.32。這說明磁體取向度提高，可以減弱對剩磁的影響，從而使得再生磁體在保持剩磁的同時提高磁體的矯頑力。"/>

最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
晶界添加Ho63.3Fe36.7 對NdFeB再生磁體組織與性能的影響
作者:
作者單位:

1.桂林電子科技大學(xué) 材料科學(xué)與工程學(xué)院 廣西信息材料重點(diǎn)實(shí)驗(yàn)室，廣西 桂林 541004;2.中國稀土(廣西)金源新材料有限公司，廣西 賀州 542603

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

the National Key R&D Program of China (Grant No. 2016YFB0700901), the Natrual Science Foundation of China (Grant No. 51761007)，the science and technology project of Guangxi (Grant Nos. 2017AD23031), Science and technology plan project of Fujian (No. 18I11010069)


Effect of Adding Ho63.3Fe36.7 to Grain Boundaries on Structure and Properties of Regenerated NdFeB Magnets
Author:
Affiliation:

1.Guangxi Key Laboratory of Information Materials, School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China;2.China Rare Metals and Rare Earth (Guangxi) Jinyuan New Materials Co., Ltd, Hezhou 542603, China

Fund Project:

National Key R&D Program of China (2016YFB0700901); National Natural Science Foundation of China (51761007); Science and Technology Project of Guangxi (2017AD23031); Science and Technology Plan Project of Fujian (18I11010069)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    采用一種高效、綠色的物理方法對NdFeB廢舊磁體表面進(jìn)行清理并回收利用。通過晶界添加低熔點(diǎn)Ho63.3Fe36.7合金制備NdFeB再生磁體。在未添加Ho63.3Fe36.7的磁體中，沒有足夠的富Nd相隔離Nd2Fe14B相，從而導(dǎo)致磁體性能較差；隨著Ho63.3Fe36.7合金的加入，晶界相變得清晰且連續(xù)。在質(zhì)量分?jǐn)?shù)2%Ho63.3Fe36.7添加量下，釹鐵硼再生磁體獲得最佳磁性能[(BH)max+Hcj=1756.07]。此時矯頑力增加123 kA/m（約提高9.1%），磁體的最大能積由290.94 kJ/m3下降到281.07 kJ/m3，而剩磁少量下降。通過對再生磁體顯微組織和成分的分析可知，磁體晶界處形成了(Nd, Pr, Ho)2Fe14B殼層，這能夠提高磁體的矯頑力。而X射線衍射分析表明，磁體I(006)/I(105)的衍射峰強(qiáng)度比從0.92提高到1.32。這說明磁體取向度提高，可以減弱對剩磁的影響，從而使得再生磁體在保持剩磁的同時提高磁體的矯頑力。

    Abstract:

    A high-efficiency and green physical method was proposed to clean the surface of NdFeB waste magnets for recycling. NdFeB regenerated magnets were fabricated by adding low-melting point Ho63.3Fe36.7 alloy to grain boundaries. Results show that in magnets without Ho63.3Fe36.7, there are insufficient Nd-rich phases to isolate the Nd2Fe14B phase, leading to poor magnet performance. With the addition of Ho63.3Fe36.7 alloy, the grain boundary phases become clear and concatenated. Optimal magnetic energy [(BH) max+Hcj=1756.07] can be obtained by adding 2wt% Ho63.3Fe36.7 to the magnet. Further, the coercivity increases by 123 kA/m (approximately 9.1%), the maximum magnetic energy product decreases from 290.94 kJ/m3 to 281.07 kJ/m3, and remanence decreases slightly. Through analysis of the microstructure and composition, it can be seen that the (Nd, Pr, Ho)2Fe14B shell layers form at the grain boundary, which enhances the coercivity of the magnet. X-ray diffraction analysis suggests that the diffraction peak intensity ratio of magnet I(006)/I(105) increases from 0.92 to 1.32, which indicates that the alignment degree is improved and the influence on remanence is weakened. Therefore, regenerated magnets can possess improved coercivity while maintaining magnetic remanence.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

孫前程,姚青榮,龍乾新,黃偉超,鄧健秋,王江,饒光輝,周懷營.晶界添加Ho63.3Fe36.7 對NdFeB再生磁體組織與性能的影響[J].稀有金屬材料與工程,2021,50(12):4230~4235.[Sun Qiancheng, Yao Qingrong, Long Qianxin, Huang Weichao, Deng Jianqiu, Wang Jiang, Rao Guanghui, Zhou Huaiying. Effect of Adding Ho63.3Fe36.7 to Grain Boundaries on Structure and Properties of Regenerated NdFeB Magnets[J]. Rare Metal Materials and Engineering,2021,50(12):4230~4235.]
DOI：10.12442/j. issn.1002-185X.20200697

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2020-09-12
  • 最后修改日期:2021-11-24
  • 錄用日期:2020-11-05
  • 在線發(fā)布日期: 2021-12-30
  • 出版日期: 2021-12-24