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
Nd-Fe-B基納米復合永磁材料矯頑力及其機制的研究進展
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家基礎研究前期專項(2004CCA04000)；國家自然科學基金(50744014)；浙江省科技廳項目（2008C11086-1和2008C21046）；浙江省自然科學基金(Y406389)；寧波市科技局項目(2006B100054)；新型功能材料及其制備科學國家重點實驗室培育基地開放基金；寧波大學王寬誠幸福基金


Research Progress of Coercivity and Coercivity Mechanism of Nd-Fe-B Based Nanocomposite Permanent Magnets
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    重點探討Nd-Fe-B基納米復合永磁材料晶間交換耦合作用對有效各向異性和矯頑力的影響，對Nd-Fe-B基納米復合永磁材料矯頑力機制進行討論分析。硬磁相之間的耦合在反磁化場作用下將促進疇壁位移和磁距反轉，不利于提高納米復合永磁材料的矯頑力，在晶間形成適當的非磁性相減弱硬磁相之間的耦合作用可一定程度地提高納米復合永磁材料矯頑力。除形核場、自釘扎作用外，晶粒內部缺陷的釘扎效應能阻止反磁化疇壁的位移，可進一步提高納米復合永磁材料矯頑力

    Abstract:

    The effects of the exchange-coupling between nano-grains on effective anisotropy and coercivity of Nd-Fe-B based nanocomposite permanent magnets were discussed, and the coercivity mechanism of the magnets was also analyzed. The exchange-coupling between hard grains promotes the movement of domain walls and the reversal of magnetic moment at the applied field, which decreases the coercivity of nanocomposite magnets. Therefore, nonmagnetic grain boundary phases with suitable thickness can weaken the exchange-coupling between nano-grains of hard magnetic phase to improve the coercivity of nanocomposite permanent magnets. Besides the nucleation field and self-pining, the pining effect of nonmagnetic precipitates distributed in grains may impede the movement of the domain walls to further increase the coercivity of nanocomposite magnets.

    參考文獻
    相似文獻
    引證文獻
引用本文

李柱柏,劉新才,潘 晶,張 輝,張文旺. Nd-Fe-B基納米復合永磁材料矯頑力及其機制的研究進展[J].稀有金屬材料與工程,2010,39(10):1868~1874.[Li Zhubai, Liu Xincai, Pan Jing, Zhang Hui, Zhang Wenwang. Research Progress of Coercivity and Coercivity Mechanism of Nd-Fe-B Based Nanocomposite Permanent Magnets[J]. Rare Metal Materials and Engineering,2010,39(10):1868~1874.]
DOI：[doi]

復制
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2009-10-28
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: