1-xMMx]30.3(Fe,Co)balM0.73B0.98 （x=0.3，0.5和0.7，質(zhì)量分?jǐn)?shù)）的磁體，對比研究其磁性能和抗腐蝕性。研究發(fā)現(xiàn)：雙主相工藝制備的磁體相比單主相工藝制備的同成分磁體展現(xiàn)了優(yōu)越的磁性能和抗腐蝕性。當(dāng)x=0.5，雙主相磁體的磁性能為Br=1.308 T，Hcj=799.98 kA/m和(BH)max=325.6436 kJ/m3，遠(yuǎn)高于同成分的單主相磁體的性能（Br=1.297 T，Hcj=746.8868 kA/m 和(BH)max=317.8428 kJ/m3）。這種改進(jìn)源于富稀土相分布的改進(jìn)以及主相晶粒間和晶粒內(nèi)部耦合作用的增強(qiáng)。當(dāng)雙主相磁體暴露在濕熱環(huán)境下時，磁體中不僅存在富稀土相腐蝕，也存在主相晶粒的腐蝕成粉現(xiàn)象，這主要是由于富稀土相與水蒸氣和氧氣反應(yīng)時產(chǎn)生氫氣，導(dǎo)致主相晶粒被氫化，由于主相晶粒間和晶粒內(nèi)部的鑭鈰分布差異，產(chǎn)生大的應(yīng)力，導(dǎo)致其表現(xiàn)出區(qū)別于單主相磁體的腐蝕行為。"/>

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
雙主相混合稀土基RE-Fe-B磁體的磁性能和抗腐蝕性改進(jìn)
作者:
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) 材料與冶金學(xué)院，內(nèi)蒙古 包頭 014010;3.中科院贛江創(chuàng)新研究院，江西 贛州 341000

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:


Enhancement of Magnetic Properties and Corrosion Resistance for Misch Metal Based RE-Fe-B Magnets Prepared by Double Main Phase Process
Author:
Affiliation:

1.School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China;2.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;3.Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China

Fund Project:

National Key Research and Development Program of China (2022YFB3505800); Natural Science Foundation of Inner Mongolia (2022LH MS05006)

  • 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:

    為了實(shí)現(xiàn)稀土資源的平衡應(yīng)用且降低RE-Fe-B稀土永磁材料的價格，針對混合稀土基永磁材料進(jìn)行研究，分別采用單、雙主相工藝制備了名義成分[(Pr,Nd)1-xMMx]30.3(Fe,Co)balM0.73B0.98 （x=0.3，0.5和0.7，質(zhì)量分?jǐn)?shù)）的磁體，對比研究其磁性能和抗腐蝕性。研究發(fā)現(xiàn)：雙主相工藝制備的磁體相比單主相工藝制備的同成分磁體展現(xiàn)了優(yōu)越的磁性能和抗腐蝕性。當(dāng)x=0.5，雙主相磁體的磁性能為Br=1.308 T，Hcj=799.98 kA/m和(BH)max=325.6436 kJ/m3，遠(yuǎn)高于同成分的單主相磁體的性能（Br=1.297 T，Hcj=746.8868 kA/m 和(BH)max=317.8428 kJ/m3）。這種改進(jìn)源于富稀土相分布的改進(jìn)以及主相晶粒間和晶粒內(nèi)部耦合作用的增強(qiáng)。當(dāng)雙主相磁體暴露在濕熱環(huán)境下時，磁體中不僅存在富稀土相腐蝕，也存在主相晶粒的腐蝕成粉現(xiàn)象，這主要是由于富稀土相與水蒸氣和氧氣反應(yīng)時產(chǎn)生氫氣，導(dǎo)致主相晶粒被氫化，由于主相晶粒間和晶粒內(nèi)部的鑭鈰分布差異，產(chǎn)生大的應(yīng)力，導(dǎo)致其表現(xiàn)出區(qū)別于單主相磁體的腐蝕行為。

    Abstract:

    In order to reduce the RE-Fe-B material cost and to balance the utilization of rare earth sources, [(Pr, Nd)1?xMMx]30.3(Fe, Co)bal- M0.73B0.98 (x =0.3, 0.5, 0.7, wt%) magnets were prepared by double main phase (DMP) and single main phase (SMP) processes. DMP magnets are superior to SMP magnets with the same nominal composition in magnetic properties and corrosion resistance. For x=0.5, the magnetic properties of DMP magnets are Br=1.308 T, Hcj=799.980 kA/m and (BH)max=325.6436 kJ/m3, which are higher than those for SMP magnets (Br=1.297 T, Hcj=746.8868 kA/m and (BH)max=317.8428 kJ/m3) with the same nominal composition, and the impro-ved RE-rich phase distribution and REs heterogeneity distribution are the main reasons. When DMP magnets are exposed to a hygro-thermal environment, there is not only RE-rich phase corrosion, but also pulverized main phase grain due to hydrogenation behavior difference between LaCe-rich and LaCe-lean shell-core within one individual grain. As a result, it is demonstrated that DMP techni-que is an effective approach to improve the permanent magnetic properties and corrosion resistance of MM-based sintered magnets.

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

連昕麗,周建軍,李仕林,趙院紅,王長鵬,王印,劉飛,章明,左建華,白鎖,劉艷麗,李柱柏,李永峰.雙主相混合稀土基RE-Fe-B磁體的磁性能和抗腐蝕性改進(jìn)[J].稀有金屬材料與工程,2024,53(3):660~666.[Lian Xinli, Zhou Jianjun, Li Shilin, Zhao Yuanhong, Wang Changpeng, Wang Yin, Liu Fei, Zhang Ming, Zuo Jianhua, Bai Suo, Liu Yanli, Li Zhubai, Li Yongfeng. Enhancement of Magnetic Properties and Corrosion Resistance for Misch Metal Based RE-Fe-B Magnets Prepared by Double Main Phase Process[J]. Rare Metal Materials and Engineering,2024,53(3):660~666.]
DOI：10.12442/j. issn.1002-185X.20230230

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:2023-04-21
  • 最后修改日期:2024-03-04
  • 錄用日期:2023-06-26
  • 在線發(fā)布日期: 2024-03-22
  • 出版日期: 2024-03-20