Enhancing the coercivity of Nd-Cu-diffused Nd-Fe-B permanent magnets by Nb-assisted grain boundary pinning

M. B. Siva Kumar; D. Prabhu; M. Sadhasivam; B. Manjusha; N. Chandrasekaran; K. G. Pradeep; G. Sundararajan; R. Gopalan

doi:10.1080/21663831.2022.2104139

Chinese

您当前的位置：

首页 >

文章列表页 >

Enhancing the coercivity of Nd-Cu-diffused Nd-Fe-B permanent magnets by Nb-assisted grain boundary pinning

Original Reports | 更新时间：2026-08-19

- Enhancing the coercivity of Nd-Cu-diffused Nd-Fe-B permanent magnets by Nb-assisted grain boundary pinning
- Materials Research Letters Vol. 10, Issue 12, Pages: 780-787(2022)
- 作者机构：
  
  1. a Centre for Automotive Energy Materials International Advanced Research Centre for Powder Metallurgy and New Materials IIT Madras Research Park Chennai Tamil Nadu India
  2. a Centre for Automotive Energy Materials International Advanced Research Centre for Powder Metallurgy and New Materials IIT Madras Research Park Chennai
  3. b Correlative Microscopy Laboratory Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai
  4. b Correlative Microscopy Laboratory Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras Chennai Tamil Nadu India
  5. c National Facility for Atom Probe Tomography Indian Institute of Technology Madras Chennai
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2022.2104139
  CLC：
- Online First：30 July 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
M. B. Siva Kumar, D. Prabhu, M. Sadhasivam, et al. Enhancing the coercivity of Nd-Cu-diffused Nd-Fe-B permanent magnets by Nb-assisted grain boundary pinning[J]. Materials Research Letters, 2022, 10(12): 780-787.
DOI：

M. B. Siva Kumar, D. Prabhu, M. Sadhasivam, et al. Enhancing the coercivity of Nd-Cu-diffused Nd-Fe-B permanent magnets by Nb-assisted grain boundary pinning[J]. Materials Research Letters, 2022, 10(12): 780-787. DOI： 10.1080/21663831.2022.2104139.

摘要

Abstract

We report the effect of grain boundary diffusion of the Nd-Cu eutectic phase and the influence of Nb on the microstructure and magnetic properties of Nd-Fe-B melt-spun ribbons. The Atom probe tomography analysis indicated the presence of Nb clusters (∼10 nm)

which possibly restricts grain growth during diffusion annealing while facilitating Nd-Cu grain boundary decoration. Correspondingly

the coercivity was enhanced from the initial 1.2 T of the as-prepared to 2.1 T for the 20 wt.% Nd-Cu diffusion annealed (600°C

2 h). Incidentally

the as-diffused sample exhibited a high coercivity of ∼1 T at 150°C

making it suitable for high-temperature applications.

关键词

Keywords

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

On the formation and growth of grain boundary κ-carbides in austenitic high-Mn lightweight steels

Unravelling the origin of multiple cracking in an additively manufactured Haynes 230

Activation energy of diffusion determined from a single in-situ neutron reflectometry experiment

Rapid assessment of interfacial stabilization mechanisms of metastable precipitates to accelerate high-temperature Al-alloy development

Evaluation of phase stability and diffusion kinetics in novel BCC-structured high entropy alloys

Related Author

Dierk Raabe

Dirk Ponge

Xuyang Zhou

Binhan Sun

Mohamed N. Elkot

Ji Gu

Junyang He

Rui Wang

Related Institution

a Max-Planck-Institut für Eisenforschung GmbH

c Key Laboratory of Pressure Systems and Safety Ministry of Education School of Mechanical and Power Engineering East China University of Science and Technology

b Department of Metallurgical and Materials Engineering Suez University

a Max-Planck-Institut für Eisenforschung GmbH Düsseldorf Germany

d School of Materials Science and Engineering Harbin Institute of Technology

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰