B含量对Fe90-xPt10Bx(x=15~40)液态急冷合金组织结构和磁性能的影响

Translated title of the contribution: Effects of B Content on Structure Evolution and Magnetic Properties of Melt-Spun Fe90-xPt10Bx(x=15~40) Alloys

Meiling Yin, Dianguo Ma, Yanhui Li, Chenliang Yin, Lin Qi, Yubuta Kunio, Wei Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

The structure evolution and magnetic properties of melt-spun Fe90-xPt10Bx(x=15~40) alloys before and after annealing were investigated. The results show that the increase of x from 15 to 25~30 can improve the amorphous forming ability of the alloy, and the melt-spun structure transforms from a composite composed of amorphous and fcc-FePt phases to a single amorphous phase. Further increasing x to 35 and 40 results in the formation of fcc-FePt+Fe2B+FeB and L10-FePt+FeB phases, respectively. After appropriate annealing, dual phases of fcc-FePt+Fe2B are formed for the alloys with x=15~20, which have soft magnetic properties, while the nanocomposite structure consisting of L10-FePt together with Fe2B and/or FeB phases is obtained for the alloys with x=25~40, which exhibit the characteristics of the nanocomposite magnets. The best permanent magnetic properties are obtained for the alloy with x=30 annealed at 823 K for 900 s, of which the coercivity, remanence and maximum energy product are 173.2 kA/m, 1.20 T, and 88.3 kJ/m3, respectively. The good permanent magnetic performance is due to the formation of a more fine and homogeneous L10-FePt/Fe2B nanocomposite structure with an average grain size of about 15 nm.

Translated title of the contributionEffects of B Content on Structure Evolution and Magnetic Properties of Melt-Spun Fe90-xPt10Bx(x=15~40) Alloys
Original languageChinese (Traditional)
Pages (from-to)4445-4449
Number of pages5
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume50
Issue number12
Publication statusPublished - Dec 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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