Effect of Cu additions on the magnetic properties and microstructure of FeCoNbB nanocrystalline alloy

F. L. Kong, H. Men, M. X. Zhang, T. C. Liu, G. Q. Xie, B. L. Shen

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    The influence of Cu content and the annealing conditions in the (Fe 0.5Co 0.5) 85-xNb 7B 8Cu x (x = 0.5, 1.0, 1.5) soft magnetic alloys on the magnetic properties and microstructure were investigated. The additions of Cu lower the primary and secondary crystallization temperatures and the α → γ phase transformation temperature of the Fe- CoNbB alloys. The (Fe 0.5Co 0.5) 84Nb 7B 8Cu1 alloy annealed at 873 K for 3.6 ks, in which α-(Fe, Co) nanocrystalline phase with diameter of 5 nm precipitated from the amorphous matrix, shows the best soft magnetic properties. The resulting (Fe 0.5Co 0.5) 84Nb 7B 8Cu 1 nanocrystalline alloy exhibits a high saturation flux density of 1.88 T, low coercivity of 42 A/m, very high Curie temperature of 1240 K, as well as low core loss of 770 W/kg at 10 kHz under maximum magnetization of 1 T.

    Original languageEnglish
    Pages (from-to)211-215
    Number of pages5
    JournalApplied Physics A: Materials Science and Processing
    Volume108
    Issue number1
    DOIs
    Publication statusPublished - 2012 Jul

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)

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