Relationship between Microstructures and Soft Magnetic Properties of Simultaneously P and Cu-Added Fe-Nb-B Ribbon Alloys

• Yubuta Kunio

  Institute for Materials Research, Tohoku University

• Mund Enrico

  Institute for Materials Research, Tohoku University IFW Dresden, Institute for Metallic Materials

• Makino Akihiro

  Institute for Materials Research, Tohoku University

• Inoue Akihisa

  Institute for Materials Research, Tohoku University

Abstract

The additional effect of P and Cu on the magnetic properties of Fe-Nb-B nanocrystalline soft magnetic alloys was investigated from the viewpoint of microstructures. Mean size of α-Fe grain for both Fe_83.8Nb_6.6B_9.6 and Fe_83.7Nb_6.6B_8.6P₁Cu_0.1 ribbon alloys are measured to be about 8.5 nm, and size distribution of those are measured to be 0.391 and 0.236, respectively, using an oval approximation for shape of α-Fe grains. Values of coercivity for Fe_83.8Nb_6.6B_9.6 and Fe_83.7Nb_6.6B_8.6P₁Cu_0.1 alloys calculated using a two-phase random anisotropy model are 6.73 and 4.93 A·m⁻¹, and measured ones are 8.64 and 3.74 A·m⁻¹, respectively. The improvement probably originates from the decrease in the distribution of the α-Fe grain size in the crystallized structure by the simultaneous addition.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (8), 1780-1784, 2008

  The Japan Institute of Metals and Materials

Keywords

• nanocrystalline soft magnetic alloy
• coercivity
• grain size distribution
• random anisotropy model

Details

• CRID: 1390001204251387264
• NII Article ID: 10024270935
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.mra2008134
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 9601228
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9601228
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/8/49_MRA2008134/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed