Unveiling the correlation between oxidation and magnetic properties in dual-phase FeNiBCu nanocrystalline alloys

IF 6.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Materials Research and Technology-Jmr&t Pub Date : 2025-01-04 DOI:10.1016/j.jmrt.2025.01.010

Long Hou , Wenjun Liu , Mengen Shi , Benjun Wang , Quanhe Bao , Cong Liu , Hanchen Feng , Qizhong Shang , Weihuo Li , Zhineng Xie

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Abstract

Achieving the industrial production of high-performance nanocrystalline alloys is an active research topic in which oxidation is an inescapable and top-priority issue that needs to be addressed. In this study, we conducted a comprehensive investigation into the oxidation and crystallization behaviors of dual-phase FeNiBCu nanocrystalline alloys, as well as the mechanisms underlying the relationship between oxidation and magnetic properties. The chemical valence states and microstructures analysis, indicative of galvanic cell structures, demonstrated that the concentration and activity of Fe in nanocrystals were higher than those in the matrix, thus providing effective nucleation sites for Fe-oxides. Unique delamination morphology and inner structure distinctly regulated the magnetization-magnetic softness (B_s-H_c) tradeoff. Consequently, the alloy underwent simultaneous crystallization and oxidation, affording a high B_s of 1.70 T and a low H_c of 3.5 A/m. These results enhance our understanding of the effect of oxidation on magnetic properties and provide a theoretical reference for the industrial heat treatment of high-performance nanocrystalline alloys.

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来源期刊

Journal of Materials Research and Technology-Jmr&t Materials Science-Metals and Alloys

CiteScore

8.80

自引率

9.40%

发文量

1877

审稿时长

35 days

期刊介绍： The Journal of Materials Research and Technology is a publication of ABM - Brazilian Metallurgical, Materials and Mining Association - and publishes four issues per year also with a free version online (www.jmrt.com.br). The journal provides an international medium for the publication of theoretical and experimental studies related to Metallurgy, Materials and Minerals research and technology. Appropriate submissions to the Journal of Materials Research and Technology should include scientific and/or engineering factors which affect processes and products in the Metallurgy, Materials and Mining areas.