Magnetic properties and crystallization kinetics of (Fe_100–xNi_x)₈₀Nb₄Si₂B₁₄ metal amorphous nanocomposites

Journal Article · Tue Sep 26 00:00:00 EDT 2017 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2017.08.043· OSTI ID:1435136

Aronhime, Natan ^[1]; Zoghlin, Eli ^[1]; Keylin, Vladimir ^[2]; Jin, Xin ^[1]; Ohodnicki, Paul ^[3]; McHenry, Michael E. ^[1]

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1. Carnegie Mellon Univ., Pittsburgh, PA (United States)
2. Carnegie Mellon Univ., Pittsburgh, PA (United States); NASA Glenn Research Center, Cleveland, OH (United States); Vantage Partners LLC, Brook Park, OH (United States)
3. National Energy Technology Lab. (NETL), Pittsburgh, PA, (United States)

Fe-Ni based metal amorphous nanocomposites (MANCs) are investigated in the pseudo-binary alloys (Fe_100–xNi_x)₈₀Nb₄Si₂B₁₄. To optimize the soft magnetic properties of the nanocomposites, primary and secondary crystallization kinetics must be understood. As such, primary and secondary crystallization temperatures are determined by differential scanning calorimetry, and activation energies are calculated, along with the resulting crystalline phases. Time-temperature-transformation diagrams for primary and secondary crystallization in (Fe₇₀Ni₃₀)₈₀Nb₄Si₂B₁₄ are presented. Saturation magnetization and Curie temperature are determined. In conclusion, the shape of magnetization vs. time curves for (Fe₃₀Ni₇₀)₈₀Nb₄Si₂B₁₄ at various temperatures suggest that the secondary crystal product often consumes some of the primary crystalline product.

• Research Organization: Carnegie Mellon Univ., Pittsburgh, PA (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: EE0007867
• OSTI ID: 1435136
• Journal Information: Scripta Materialia, Vol. 142, Issue C; ISSN 1359-6462
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Soft magnetic materials
Nanocomposites
Crystallization kinetics