Diffusion-Controlled Nanocrystallization of the Fe73.5Cu1Nb3Si15.5B7 Finemet Amorphous Alloy

R.M. Ribeiro; R.S. de Biasi; D.R. dos Santos; Dílson Silva dos Santos

doi:10.4028/www.scientific.net/MSF.570.120

Paper Titles

Processing and Simulation for Consolidation of Nanostructured Al-Cu Powder Alloys
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Nanocrystallization Kinetics of Amorphous Fe-Based Multicomponent Alloy by Non-Isothermal Analysis
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Electrolytic Manganese Dioxide Nucleation and Growth on Titanium Substrates
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Diffusion-Controlled Nanocrystallization of the Fe_73.5Cu₁Nb₃Si_15.5B₇ Finemet Amorphous Alloy
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Crystallization of Amorphous Al₈₅Ce₅Ni₁₀ Ribbon
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Shape and Size Dependent Melting Point Temperature of Nanoparticles
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Structural and Magnetic Characterization of Polyaniline Composite Films
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Sol-Gel-Microemulsion Titania Nanoparticles and its Performance in Photocatalytic Oxidation of Acetic Acid
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HomeMaterials Science ForumMaterials Science Forum Vol. 570Diffusion-Controlled Nanocrystallization of the...

Diffusion-Controlled Nanocrystallization of the Fe_73.5Cu₁Nb₃Si_15.5B₇ Finemet Amorphous Alloy

Abstract:

Crystallization of the amorphous metallic alloy Fe73.5 Cu1Nb3 Si8.5 B14 was investigated by ferromagnetic resonance (FMR), small angle in situ X-ray scattering (SAXS/WAXS) and differential scanning calorimetry (DSC). Only one crystalline phase was observed by WAXS and only one peak was observed by DSC. The activation energies, calculated from FMR and DSC data, were 287 kJ.mol-1 and 313.4 kJ.mol-1, respectively. The values calculated for the Avrami exponent were 0.98 (FMR) and 1.4 (DSC). These values correspond to different mechanisms of nucleation and growth; however, the SAXS /WAXS results suggest that the dominant mechanisms are nucleation and growth of crystals from small dimensions.