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Mostrando ítems 91-100 de 113
Artículo
The use of amorphous boron powder enhances mechanical alloying in soft magnetic FeNbB alloy: A magnetic study
(AIP Publishing, 2013)
Saturation magnetization and magnetic anisotropy have been studied during mechanical alloying of Fe75Nb10B15 alloys prepared using crystalline and commercial amorphous boron. The evolution of saturation magnetization ...
Artículo
Relationship between mechanical amorphization and boron integration during processing of FeNbB alloys
(Elsevier, 2014)
Fe75Nb10B15 alloys were prepared by mechanical alloying using different boron powders (crystalline B, commercial amorphous B, optimized amorphous B and intermetallic FeB) in the initial mixture, in order to study the ...
Artículo
Distribution of transition temperatures in magnetic transformations: Sources, effects and procedures to extract information from experimental data
(Multidisciplinary Digital Publishing Institute (MDPI), 2020)
The presence of a distribution of transition temperatures (DTT) is ubiquitous in materials science. It is common to ascribe deviations from theoretical pure-phase behavior to this fact. To adapt the different pure phase ...
Artículo
Soft magnetic properties of high-temperature nanocrystalline alloys: Permeability and magnetoimpedance.
(AIP Publishing, 2003)
The technological applicability of FeCoNbBCu alloys is suggested in terms of measurements of room temperature magnetoimpedance and temperature dependence of magnetic permeability m r . Results for ...
Artículo
Magnetic and Structural Characterization of Mo-Hitperm Alloys with Different Fe/Co Ratio
(Elsevier, 2011)
The influence of the Co content on the microstructure and magnetic behaviour of a series of amorphous and nanocrystalline (FeCo) 79Mo8Cu1B12 alloys is reported. Changes in the magnetic properties provoked by the microstructural ...
Artículo
Role of starting phase of boron on the mechanical alloying of FeNbB composition
(Elsevier, 2013)
Mechanical alloyed Fe75Nb10B15 systems, prepared with crystalline or commercial amorphous boron and a similar composition with the same Fe/Nb ratio but no boron, have been studied as a function of milling time in the aim ...
Artículo
Preferential Co Partitioning to α-Fe in Nanocrystalline CoFeNbB Alloys by Mn Addition
(Elsevier, 2009)
Influence of Mn addition on the microstructure and hyperfine parameters of amorphous and nanocrystalline Co60(FeMn)18Nb6B16 alloys has been studied. Although Mn addition does not yield significant differences in crystallization ...
Artículo
Kinetic Analysis of Non-isothermal Volume Melting Processes by Differential Scanning Calorimetry
(Springer Nature, 2023)
The onset of melting of standard samples, ascribed to surface melting, is generally used for calibration of calorimeters. However, in non-isothermal conditions, nucleation-driven volume melting, which is thermally activated, ...
Artículo
Ball milling as a way to produce magnetic and magnetocaloric materials: a review
(Springer Nature, 2017)
Ball milling (BM) is a well-established technique for producing different materials in powder shape. Dynamical analysis of BM helps to optimize the process through simple but general relations (e.g., definition of an ...
Artículo
A Review of Different Models Derived from Classical Kolmogorov, Johnson and Mehl, and Avrami (KJMA) Theory to Recover Physical Meaning in Solid-State Transformations
(Wiley, 2022)
The classical theory of solid-state transformation based on nucleation and growth processes, developed by Kolmogorov, Johnson and Mehl, and Avrami (KJMA theory), is widely used in many different fields of research. In KJMA ...