G. A. Pérez Alcázar
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View article: The effect of Cu on phase stability and magnetic properties of τ-MnAl: A comparative study of Mn55-xAl45Cux and Mn55Al45-xCux (x = 0.0, 2.0, 2.5) alloys
The effect of Cu on phase stability and magnetic properties of τ-MnAl: A comparative study of Mn55-xAl45Cux and Mn55Al45-xCux (x = 0.0, 2.0, 2.5) alloys Open
The hard ferromagnetic τ-phase in Mn-Al material system continues to attract attention since it has potential to be developed as permanent magnet without the use of critical/expensive elements. However, this phase is metastable, requiring …
View article: Characterization of Fe3O4 Nanoparticles for Applications in Catalytic Activity in the Adsorption/Degradation of Methylene Blue and Esterification
Characterization of Fe3O4 Nanoparticles for Applications in Catalytic Activity in the Adsorption/Degradation of Methylene Blue and Esterification Open
The aim of this study is to evaluate the applicability of the catalytic activity (CA) of the Fe3O4 magnetic system in the adsorption/degradation of methylene blue and esterification. The thermal decomposition method allowed the preparation…
View article: Optimized Route for the Fabrication of MnAlC Permanent Magnets by Arc Melting
Optimized Route for the Fabrication of MnAlC Permanent Magnets by Arc Melting Open
The rare-earth-free MnAlC alloy is currently considered a very promising candidate for permanent magnet applications due to its high anisotropy field and relatively high saturation magnetization and Curie temperature, besides being a low-c…
View article: Production and Characterization of Nanostructured Powders of Nd2Fe14B and Fe90Al10 by Mechanical Alloying
Production and Characterization of Nanostructured Powders of Nd2Fe14B and Fe90Al10 by Mechanical Alloying Open
The objective of this work is to evaluate the applicability of exchange coupling between nanoparticles of Nd2Fe14B (hard magnetic material) and Fe90Al10 (soft magnetic material), as permanent magnets produced by surfactant-assisted mechani…
View article: Effect of Aluminum Content on the Dynamic Recrystallization of Fe18MnxAl0.74C Steels During Hot-Forging Treatments
Effect of Aluminum Content on the Dynamic Recrystallization of Fe18MnxAl0.74C Steels During Hot-Forging Treatments Open
In the present work, the dynamic recrystallization and microstructural evolution of the family of advanced high-strength steels Fe18Mn x Al0.74C are studied, varying the aluminum content in 0, 3, 6, and 9 wt pct subjected to hot-forging tr…
View article: Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction
Stacking Fault Energy Determination in Fe-Mn-Al-C Austenitic Steels by X-ray Diffraction Open
A critical assessment has been performed to determine the stacking fault energy (SFE) of the austenite phase in high manganese steels using X-ray diffraction (XRD). It was found that the SFE varies substantially with the chosen elastic con…
View article: Mechanochemical Synthesis and Nitrogenation of the Nd1.1Fe10CoTi Alloy for Permanent Magnet
Mechanochemical Synthesis and Nitrogenation of the Nd1.1Fe10CoTi Alloy for Permanent Magnet Open
In this work, the mechanochemical synthesis method was used for the first time to produce powders of the nanocrystalline Nd1.1Fe10CoTi compound from Nd2O3, Fe2O3, Co and TiO2. High-energy-milled powders were heat treated at 1000 °C for 10 …
View article: Structural, Magnetic and Mechanical Properties of Nd16 (Fe76−xCox)B8 0 ≤ x ≤ 25 Alloys
Structural, Magnetic and Mechanical Properties of Nd16 (Fe76−xCox)B8 0 ≤ x ≤ 25 Alloys Open
In this work, the structural, magnetic and mechanical properties of Nd16Fe76−xCoxB8 alloys with a varying Co content of x = 0, 10, 20 and 25 were experimentally investigated by X-ray diffraction (XRD), Mössbauer spectrometry (MS) and vibra…
View article: Structural, Magnetic, and Mechanical Properties of Nd<sub>16</sub>(Fe<sub>76-x</sub>Co<sub>x</sub>)B<sub>8</sub> 0 ≤ x ≤ 25 Alloys
Structural, Magnetic, and Mechanical Properties of Nd<sub>16</sub>(Fe<sub>76-x</sub>Co<sub>x</sub>)B<sub>8</sub> 0 ≤ x ≤ 25 Alloys Open
In this work, the structural, magnetic, and mechanical properties of Nd16Fe76-xCoxB8 alloys varying the Co content at x = 0, 10, 20 and 25, were experimentally investigated by X-Ray Diffraction (XRD), Mössbauer Spectrometry (MS), Vibr…
View article: Variation of Structural and Hyperfine Parameters of (Fe<sub>0.70</sub>Al<sub>0.30</sub>)<sub>1-x</sub>Nb<sub>x</sub>, with x=0, 0.05, 0.10 and 0.20 System
Variation of Structural and Hyperfine Parameters of (Fe<sub>0.70</sub>Al<sub>0.30</sub>)<sub>1-x</sub>Nb<sub>x</sub>, with x=0, 0.05, 0.10 and 0.20 System Open
Fe 0.70 Al 0.30 alloy is a bcc and ferromagnetic phase, being the Al atoms magnetic dilutor. In this work, we study the effect of the Nb on the structural and hyperfine behavior of the Fe 0.70 Al 0.30 alloy when atoms of Nb substitute atom…
View article: Pwr effect on crack initiation under equi-biaxial loading, first tests with a particular fatigue device
Pwr effect on crack initiation under equi-biaxial loading, first tests with a particular fatigue device Open
As many countries are now working to extend the life of their existing power plants, a thorough inventory of the various effects that could potentially represent a hazard to a safe long term operation is necessary. These structures, often …
View article: Investigations On Crack Propagation Under Cyclical Isothermal And Thermo-mechanical Loadings For A Type 304-L Stainless Steel Used For Pressurized Water Reactor
Investigations On Crack Propagation Under Cyclical Isothermal And Thermo-mechanical Loadings For A Type 304-L Stainless Steel Used For Pressurized Water Reactor Open
The integrity of structures exhibiting flaws in Pressurized Water Reactor (PWR) has to be assessed to meet safety criteria. This paper deals with crack-propagation under cyclic thermo-mechanical loadings, as encountered in class I austenit…
View article: Investigations On Crack Propagation Under Cyclical Isothermal And Thermo-mechanical Loadings For A Type 304-L Stainless Steel Used For Pressurized Water Reactor
Investigations On Crack Propagation Under Cyclical Isothermal And Thermo-mechanical Loadings For A Type 304-L Stainless Steel Used For Pressurized Water Reactor Open
The integrity of structures exhibiting flaws in Pressurized Water Reactor (PWR) has to be assessed to meet safety criteria. This paper deals with crack-propagation under cyclic thermo-mechanical loadings, as encountered in class I austenit…
View article: Preparation of Fe<sub>3</sub>O<sub>4</sub>Nanoparticles and Removal of Methylene Blue through Adsorption
Preparation of Fe<sub>3</sub>O<sub>4</sub>Nanoparticles and Removal of Methylene Blue through Adsorption Open
In this work, we studied the catalytic activity, structural properties, and behavior of a Fe3O4 magnetic system. The Fe3O4 nanoparticles were prepared by the thermal decomposition method. X-ray diffraction confirmed the presence of a struc…
View article: EFFECT OF HEAT TREATMENT ON THE STRUCTURAL AND MAGNETIC PROPERTIES OF THE SYSTEM Fe56.25Al43.75 PREPARED BY MECHANICAL ALLOYING
EFFECT OF HEAT TREATMENT ON THE STRUCTURAL AND MAGNETIC PROPERTIES OF THE SYSTEM Fe56.25Al43.75 PREPARED BY MECHANICAL ALLOYING Open
The study of the Fe56.25Al43.75 system prepared by Mechanical Alloying (MA), using elementary powders, at milling times of 12, 24, 48, 72, and 96 hours, named MA0 samples, showed that the alloy is consolidated at 48 hours. Samples that wer…
View article: Characterization of Magnesium Doped Lithium Iron Silicate
Characterization of Magnesium Doped Lithium Iron Silicate Open
The synthesis of Mg doped Li2Fe1–xMgxSiO4 (x = 0, 0.10 and 0.15) via solid-state reaction is reported. The product was characterized by Mössbauer spectroscopy (MS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), m…