Structural, morphological and magnetic characterization of electrodeposited Co–Fe–W alloys

Noce, Rodrigo Della; Benedetti, Assis Vicente; Magnani, Marina; Passamani, E. C.; Kumar, Hardeep; Cornejo, D.R.; Ospina, Carlos

doi:10.1016/j.jallcom.2014.05.157

Cited by 25 publications

(5 citation statements)

References 30 publications

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“…However, the charge transfer resistance values of ternary alloy coatings were lower compared to those of the binary alloy coatings due to preferential dissolution of iron from the matrix [9]. These results show that same ternary alloys (Fe-W-Co/Ni) are potential materials for applications in magnetic devices [10]. Also, Fe-W alloys have attracted magnetic properties, electrical resistivity, and reduced films stress that allows using it as new material in micro-/nano-electromechanical systems (MEMS/NEMS) [11].…”

Section: Introductionmentioning

confidence: 88%

Tribological and Corrosion Properties of Iron-Based Alloys

Vernickaite

Antar

Nicolenco

et al. 2015

Proceedings of the 8th International Scientific Conference "BALTTRIB 2015"

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Corrosion is responsible for industrial maintenance and industrial accidents costs. A helpful way to prevent corrosion is to develop advanced materials with highly anti-corrosive properties. The electrodeposition is one of the most attractive methods for obtaining these materials. This work deals with evaluation of the tribological and corrosion behaviour of electrodeposited Fe-W and Fe-W-P alloys. Electrodeposits were obtained from 4 different baths and were characterized by means of scanning electron microscopy; X-ray dispersive energy spectroscopy; X-ray diffraction spectroscopy. The hardness was determined by Micro-indentation carried out at normal forces varying from 98 mN up to 980 mN with a loading rate of 1961 mN/min. A ball-disc tribometer was used to study the tribological properties at 90 °C. A diamond indenter, having a radius of 100 µm, was used to carry the scratch test. Corrosion behaviour was studied using polarization and electrochemical impedance spectroscopy technique. It was investigated that in all cases Fe-W and Fe-W-P alloy coatings exhibit greater micro-hardness than the stainless steel substrate. The amorphous-like ternary Fe-W-P alloy coatings demonstrate higher wear and corrosion resistance and lower friction coefficient compared to binary Fe-W alloy coating.

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Section: Introductionmentioning

confidence: 88%

Tribological and Corrosion Properties of Iron-Based Alloys

Vernickaite

Antar

Nicolenco

et al. 2015

Proceedings of the 8th International Scientific Conference "BALTTRIB 2015"

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“…The maximum H c was 4.12 Oe at 42 nm due to the pinning effect of the domain wall, which was not easy to move, resulting in the increase in coercivity [29,30]. The amorphous structure of the Co 40 Fe 40 W 20 films indicated a smaller H c due to the small grain size distribution [31,32]. A strong crystalline peak occurred at 42 nm in XRD result.…”

Section: Journal Of Nanomaterialsmentioning

confidence: 99%

Magnetic Properties, Adhesion, and Nanomechanical Property of Co₄₀Fe₄₀W₂₀ Films on Si (100) Substrate

Liu

Chang

et al. 2020

Journal of Nanomaterials

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In this study, a Co40Fe40W20 alloy was sputtered onto Si (100) with thicknesses (tf) ranging from 18 to 90 nm, and the corresponding structure, magnetic properties, adhesive characteristics, and nanomechanical properties were investigated. X-ray diffraction (XRD) patterns of the Co40Fe40W20 films demonstrated a significant crystalline body-centered cubic (BCC) CoFe (110) structure when the thickness was 42 nm, and an amorphous status was shown when the thickness was 18 nm, 30 nm, 60 nm, and 90 nm. The saturation magnetization (Ms) showed a saturated trend as tf was increased. Moreover, the coercivity (Hc) showed a minimum 1.65 Oe with 30 nm. Hc was smaller than 4.5 Oe owing to the small grain size distribution and amorphous structure, indicating that the Co40Fe40W20 film had soft magnetism. The low-frequency alternating current magnetic susceptibility (χac) decreased as the frequency was increased. The χac revealed a thickness effect when greater thicknesses had a large χac. The maximum χac and optimal resonance frequency (fres) of Co40Fe40W20 were investigated. The maximum χac indicated the spin sensitivity and was maximized at the optimal resonance frequency. The 90 mm thickness had the highest χac 0.18 value at an fres of 50 Hz. The contact angles of the Co40Fe40W20 films are less than 90°, which indicated that the film had a good wetting effect and hydrophilicity. The surface energy was correlated with the adhesion and displayed a concave-down trend. CoFeW films can be used as a seed or buffer layer; therefore, the surface energy and adhesion are very important. The highest surface energy was 30.12 mJ/mm2 at 42 nm and demonstrated high adhesion. High surface energy has corresponding strong adhesive performance. The increased surface roughness can induce domain wall pinning effect and high surface energy, causing a high coercivity and strong adhesion. The increase of hardness and Young’s modulus could be reasonably inferred from the thinner CoFeW films. The hardness and Young’s modulus of CoFeW films are also displayed to saturated tendency when increasing thickness.

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“…The common characteristics of rare earth magnetic materials are high saturation magnetization (Ms), Curie temperature (Tc), and magnetic anisotropy field (H k ), particularly. In general, the addition of rare-earth (RE) elements to CoFe alloy can improve its hardness, corrosion resistance, and durability, as well as improve heat resistance and other benefits [ 8 , 9 , 10 ]. Due to their widespread use in numerous applications, including spintronic, fiber amplifier, photoluminescence, and laser, RE element-doped nanomaterials have become the center of interest.…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing and Thickness of Co40Fe40Yb20 Thin Films on Various Physical Properties on a Glass Substrate

Liu

Chang

Chiang³

et al. 2022

Materials

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The aim of this work is to investigate the effect of annealing and thickness on various physical properties in Co40Fe40Yb20 thin films. X-ray diffraction (XRD) was used to determine the amorphous structure of Co40Fe40Yb20 films. The maximum surface energy of 40 nm thin films at 300 °C is 34.54 mJ/mm2. The transmittance and resistivity decreased significantly as annealing temperatures and thickness increased. At all conditions, the 10 nm film had the highest hardness. The average hardness decreased as thickness increased, as predicted by the Hall–Petch effect. The highest low-frequency alternative-current magnetic susceptibility (χac) value was discovered when the film was annealed at 200 °C with 50 nm, and the optimal resonance frequency (ƒres) was in the low frequency range, indicating that the film has good applicability in the low frequency range. At annealed 200 °C and 50 nm, the maximum saturation magnetization (Ms) was discovered. Thermal disturbance caused the Ms to decrease when the temperature was raised to 300 °C. The optimum process conditions determined in this study are 200 °C and 50 nm, with the highest Ms, χac, strong adhesion, and low resistivity, which are suitable for magnetic applications, based on magnetic properties and surface energy.

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Structural, morphological and magnetic characterization of electrodeposited Co–Fe–W alloys

Cited by 25 publications

References 30 publications

Tribological and Corrosion Properties of Iron-Based Alloys

Tribological and Corrosion Properties of Iron-Based Alloys

Magnetic Properties, Adhesion, and Nanomechanical Property of Co₄₀Fe₄₀W₂₀ Films on Si (100) Substrate

Effect of Annealing and Thickness of Co40Fe40Yb20 Thin Films on Various Physical Properties on a Glass Substrate

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Structural, morphological and magnetic characterization of electrodeposited Co–Fe–W alloys

Cited by 25 publications

References 30 publications

Tribological and Corrosion Properties of Iron-Based Alloys

Tribological and Corrosion Properties of Iron-Based Alloys

Magnetic Properties, Adhesion, and Nanomechanical Property of Co40Fe40W20 Films on Si (100) Substrate

Effect of Annealing and Thickness of Co40Fe40Yb20 Thin Films on Various Physical Properties on a Glass Substrate

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Magnetic Properties, Adhesion, and Nanomechanical Property of Co₄₀Fe₄₀W₂₀ Films on Si (100) Substrate