Core-shell structure nanoprecipitates in Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys: A phase field study

Zhao, Yuhong; Sun, Yuanyang; Hou, Hua

doi:10.1016/j.pnsc.2022.04.001

Cited by 108 publications

(6 citation statements)

References 49 publications

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“…As the precipitate coarsens, the interaction between the precipitate and the matrix leads to stress concentration around it, and the stress concentration area may cause local strain energy changes. 28 The second-phase particle (MnS) precipitates and segregates towards grain boundaries, coarsening to a certain size, thereby causing changes in local strain energy at the grain boundaries. 8a-8b illustrate the magnetization curve of the electrodeposited Fe-55 wt%Ni alloy, showing how saturation magnetization and coercivity vary with annealing temperature and holding time.…”

Section: Resultsmentioning

confidence: 99%

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Ren,

Lan,

Guo

2024

J. Electrochem. Soc.

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In this study, pulse reverse current electrodeposition was employed to fabricate Fe-55wt%Ni alloy. Abnormal grain growth induced by the precipitation of second-phase particles during annealing resulted in a coarse-grained electrodeposited Fe-55wt%Ni alloy. The grain evolution process during annealing was investigated, and the temperature for abnormal grain growth was determined through the high-temperature confocal microscopy technique. Subsequently, the mechanism of abnormal grain growth was investigated. The results suggest that abnormal grain growth occurs at approximately 1003 K, attributed to the preferential growth of (110) oriented grains due to local strain energy changes caused by the precipitation and coarsening of the second-phase particles (MnS). The preferred orientation of the grains transitioned from (111) to (110). Annealing at 1073 K for 2 h resulted in an average grain size increase to approximately 200 μm. Under these conditions, the magnetic properties of the alloy reached optimal levels, with a magnetization saturation strength of 186.7 emu/g and a coercivity of less than 1 Oe. This research presents a novel approach to preparing coarse-grained electrodeposited Fe-Ni alloys, significantly enhancing their magnetic properties.

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Section: Resultsmentioning

confidence: 99%

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Ren,

Lan,

Guo

2024

J. Electrochem. Soc.

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“…This finding demonstrated that the barium hexaferrite crystal structure initially contracted after doping with Al and Co, but the system expanded when the doping level of Co increased. This behavior is due to the fact that the radii of the Al 3+ (0.536 Å) are less than Fe 3+ (0.644 Å) [47,48]. Initially, Al doping was greater than that of Co.…”

Section: Structural Investigationmentioning

confidence: 99%

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites

Ijaz,

Asif,

El-Zahhar

et al. 2023

Phys. Scr.

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Magnetic and structural characteristics of M-type barium hexaferrite nanoparticles can be tuned by doping different di or trivalent metal ions. Here BaFe11.5-xAl0.5CoxO19 hexaferrite nanoparticles were synthesized using a sol-gel process, and the influence of doping concentrations on M-type BaFe11.5-xAl0.5CoxO19 hexaferrite nanoparticles was deliberated. The XRD analysis confirms the formation of ferrites successfully. When the doping level increased, the grain dimension (D) initially reduced and then increased. Similarly, the lattice constants ‘a’ and ‘c’ decreased initially and then increased. The findings indicated that the (Mr/Ms) ratio decreased initially as the doping content increased, but at higher doping ranges, it started to rise. At the same time, coercivity (Hc) and magneto-crystalline an-isotropy field (Ha) increased as the doping level increased. Excellent magnetic characteristics were obtained for BaFe11.5-xAl0.5CoxO19 hexaferrites at doping content of (x=1.5), with magnetic moment 10.80µB, saturation magnetization 57.35 emu/g, and coercivity 5.21 kOe along anisotropic applied field of 1.62 kOe. The findings mentioned above imply that magnetic characteristics of M-type Barium hexaferrites can be significantly improved upon doping of Cobalt against Aluminium substituted hexaferrite, which will make such types of Ba-hexaferrite very useful in many applications, for example, in magnetic filters, memory devices, and recording media, etc.

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“…16 Transition metal-based materials have attracted interest as alternatives to pure metal catalysts due to their mechanical and electrochemical strength, 17,18 and their exceptional reactivity, durability, and abundant availability make them suitable choices as catalysts. 19,20 Furthermore, their properties can be tailored by adopting different strategies such as alloying, 21 forming heterostructures with other potential materials, 22,23 tailoring their morphology 24 and doping with other suitable elements. Among the transition metal-based materials, the characteristics of cobalt-based materials make them appropriate candidates for catalytic applications, providing a viable solution to reduce the dependence on precious metals.…”

Section: Introductionmentioning

confidence: 99%

Beyond the ordinary: exploring the synergistic effect of iodine and nickel doping in cobalt hydroxide for superior energy storage applications

Yousaf,

Zulfiqar,

Khalid

et al. 2024

RSC Adv.

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Core-shell structure nanoprecipitates in Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys: A phase field study

Cited by 108 publications

References 49 publications

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites

Beyond the ordinary: exploring the synergistic effect of iodine and nickel doping in cobalt hydroxide for superior energy storage applications

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Core-shell structure nanoprecipitates in Fe-xCu-3.0Mn-1.5Ni-1.5Al alloys: A phase field study

Cited by 108 publications

References 49 publications

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Improving the Magnetic Properties of Electrodeposited Fe-55wt%Ni Alloy via Abnormal Grain Growth Induced by Second-Phase Particles

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe11.5Al0.5O19 hexaferrites

Beyond the ordinary: exploring the synergistic effect of iodine and nickel doping in cobalt hydroxide for superior energy storage applications

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Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe_11.5Al_0.5O₁₉ hexaferrites