A novel strategy for hierarchical structure in multicomponent nano-precipitated steels by high magnetic field aging

Qiu, Nianshuang; Yan, Jiacheng; Zuo, Xiaowei

doi:10.1016/j.scriptamat.2020.09.035

Cited by 17 publications

(3 citation statements)

References 34 publications

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“…For instance, the effect of an external magnetic field on copper-rich precipitates and Ni (AlMn) coprecipitates in steel is discussed. [46] The energy significantly increases the Gibbs free energy of the system under a magnetic field, which increases the assembly nuclear free energy, nucleation rate, and quantity density of the nanoparticles (Figure 3a, b). Therefore, the effect of the magnetic field on the liquid/solid interface energy is of great significance, which is helpful to analyze the intrinsic mechanism of the magnetic field on the nucleation and growth of crystals during the solidification process.…”

Section: Nucleation and Growthmentioning

confidence: 99%

“…For instance, the effect of an external magnetic field on copper‐rich precipitates and Ni (AlMn) coprecipitates in steel is discussed [46] . The energy significantly increases the Gibbs free energy of the system under a magnetic field, which increases the assembly nuclear free energy, nucleation rate, and quantity density of the nanoparticles (Figure 3a, b).…”

Section: Magnetic Field‐induced Construction Of Electrocatalystsmentioning

confidence: 99%

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Magnetic Field‐Assisted Construction and Enhancement of Electrocatalysts

et al. 2022

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Driven by the energy crisis and environmental pollution, developing sustainable clean energy is an effective strategy to realize carbon neutrality. Electrocatalytic reactions are crucial to sustainable energy conversion and storage technologies, and advanced electrocatalysts are required to improve the sluggish electrocatalytic reactions. The magnetic field, as a thermodynamic parameter independent of temperature and pressure, is vital in the construction of electrocatalysts and enhancement of electrocatalysis. In this Review, the recent progress of magnetic field‐assisted construction of electrocatalysts and enhancement of electrocatalysis is comprehensively summarized. Originating from the structure‐activity‐performance relationship of electrocatalysts, the fundamentals of the magnetic field‐induced construction of electrocatalysts, including the magnetocaloric effect, nucleation and growth, and phase regulation, have been illustrated. In addition, the magnetic effect on the electrocatalytic reaction, namely, the magnetothermal, magnetohydrodynamic and micro magnetohydrodynamic, Maxwell stress, Kelvin force, and spin selection effects, are discussed. Finally, the perspective and challenges for magnetic field‐assisted construction of electrocatalysts and enhancement of electrocatalysis are proposed.

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Section: Nucleation and Growthmentioning

confidence: 99%

Section: Magnetic Field‐induced Construction Of Electrocatalystsmentioning

confidence: 99%

Magnetic Field‐Assisted Construction and Enhancement of Electrocatalysts

et al. 2022

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“…The design and optimization of microstructure is therefore a key issue to achieve the desirable property and performance of materials. In recent years, the nucleation and growth of the precipitated phases attract more attentions for kinds of materials [1][2][3]. For the Fe-based nanocrystalline soft magnetic materials, the higher nucleation rate and smaller grain size of α-Fe in amorphous matrix are crucial to the magnetic properties, such as high saturation magnetic flux density, high magnetic permeability, low coercive force and low core loss [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Precipitation of α-Fe from Fe84−xSi4B12+x (x = 1, 3) Amorphous Alloys Under High Magnetic Field Annealing

Duan

Wang

et al. 2021

Acta Metall. Sin. (Engl. Lett.)

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This work aims to investigate the effects of high magnetic field annealing (HMFA) on the precipitation of α-Fe from Fe 84−x Si 4 B 12+x (x = 1, 3) amorphous precursors. Isothermal annealing process for Fe 81 Si 4 B 15 and Fe 83 Si 4 B 13 amorphous ribbons has been performed with and without the magnetic field. The magnetic field shows the effects of increasing the nucleation rate and decreasing the grain size of α-Fe crystals simultaneously, during the crystallization processes of the investigated amorphous alloys. By applying HMF, α-Fe crystals with more homogeneous distribution and smaller grain size are achieved in the amorphous matrix, which is crucial helpful to improve the magnetic properties for Fe-Si-B amorphous alloys. The mechanism of HMFA affecting the crystallization microstructure is also discussed in the present work.

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Magnetic field‐assisted electrocatalysis: Mechanisms and design strategies

Sun,

Lv,

Yao

et al. 2024

Carbon Energy

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Electrocatalysis has received a great deal of interest in recent decades as a possible energy‐conversion technology involving a variety of chemical processes. External magnetic field application is a powerful method for improving electrocatalytic performance that is customizable and compatible with existing electrocatalytic devices. In addition, magnetic fields can assist in catalyst synthesis and act on the catalytic reaction process. This paper systematically reviews the most recent developments in magnetic field‐assisted electrocatalytic enhancement technology. The enhancement of electrocatalysis by a magnetic field is mainly represented in the three features listed below: The spin selectivity effect improves the activity of the catalyst in a magnetic field; furthermore, magnetic fields can improve mass transport and electron transport in catalytic processes (due to Lorentz forces, Kelvin forces, magnetohydrodynamic [MHD], and micro‐MHD); the magnetothermal effect may raise the reaction temperature and boost electrocatalytic activity. This review focuses on the rational design of catalytic systems incorporating the interaction between catalysts and magnetic fields, aiming to produce enhanced catalytic effects. The recommendations for further utilization of strategies for electrocatalysis and broader energy technologies for magnetic fields, as well as potential challenges for future research, are also discussed.

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A novel strategy for hierarchical structure in multicomponent nano-precipitated steels by high magnetic field aging

Cited by 17 publications

References 34 publications

Magnetic Field‐Assisted Construction and Enhancement of Electrocatalysts

Magnetic Field‐Assisted Construction and Enhancement of Electrocatalysts

Precipitation of α-Fe from Fe84−xSi4B12+x (x = 1, 3) Amorphous Alloys Under High Magnetic Field Annealing

Magnetic field‐assisted electrocatalysis: Mechanisms and design strategies

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