Microstructure Evolution and Mechanical Properties of Ti-6Al-4V Alloy Fabricated by Directed Energy Deposition Assisted with Dual Ultrasonic Vibration

Materials Science and Engineering A, Год журнала: 2025, Номер unknown, С. 147934 - 147934

Опубликована: Янв. 1, 2025

Язык: Английский

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Novel cyclic ultrasound-assisted liquid phase exfoliation of graphene in deionized water: A parameter study

Materials Letters, Год журнала: 2023, Номер 337, С. 134011 - 134011

Опубликована: Фев. 6, 2023

Язык: Английский

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Liquid phase exfoliation of MoSe2: Effect of solvent on morphology, edge confinement, bandgap and number of layers study

MethodsX, Год журнала: 2023, Номер 11, С. 102409 - 102409

Опубликована: Сен. 28, 2023

In this study, a facile and scalable method for synthesizing MoSe2 nanomaterial via sonication-assisted liquid-phase exfoliation is proposed. This study shows the successful synthesis of few-layered in various solvents including DI water, ethanol, N-Methyl-2-pyrrolidone (NMP), Dimethylformamide (DMF) Dimethylsulfoxide (DMSO). The exfoliated nanosheets have remarkably different properties than bulk which were studied using Field emission scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction UV-Vis spectroscopy to investigate their morphology, functional groups, structure optical properties, respectively. mean values number layers from an extinction spectrum based on effect edge quantum confinement also calculated. Moreover, material has potential application energy storage as demonstrated by electrochemical performance materials.•Successful few-layer liquid phase solvents•The investigation solvent MoSe2.

Язык: Английский

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Understanding interfacial dynamics: Hydrostatic pressure-induced sono-dispersion of carbon nanotubes

Surfaces and Interfaces, Год журнала: 2024, Номер 51, С. 104740 - 104740

Опубликована: Июль 4, 2024

Homogeneously dispersing carbon nanotubes (CNTs) is crucial for minimizing agglomeration issues commonly encountered in commercially available CNTs samples, thereby enhancing their unique mechanical, electrical, thermal, and optical properties. In this study, we propose an alternative hydrostatic pressure-driven dispersion approach to effectively disperse assess the impact of pressure on deionized water (DIW). Our results demonstrate that ultrasonic treatment under a 0.1 MPa enables achievement high concentration multi-walled (MWCNTs) at approximately 4.23 mg/ml, significantly surpassing concentrations reported recent studies (∼1.9 mg/ml). Thin buckypaper generated from these solutions exhibit exceptional electrical conductivity (∼4938 S/m). Numerical modeling demonstrates shock wave induced by bubble implosion enhanced, reaching 80 pressure, markedly higher than atmospheric previous (∼1.6 MPa). This enhancement leads twofold improvement efficiency. For first time, reveal underlying mechanism nanobubbles (NBs) stability. experimental show significant increase generation NBs resulting collapse pressure. phenomenon plays role long-term stabilization dispersion, which observed over several months. The presence negatively charged hydroxyl groups interface identified as key factor process. presented essential large-scale other nanomaterials.

Язык: Английский

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Nanobubble-assisted liquid phase exfoliation of graphene in deionized water

Materials Letters, Год журнала: 2024, Номер 364, С. 136372 - 136372

Опубликована: Март 26, 2024

Язык: Английский

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Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging

Ultrasonics Sonochemistry, Год журнала: 2023, Номер 101, С. 106715 - 106715

Опубликована: Дек. 1, 2023

Hydrodynamic cavitation is useful in many processing applications, for example, chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic that occurs a Venturi tube vortex known to cause luminescence whose intensity closely related the size number events. However, mechanistic origins bubbles constituting remains unclear, although it has been concluded pressure fields generated by collapse strongly depends on bubble geometry. The common view consists numerous small spherical bubbles. In present paper, aspects arising were visualized using high-speed X-ray imaging at SPring-8 European XFEL. It was discovered consisted angulated rather than tangential velocity surface assessed considering Rankine model.

Язык: Английский

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Ultrasonic Melt Processing: Progress, Applications, and Future Directions

Materials, Год журнала: 2025, Номер 18(3), С. 522 - 522

Опубликована: Янв. 23, 2025

Ultrasonic melt processing (UMP) has garnered significant attention from both academic and industrial communities as a promising solution to critical challenges in the metal casting industry. This technique offers clean, environmentally friendly, energy-efficient approach improving quality achieving structural refinement. However, due opaque nature of metals, understanding fundamental mechanisms governing interactions among ultrasonic bubbles, acoustic streaming, remains still challenging. review traces evolution UMP research, its inception mid-20th century recent advancements, with particular emphasis on application state-of-the-art synchrotron X-ray imaging computational modeling. These approaches have been instrumental unraveling complex, multiscale dynamics occurring across temporal spatial scales. Key findings various metallic alloy systems are critically reviewed, focusing new insights into cavitation growing solid phases different alloys. Additionally, discusses resulting phenomena, including grain refinement, fragmentation, mitigation solidification defects, detail. The concludes by identifying research gaps emerging trends, underscoring indispensable role situ studies robust theoretical frameworks advancing UMP. developments poised reshape future innovation materials science engineering.

Язык: Английский

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Relationship of grain size to the physicochemical properties and osteogenesis in magnesium–zinc–calcium alloys for bone implants

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Язык: Английский

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Effect of intensification casting pressure on microstructure and mechanical properties of high pressure die casting AE81 magnesium alloy

Journal of Materials Research and Technology, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

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Modeling of a High-Frequency Ultrasonic Wave in the Ultrasonic-Assisted Absorption System (UAAS) Using a Computational Fluid Dynamics (CFD) Approach

Processes, Год журнала: 2025, Номер 13(6), С. 1737 - 1737

Опубликована: Июнь 1, 2025

The propagation of high-frequency ultrasound waves will generate both physical and chemical effects as they propagate through a liquid medium, such acoustic streaming, an fountain, atomization. These phenomena are believed to be the main factors that contribute enhancement mass transfer in gas–liquid carbon dioxide (CO2) absorption system. Computational Fluid Dynamic (CFD) simulation is one powerful tools can used model complex hydrodynamic behavior induced by medium. In this study, ultrasonic irradiation forces were simulated via momentum source term method using commercial CFD software (ANSYS Fluent V19.1). addition, parametric study was conducted investigate influences absorber height power on mixing performance. results indicated enhanced higher intensification factor achieved with increased fountain flow velocity, particularly at lowest highest power. Conversely, energy efficiency improved increase decrease To determine optimal combination power, trade-off between ultrasonic-assisted system (UAAS) crucial consideration during process scale-up.

Язык: Английский

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