Study on the mechanism of influence of different overlap rate on the remelting and recrystallization behavior of the front first cladding layer

Applied Physics A, Journal Year: 2025, Volume and Issue: 131(5)

Published: April 13, 2025

Language: Английский

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Metallic Dendrites: How Far Can We Go?

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Metallic dendrites, novel hierarchical nanostructures with a distinctive fern- or tree-like appearance, introduce new era in sensing and wearable technologies. They possess several properties, including high surface area, crystal defects, grain boundaries, edge sites, all of which contribute to an increased number catalytic sites for platforms, as well functionalization antibodies drug molecules' adhesion. The aforementioned characteristics endow them superior conductivity enhanced activity, thereby facilitating improved mass charge transfer rates analytes platforms. Since their discovery, there has been substantial progress synthesis, nanoengineering composites, extensive analytical applications diverse domains, such sensor platforms wearables, fuel cells, supercapacitors, delivery. Although based on dendrites have performed over the past ten years, commercialization yet take place variety reasons, primarily being challenge achieve homogeneity large-scale synthesis due uncontrolled development. Besides this, other challenges include transitioning non-noble metals while still maintaining activity stability, sluggish metabolism vivo following delivery poor excretion by body, collectively hinder translation. This Perspective encompasses important breakthroughs metallic upon them, crucial knowledge gaps, bottlenecks eye towards future dendrite-based sensing, electronics,

Language: Английский

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Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs₂InBr₅(H₂O)

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(19), P. 2571 - 2576

Published: Jan. 1, 2024

The fractal patterns were obtained in lead-free zero-dimensional perovskite Cs 2 InBr 5 (H O).

Language: Английский

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Phase-Field Simulation and Dendrite Evolution Analysis of Solidification Process for Cu-W Alloy Contact Materials under Arc Ablation

Metals, Journal Year: 2024, Volume and Issue: 14(10), P. 1100 - 1100

Published: Sept. 25, 2024

Cu-W alloys are widely used in high-voltage circuit breaker contacts due to their high resistance arc ablation, but few studies have analyzed the microstructure of under ablation. This study applied a phase-field model based on developed by Karma and co-workers evolution dendrite growth solidification process alloy The columnar during was simulated, effect supercooling degree anisotropic strength morphology dendrites analyzed. results show that solid–liquid interface becomes unstable with release latent heat, competitive between occurs large amount solute discharge. In addition, when is 289 K, located at lower height only 15 μm, rate slow. At anisotropy, side branches more fully tertiary dendritic arms appear, leading decrease alloy’s relative density poorer ablation resistance. contrast, main supercooling, which improves material. this paper may provide novel way material property changes temperature for contacts.

Language: Английский

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Revealing the Effects of Pressure on the SDAS and Columnar Dendrite Growth Rate in 30Cr15Mo1N Ingot by Phase Field Method

Metallurgical and Materials Transactions B, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 18, 2024

Language: Английский

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Study on Mechanism of Microstructure Refinement by Ultrasonic Cavitation Effect

Coatings, Journal Year: 2024, Volume and Issue: 14(11), P. 1462 - 1462

Published: Nov. 17, 2024

During the solidification process of alloy, temperature lies in range between solid-phase line and liquidus. Dendrite growth exhibits high sensitivity to even slight fluctuations temperature, thereby significantly influencing tip rate. The increase can result a reduction rate growth, whereas decrease lead an augmentation In cases where there is significant rise dendrites may undergo fracture subsequent remelting. Within phenomenon ultrasonic cavitation, release internal energy caused by rupture cavitation bubbles induces substantial elevation causing both dendrite remelting phenomena. This serves as main mechanism behind microstructure refinement induced cavitation. Although exert influences on alloys, most studies primarily focus microscopic characterization experiments, which fail unveil transient evolution law governing processes. Numerical simulation offers effective approach address this gap. existing numerical models predicting process, while research phenomena remains relatively limited. Therefore, model was established incorporating phase field method (PFM) finite element difference (FDM) into temperature-induced modeling, enabling comprehensive investigation entire encompassing

Language: Английский

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Study on the macro-mesoscopic cross-scale influencing mechanism of the active element S on the solidification behavior during laser cladding

Applied Physics A, Journal Year: 2024, Volume and Issue: 131(1)

Published: Dec. 31, 2024

Language: Английский

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