Aluminum - Science topic

This study investigates the influence of Zinc (Zn) coating on the mechanical properties of impact spot welded joints between Aluminum (Al) 6111 alloy and galvanized high-strength low-alloy (HSLA) 340 steel using vaporizing foil actuator welding (VFAW). The Zn coating significantly impacts the weld interface, leading to a heterogeneous structure wit...

The objective of the work described in this paper is the development of a novel wall-embedded micro heat pump (WEMHP) that is packaged and easy to install for retrofit and new building applications. A successful product could be a more efficient approach to providing local comfort and could contribute to reducing heating and cooling energy consumpt...

The spallation behavior of polycrystalline Al with helium (He) bubbles (poly Al–He) under unsupported shock loadings at a wide range of impact velocities was investigated via molecular dynamics simulations. We found that the microstructural features during shock compression and release processes for the poly Al–He are highly analogous to those obse...

It is still difficult to precisely quantify and predict the effects of drying–rewetting cycles (DWCs) on soil carbon dioxide (CO2) release due to the paucity of studies using constant moisture conditions equivalent to the mean water content during DWC incubation. The present study was performed to evaluate overall trends in the effects of DWCs on C...

Stability of flexible perovskite solar cell (PSC) modules have been investigated in heat test and damp-heat test (DH-test) conditions. Heat-tests were performed at 85, 95, and 105 • C, while DH-test were at 85 • C/85 % relative humidity (RH), 95 • C/85%RH, and 99 • C/85%RH. For this purpose, the devices with a standard structure of "polyethylene te...

Currently, MoAlB particles are produced at 1000°C and higher temperatures. In this manuscript, we report the rapid synthesis of MoAlB by altering the stress of Al particles to affect Al reactivity. The Al particles were purposefully stress‐altered to reduce their threshold for reaction. The stress‐altering process consisted of annealing followed by...

Carbon fiber-reinforced aluminum laminate (CARALL) is a composite material made of carbon fiber-reinforced plastics (CFRP) and aluminum plates bonded by adhesive. It is widely used in the aerospace industry because of its high strength. In this study, the damage characteristics of carbon fiber-reinforced aluminum laminates under hypervelocity impac...

Laves phases are an interesting field of research when it comes to structural chemistry and physical properties. Investigations of the ternary system Zr–V−Al showed, in contrast to the system Hf–V−Al, that no superstructures can be observed within the solid solution Zr(V1–xAlx)2. High values of x form aluminum rich phases that adopt the hexagonal M...

To solve the problem of low segmentation model accuracy due to the complex shape of carbon slag in the aluminum electrolysis fire-eye image and the blurring of the boundary between the slag and the surrounding electrolyte, this paper proposes a segmentation model of the fire-eye image based on an improved U-Net. The model reduces the depth of the t...

The current research explores additive manufacturing of a multi-phase material using dual-wire plasma-directed energy deposition technology. With this approach, new materials can be designed and tested easily on the basis of commercially available consumables. In this work, AlSi5 and CuAl8 solid wire consumables are used to produce a specific AlCuS...

In every country on the globe, there are still actions to perform in order to improve buildings' energy efficiency, particularly in regions with severe weather conditions. Since walls are heat-dissipating elements in the building, designing them effectively can help reduce the energy consumption of the HVAC (heating, ventilation, and air-conditioni...

Current collectors are key components of lithium-ion batteries, providing conductive pathways and maintaining interfacial stability with the electrode materials. Conventional metal-based current collectors, such as aluminum and copper, exhibit excellent conductivity and mechanical strength. However, they have considerable limitations, including ele...

Accumulated charges at the interfaces of organic light‐emitting diodes (OLEDs) often induce exciton quenching and lead to device degradation. This work delves into the correlations of the interface charge accumulation and degradation properties of tris(8‐quinolinolato)aluminum (Alq3)‐based OLEDs. The interface accumulated charge density is modified...

Drill bits are used in almost all industries for construction, exploration of oil and gases among others. But their operation and pace is invariably stultified by wear and friction thereby requiring frequent replacement and higher costs. This research examines the possibility of applying a high-performance material on the cutting surface of the dri...

Semiconductor‐superconductor hybrid materials are used as a platform to realize Andreev bound states, which hold great promise for quantum applications. These states require transparent interfaces between the semiconductor and superconductor, which are typically realized by in‐situ deposition of an Al superconducting layer. Here a hybrid material i...

In the developing country like India construction work plays an important role to increase the economy of the country. Also with the growing population urbanization is being the need of time. A good construction project has to focus on saving both time and money without losing the quality of work. One of the factor influencing the project time and...

Cooling small components is becoming an attractive topic for researchers. In this paper, an attempt is made to use an ethylene glycol/water mixture as a cooling liquid. This liquid is a helpful application for when the fluid is in a harsh environment and should not freeze. The experiment uses an ethylene glycol/water mixture circulating through a t...

The laser ablation pressure is often estimated by an exponential scaling law, which is determined by integral averaging of 1–2 ns short pulses. Here, we report a direct, continuous measurement of ablation pressure of a 3– 10 ns ramp 351- nm laser pulse. Aluminum is deposited on LiF window, ablation pressure is inferred from the particle velocity of...

In this study, liquid jet impingement through porous metal foam-filled cooling channels with uniform cross sections and subject to a high heat flux value of 10⁵ W/m² is investigated numerically and several effective parameters are studied to achieve highly effective thermal control designs. The studied metal foam substrates are porous structures ma...

Processing of hybrid materials is particularly challenging due to the different physical properties and requires extensive knowledge to produce defect‐free components. When serially combining steel and aluminum through rotary friction welding and subsequent cup backward extrusion in Tailored Forming, the strongly different yield stresses are a deci...

Titanium (Ti) alloys can be thoroughly improved by introducing aluminum (Al) as an $$\alpha$$ α -phase stabilizer and tungsten (W) as a $$\beta$$ β -phase stabilizer as well as iron (Fe) for enhancing the strength and the creep resistance. In the current study, Ti–5Al–4W–2Fe alloy was especially synthesized to meet the essential requirements of the...

Grid-reinforced metal matrix composites featuring tailorable mechanical properties pose significant challenges to additive manufacturing due to its co-controlling reinforcement structure and interfacial formation issues. Here, a dense steel grid-reinforced aluminum matrix composite was successfully prepared by wire-based friction stir additive manu...

Strong light-matter coupling has garnered significant attention for its potential to optimize optoelectronic responses. In this study, we designed open cavities featuring non-local metasurfaces composed of aluminum nanoparticle arrays. The surface lattice resonances in these metasurfaces exhibit electronic strong coupling with the boron difluoride...

Sandwich structures composed of top and bottom face sheets and an inner core are commonly used for energy-absorbing applications, mainly because of their superior stiffness-to-weight ratio and crashworthiness. Despite extensive studies on the ballistic behavior of monolithic and composite materials, limited research has focused on hybrid sandwich s...

Maintaining clean surfaces on solar panels is critical for maximizing energy efficiency, particularly in regions with high dust accumulation. Conventional cleaning methods, which often rely heavily on water, pose significant sustainability challenges, especially in water-scarce environments. This paper introduces an innovative self-cleaning solutio...

Incorporating multi-layer bimetallic plasmonic nano-ring structures into amorphous silicon solar cells can effectively enhance the optical current by manipulating light absorption and trapping. Improving the photocurrent density in amorphous silicon (a-Si) solar cells is essential for enhancing their efficiency and competitiveness in thin-film phot...

This study reports a new meta-stable structure in epitaxial nickel-aluminum (Ni-Al) films (Al content up to 24.4 at.%) grown on MgO(001) substrates by magnetron sputtering. Structure probes by XRD, HRTEM and nano-indentation combined with atomistic simulations consistently demonstrate that in thin film samples with coexisting {\gamma} and {\gamma}'...

The early stage of the impact-initiated reaction of supersonic cylindrical reactive metal projectiles (magnesium, aluminum, titanium, and zirconium) with an inert aluminum oxide target is investigated experimentally with impact velocities from 1.1 to 1.3 km/s. A three-color imaging pyrometer is used to obtain temperature maps of the condensed fragm...

Transient thermoreflectance (TTR) signal generated from delaminated films of Al, TiN and ZnO upon incidence of nanosecond pulsed laser beam and creation of oscillations is used to investigate the damping mechanism. The thermal and acoustic components of the TTR signal are evaluated and the decay in the acoustic component with time is related to the...

Optical clocks require an ultra-stable laser to probe and precisely measure the frequency of the narrow-linewidth clock transition. We introduce a portable ultraviolet (UV) laser system for use in an aluminum quantum logic clock, demonstrating a fractional frequency instability of approximately mod σy = 2 × 10⁻¹⁶. The system is based on an ultra-st...

Anticounterfeiting technologies have become increasingly crucial due to the growing issue of counterfeit goods, particularly in high‐value industries. Traditional methods such as barcodes and holograms are prone to replication, prompting the need for advanced, cost‐effective, and efficient solutions. In this work, a practical application of anodic...

Geoeconomic and geopolitic instability increases risks for the export led strategy, pursued by Russian companies, including for the production of aluminum, both primary and unprocessed alumina. Despite the high global demand on aluminum in various industries, its world prices are declining, which creates problems for its producers, who are faced wi...

In the frame of this work, we report a profound insight into the thermal conductivity (k) of aluminum nitride (AlN) thin films deposited on AlN-molecular beam epitaxy (MBE)/Si(111) and AlN-Kyma/Si(111) substrates at low temperatures (<200 °C) using reactive direct current magnetron sputtering (DCMS). Our concern is not on the thermal properties at...

This study investigates the effect of calcined clays (metakaolin, metasilt, metaclay) on the chemical composition, distribution, and structure of alkali–silica reaction (ASR) gels. Using 10 wt% of calcined clays reduced concrete expansion and minimized cracking but did not inhibit ASR gel formation. Micro X-ray fluorescence mapping revealed an aver...

The high-pressure die-casting process is growing since it is a cost-effective solution in the production of lightweight parts for a variety of industries. Nevertheless, the harsh working conditions of the die lead to premature failing and poor quality of the produced parts. Lubricants are applied to cooling the die surface and create a protective f...

Due to its sustainable approach, biomass is the subject of much research focused on the synthesis of multifunctional materials including electrodes for batteries and supercapacitors. In this work, sawdust from the processing of birch logs was used to produce a highly porous carbon material (CBW) that is employed for the construction of electrodes f...

Objective: The objective is to present a new method to explore BFGS where a new decision-making flow was added in order to optimize and computationally improve the performance of the Genetic Algorithm, controlling the value of the gradient as it evolves. Theoretical Framework: In the literature, the work presented by [Chen, 2014] stands out, who pr...

The food industry's evolution has witnessed a significant shift in consumer preferences and regulatory approaches towards food additives. The mid-20th century was characterized by the prevalent use of food additives, frequently without thorough examination. In contrast, contemporary trends prioritize "clean labels" that highlight descriptors such a...

Purpose To evaluate image quality (IQ) of for‐processing (raw) and for‐presentation (clinical) radiography images, under different exposure conditions and digital image post‐processing algorithms, using a phantom that enables multiple detection tasks. Methods A modified version of the radiography phantom described in the IAEA Human Health Series N...

The developments in the automotive and aerospace sectors require alternative structures to metals for diverse applications; therefore, lightweight polymer–metal hybrid composites with outstanding mechanical characteristics are synthesized. Herein, the modern nanoperfusion technology, which involves the in situ growth of 3D porous cobalt oxide nanof...

This study investigates cooling characteristics of electronic components integrated to a way-shaped canopy swayed by the forced convective air flow. Aluminum foam that is extremely conductive is used to cover the heat-generating component. The numerical framework developed in this endeavor takes into account the impact of conjugate transport of hea...

Nanostructure-based electrochemical sensors demonstrate a remarkable development in sensing technology, offering unparalleled speed, sensitivity, and selectivity. Therefore, the potential application of pure, aluminum, and gallium-doped BN nanoclusters (B24N24, AlB23N24, and GaB23N24) as novel sensors was investigated to detect deferiprone (DEF). I...

The workers at construction and agricultural sites face many problems regarding load carrying (body pains), which results in less work efficiency. Therefore, the idea of designing a toolkit is put forward, with the help of which the workers could do their work easily and efficiently. This study aims to design and fabricate a low-cost toolkit that i...

Orthorhombic Al3BO6 was synthesized in a Walker-type multianvil apparatus under high-pressure/high-temperature conditions of 5 GPa and 1,200 °C, respectively. Its structure has been determined via single-crystal diffraction and is isotypic to M 3BO6 (M = Cr, Fe) and homeotypic to the natural mineral norbergite (Mg3SiO4(OH)2). Thereby, we could comp...

The paper at hand presents an in-depth investigation into the fatigue behavior of the high-strength aluminum alloy EN AW-7020 T6 using both experimental and numerical approaches. Two types of specimens are investigated: a dog-bone specimen subjected to cyclic loading in a symmetric strain-controlled regime, and a compact tension specimen subjected...

The present paper aims to identify the commitment of industrial companies to disclose environmental costs through a case study of the Bahrain Aluminum Company (Alba), explore the relationship between the environmental cost and the efficiency of applying the environment disclosure, and to remove the obstacles preventing its application. The study pr...

Aluminum alloys are difficult to weld using traditional fusion welding methods. Friction stir welding (FSW) offers a potential alternative to typical fusion welding methods for generating high-quality aluminum connections. Welding process factors significantly impact joint quality. This manuscript proposes a Double Attention Convolutional Neural Ne...

The article investigates the mechanisms responsible for aluminum phosphate glass matrix (APM) leaching and quantifies the corresponding release of radionuclides beyond the system of engineered barriers of the deep geological repository (DGR) for radioactive waste. The paper considers a bentonite clay-based material as a buffer material. The leachin...

This work introduces a physics‐based model and detailed examination of how efficient VO2‐based, metasurface thermally‐adaptive radiative coatings (TARCs) can be designed through careful selection of the dielectric spacer material and thickness as well as tailoring of the tungsten‐doped vanadium dioxide (WxV1‐xO2 where x = 0 and 0.015) patch dimensi...

This paper presents the design, simulation, and investigation of a fundamental structure for capacitive MEMS switches in a shunt configuration. The main objective is to select materials that achieve low actuation voltage while maintaining RF and dynamic performance, especially for mm-wave applications. The proposed design consists of a Fixed-Fixed...

The synthesis of a Cu/Fe-acid-based geopolymer (CFASP) involved the combination of Metakaolin, CuO, and Fe filings with diluted phosphoric acid. X-ray diffraction (XRD) analysis unveiled the presence of two crystalline phases within the geopolymer matrix at room temperature: the pyrophyllite-2M1 type structure and (Cu, Fe)3(PO4)2. Upon heating to 4...

The scattering of reinforcement plays a crucial role in the microstructure and properties of metal matrix composites. In this study, an aluminum matrix composite (AMC) was reinforced by 10 wt% TiO2 (Al-10TiO2), with an average particle size of a submicron, combined with a different content of graphitic carbon nitride (g-C3N4), which was fabricated...

Understanding the impact of the aluminum zinc oxide (AZO) seed layer thickness on zinc oxide nanowires (ZnO NWs) growth is decisive in attaining high‐quality NWs with higher transparency and without cracking issues when using flexible substrates, especially for optoelectronic applications. Therefore, herein, ZnO NWs have been grown on various thick...

The development of corrosion mechanisms is a major issue that industrial experts are faced with while dealing with all phases of metal exploitation. Damage caused by corrosion affects the increase in both direct and indirect costs of manufacture. With adequate surface protection technology, it is possible to lessen the intensity of corrosion mechan...

Due to absence of C-S-H gel, chemically activated mixed Al-rich steel slag often shows low early-age strength. This work proposes a novel method to accelerate the hydration of Al-rich steel slag by dipotassium hydrogen phosphate (DHP) activation. Results reveal that DHP significantly promotes the formation of layered double hydroxides (LDHs) by inc...

Ni0.5Zn0.5AlxFe2-xO4 (x = 0.00 to 0.50 in increments of 0.05) was prepared by the auto combustion sol-gel method, and the resulting nanopowder was subjected to calcination at three temperatures: 400, 600, and 800 °C. The structure of ferrite was characterized by XRD, and it was found that all the prepared Ni-Zn samples possess a single-phase cubic...

This study presents a comprehensive structural performance analysis of a honeycomb-core substrate under normal pressure, highlighting the superior predictive accuracy of Artificial Neural Networks (ANNs) over Response Surface Methodology (RSM). The analysis focused on critical design parameters, such as material selection, coverage rate, and wall t...

A relaxed eddy accumulation (REA) system was developed and tested that enables conditional sampling of air for subsequent 14CO2 analysis. It allows an observation-based partitioning of total CO2 fluxes measured in urban environments by eddy covariance into fossil and non-fossil components. The purpose of this article is to describe the REA system,...