45,519 Results Found

For the purpose of determining the interaction parameters between Mn and Al, and the influence of Mn on Al₂O₃ inclusions formation in the Fe-Mn-Al-O melts with high Mn and Al contents, three groups of Fe-Mn-Al-O melts with the initial Al content of 3...

The paper describes an investigation of Al₂O₃ samples and NiAl–Al₂O₃ composites consolidated by pulse plasma sintering (PPS). In the experiment, several methods were used to determine the properties and microstructure of the raw Al₂O₃ powder, NiAl–Al...

Amyotrophic lateral sclerosis (ALS) is a terminal neurodegenerative disease, marked by considerable clinical and molecular heterogeneity. While several genetic drivers have been linked to familial ALS (fALS), the biology of sporadic ALS (sALS)—...

Low-pressure cold-spray (LPCS) aluminum is widely used for coating depositions in various engineering applications but is limited by its low hardness and poor wear resistance. To improve these properties, ceramic particles are added to form metallic...

This article examines the relation between the disciplines of theology (kalām) and Sufism (taṣawwuf) in the works of the North African Ashʿarī theologian Muḥammad b. Yūsuf al-Sanūsī (d. 895/1490) with a focus...

Over the past half-century, the study of Islam in the Muslim world has been preoccupied with three global projects: maqāṣid al-sharīᶜa (the higher objectives of revealed law), al-wasaṭiyya al-islāmiyya (Islamic modera...

In this study, an Al₂O₃3D/5083 Al composite was fabricated by infiltrating a molten 5083 Al alloy into a three-dimensional alumina reticulated porosity ceramics skeleton preform (Al₂O₃3D) using a pressureless infiltration method. The corrosion resist...

Owing to the combined advantages of Al-Si alloy and Al₂O₃, Al-Si@Al₂O₃ is widely utilized as a heat storage material, catalyst carrier, and water adsorption host. Hence, the preparation of Al-Si@Al₂O₃ and corresponding precursors is of utmost signifi...

The high chemical activity, low thermal conductivity, and high strength of titanium alloys lead to severe tool wear during cutting. The coating applied to the tool surface insulates the effect of heat and chemical reactions. TiAlSiN coating and AlCrN...

This work aimed to characterize Al₂O₃ matrix composites fabricated by the slip casting method using NiAl-Al₂O₃ composite powder as the initial powder. The composite powder, consisting of NiAl + 30 wt.% Al₂O₃, was obtained by mechanical alloying of Al...

Al-5Ti-0.62C-0.2Ce master alloy was synthesized by a method of thermal explosion reaction in pure molten aluminum and used to modify commercial pure Al and hypoeutectic Al-8Si alloy. The microstructure and tensile properties of commercial pure Al and...

In this work, Al(OH)₃ nanosheets are synthesized in situ on the surface of an Al-20Si alloy via the water bath method, and Al–20Si@Al₂O₃ composites are then obtained after calcination. The growth mechanism of the Al(OH)₃ nanosheets is revealed,...

Titanium alloys have been widely used in aerospace engineering due to their excellent mechanical properties, especially their strength-to-weight ratio. In addition, Ti6Al4V (TC4) alloy is the most widely used among α+β alloys. The main three elements...

Physical vapor deposition (PVD) coatings could affect the friction performance at the contact interface between Ti₂AlNb alloy parts and tool couples. Suitable coating types could improve the friction properties of Ti₂AlNb alloy while in contact with...

A successful application of a hot dip coating process that coats aluminum (Al) on aluminum nitride (AlN) ceramics, revealed that Al had a perfect wettability to the ceramics under specific circumstances, which was different from previous reports. In...

NiAl-Al₂O₃ composites, fabricated from the prepared composite powders by mechanical alloying and then consolidated by pulse plasma sintering, were presented. The use of nanometric alumina powder for reinforcement of a synthetized intermetallic matrix...

This work is dedicated to the growth process and investigation of luminescent and scintillation properties of CeAlO₃ single crystals and CeAlO₃/CeAl₁₁O₁₈ metamaterials under e-beam and α-particles excitation. It has been shown that cathodolumin...

In this work, Al₂O₃-AlN composite ceramics with high bending strength and thermal conductivity were fabricated by Digital Light Processing (DLP). The influence of AlN content on the rheological and cure behavior of Al₂O₃-AlN suspensions, as well as t...

This study explores the Qurʾānic portrayal of al-ḥūr al-ʿīn in relation to pre-Islamic poetic traditions, with a particular focus on Imruʾ al-Qays’s Muʿallaqa—a foundational text in Arabic love poe...

Vacuum induction melting is a commonly used method for preparing AlV55 alloys. However, this method results in high Al evaporation losses, leading to poor cost control. Moreover, the influence of the process parameters on the alloy composition remain...

This paper presents a magnetron sputtering Al/Cu bilayer film solder to realize the brazing of AlN ceramic and Al metal. The effect of different temperatures on the structure and mechanical properties of brazed joints is studied. The results show tha...

TiAl alloys are used in high-temperature components such as the turbine blades of aeroengines because of their excellent properties. However, TiAl alloys are prone to thermal corrosion when in near-ocean service. In order to solve this problem, a hot...

In this paper, I analyze the account of miracles given by ʿAbd al-Karīm al-Jīlī (d. 811/1408), one of the major interpreters of the Sufi metaphysics of Ibn ʿArabī (d. 638/1240). Al-Jīlī outlines his theory of m...

Zn-Al alloy with the addition of Al (5–25 wt.%) was fabricated into as–cast and rod–shaped alloys. SEM/EDS and XRD technology were used to examine the impacts of the Al–element content on the alloys’ microstructure, mech...

Al–Co alloys of various Co contents (2–20 wt.% Co) were fabricated by vacuum arc melting (VAM) with the scope to investigate the influence of cobalt on the microstructure and corrosion resistance of Al in 1 M H₂SO₄. The obtained microstru...

In this work, interfacial microstructure in W/2024Al composite and inhibition of the W-Al direct reaction by CeO₂ doping were investigated. The composites were prepared through powder sintering, and after preparation the composites were treated by an...

Three series of binary, FeTi (Ti-rich), FeAl and TiAl (Al-rich) alloy samples were produced in an argon arc furnace. An annealing treatment of 72 h at 1000 °C was applied to the samples, giving rise to different equilibrium microstructures depend...

The vacuum brazing of dissimilar Al 7075 and Al–25 Si alloy was investigated. The brazing filler was copper foil with a thickness of 20 μm, and the brazing temperature was 560 °C held for 10 min. The average shear strength of the brazed...

A new method, powder thixoforming, has been proposed to fabricate an in situ Al₃Ti_p/2024Al composite. During partial remelting, the microstructural evolution of the bulk alloy prepared by cold pressing of the Ti, Al, 2024Al powder mixture was investi...

Aluminum (Al) toxicity is one of the major constraints to agricultural production in acid soils. Molecular mechanisms of coping with Al toxicity have now been investigated in a range of plant species. Two main mechanisms of Al tolerance in plants are...

A selective liquation process to extract Al from a coarse Al–Si alloy, produced by carbothermal reduction, was investigated on the laboratory scale. The products obtained by selective liquation–vacuum distillation were analyzed by X-ray diffraction,...

In order to obtain the chemical reaction mechanism of Al-rich Al/PTFE/TiH₂ composites in argon and oxygen atmosphere, Al/PTFE, PTFE/TiH₂, Al/TiH₂ and Al-rich Al/PTFE/TiH₂ with different contents of TiH₂ composites were prepared by using the wet mixin...

This article reconstructs Fakhr al-Dīn al-Rāzī’s (d. 1210) systematic treatment of the jinn in his Great Exegesis (al-Tafsīr al-Kabīr) and his summa The Sublime Objectives in Metaphysics (al-Maṭālib al-ʿ...

Elements’ diffusion between Ti-6Al-4V alloy and Al in the process of sliding was investigated from 400 °C to 600 °C. The results showed that the atoms were diffused at the Ti-6Al-4V/Al interface. When sliding at 400 °C and 500 °C, no intermetallic co...

The effects of different aluminum species on malate dehydrogenase (MDH) activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT) modified glass c...

Aluminum dross (AD) is a hazardous waste that contains valuable metallic Al and reactive aluminum nitride (AlN). The intergrowth of Al and AlN presents a challenge to Al recovery and AlN removal. In the current work, a mechanical milling method was d...

A multilayer structure and incorporation of the fourth element are promising strategies to improve the properties of TiAlN coatings. In this study, the structural, mechanical, and thermal properties of the Ti_0.34Al_0.48Ta_0.18N/Ti_0.42Al_0.54B_0.04N multi...

This study was carried out to observe and measure the microstructure, distance between dendrite arms, aspect ratio, and Knoop hardness change of extruded material formed by the hydro co-extrusion of Al3003/Al4004 clad material manufactured by the duo...

This paper compares the metal/semiconductor barrier height properties of non-recessed Ti/Al/Ti and Ta/Al/Ta contacts on AlGaN/GaN heterostructures. Both contacts exhibited a rectifying behavior after deposition and after annealing at temperatures up...

The grain size plays a pivotal role in determining the properties of the alloy. The grain size can be significantly decreased by adding inoculants. Aiming to address the shortcomings of existing inoculants, the Al₃Ti-Al₂O₃/Al inoculant was successful...

This study investigates the effect of the mass ratio of aluminum to aluminum oxide on the structure and properties of Al–Al₂O₃ composite coatings deposited by cold spray deposition onto AISI 316L stainless steel substrates. Powder mixtures cont...

Piezoelectric aluminum nitride (AlN) thin film, as a commonly used material for high-frequency acoustic resonators, has been a research hotspot in the RF field. Doping Sc elements in AlN is one of most effective methods to improve the piezoelectricit...

In this study, in situ Al₂O₃-reinforced Ti₃Al composite was fabricated after 8 h of milling and sintering at 850 °C. A mixture of TiO₂ and Al powders were mechanically milled in a planetary mill, cold-compacted and sintered under a protected argon at...

To solve the problem of easy delamination of the interface of Al/CFRP/Al laminate (CFRP, carbon fiber composite; Al, aluminum), a method of constructing high strength and toughness at the interface is proposed. The effects of adding resin and carbon...

In this study, SHS was used to produce metal-intermetallic-ceramic laminate AlMg6-NiAl-TiC composite. The experiment conducted without a cylindrical powder pellet holder produced no joint between the NiAl and AlMg6 sheet. On the other hand, the exper...

Intermetallic compounds formed during heat treatment of alloy coatings affect the coating structure and properties. In order to determine the phase changes and coating performance, FeCrAl (Fe Bal., Cr 26 wt.%, Al 6 wt.%) and Al (99.9 wt.%) coating wa...

xAl₃Zr/Al-5Cu-0.6Mn-0.15Ti composites were fabricated via an in situ reaction method, and the influence of Al₃Zr content on the microstructure and mechanical properties in both as-cast and T6-treated conditions was systematically investigated. The re...

This research article aims to improve the specific capacitance of DC-etched Al foil for Al electrolytic capacitors by forming an Al₂O₃-TiO₂ composite anodic oxide film. DC-etched Al foils for aluminum electrolytic capacitors were immersed in a TiO₂ p...

The formation of intermediate phases during aging of the reaction gel composition 1.0Al₂O₃•1.0P₂O₅•1.5DPA•40H₂O and its subsequent crystallization into molecular sieves AlPO-11 and AlPO-41 was studied in this work. The initial gels and...

Aluminum volatilization during laser deposition manufacturing severely deteriorates the microstructure and service performance of TiAl alloys, causing aggravated brittleness, elevated crack sensitivity and structural degradation. To tackle this issue...