Articles tagged with Alloys
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Researchers designed a nanodendrite Pt-Cu alloy electrocatalyst with high-index surfaces and graded composition, achieving excellent mass and area activities for oxygen reduction reaction. The catalyst's unique morphology and composition provide a high specific surface area to improve Pt utilization and enhance ORR activity.
Researchers developed an AI model that predicts crystal structures of multi-element alloys without requiring massive data. The method showed high accuracy in predicting structural phase and can save calculation cost by up to 1,000 times compared to previous methods.
Scientists have developed a new generation of thermomagnetic generators that can convert waste heat into electrical power at small temperature differences. The devices, based on Heusler alloy films, increased electrical power per footprint by a factor of 3.4 and reached a maximum power of 50 microwatts per square centimeter.
Researchers from Japan Advanced Institute of Science and Technology have successfully created 2D Si-Ge alloys with adjustable electronic properties. By adjusting the composition of these materials, they can fine-tune their band structure to suit various applications, opening doors for new electronics innovations.
Researchers have discovered a new mechanism that can increase the strength and toughness of high entropy alloys, enabling applications in transportation, energy, and defense industries. The discovery opens doors to lighter, safer, and more energy-efficient materials.
Scientists have identified diverse types of patterns on the surface of solidified metal alloys, including stripes, curved fibers, and dot arrays. These findings challenge existing understanding of liquid metal alloys and their phase transition processes.
Computational materials scientists at Ames Laboratory have created an algorithm that uses a hybrid approach inspired by cuckoo birds' nesting habits to find novel high-entropy alloys. The new method significantly reduces the search time for these materials, which are highly sought after for their unique properties and applications.
Researchers at Oregon State University have developed a battery anode based on a new nanostructured alloy that can improve energy storage and replace solvents with seawater. The zinc- and manganese-based alloy suppresses dendrite formation, demonstrating super-high stability over thousands of cycles.
Researchers from University of Illinois Chicago and Argonne National Laboratory developed alloy nanoparticles with high entropy, showing exceptional stability and durability during chemical reactions. These findings have potential applications in energy storage and conversion technologies, such as fuel cells and solar cells.
Researchers at the University of Jena have developed a light-emitting silicon alloy, paving the way for silicon lasers that could revolutionize optical data processing. The alloy's unique crystal structure enhances the probability of efficient photon emission.
Researchers developed a new class of high-strength, defect-resistant superalloys that can be 3D-printed with minimal material waste. The nickel-based alloys overcome cracking issues in traditional AM processes, making them suitable for complex one-off components in extreme environments.
Researchers developed a highly efficient and long-lasting electrocatalyst for water oxidation using cobalt, iron, and ruthenium. The single atomic alloy catalyst's surface oxygen adsorption stabilizes the catalytic intermediate, increasing overall efficiency.
A research team at Pohang University of Science & Technology developed a technique for predicting the phase and properties of high-entropy alloys using AI. The technique, which uses deep learning, improves the accuracy of phase prediction and provides guidance on key design parameters.
Researchers at NUST MISIS have developed a unique method to process bulk metallic glasses, improving their quality and properties. The new method increases tensile plasticity up to 1.5% and hardness by 25%, expanding the scope of application for these materials.
Researchers developed a machine learning technique that rapidly discovered rules governing catalysts, which took humans years of difficult calculations to reveal. The team believes this will enable faster progress in designing materials for various purposes.
A team of scientists successfully fabricated a giant magnetoresistive device comprising single-crystal Heusler alloys on a practical silicon substrate. The device performs comparably to the one grown on a heat-resistant MgO substrate, overcoming challenges in high-performance magnetoresistive devices.
Researchers have developed a magnesium alloy that can be used to treat tumors using a low-intensity magnetic field. The alloy, known as MgA, can rapidly heat up under the influence of an alternating magnetic field (AMF), resulting in effective tumor ablation.
Researchers at the University of Michigan discovered a new class of semiconducting materials stabilized by entropy. These materials, such as GeSnPbSSeTe high-entropy chalcogenide alloys, exhibit ambipolar doping, ultralow thermal conductivity, and a wide range of functional properties.
A novel method to grow multi-layered, single-crystalline graphene with a selected stacking order in a wafer scale has been developed. The researchers used Cu-Si alloy formation to control the number of graphene layers, allowing for uniform large-area single-crystalline layer-tunable multilayer graphene growth.
Researchers have discovered a way to resolve the conflict between high strength and ductility in intermetallic alloys by introducing disordered nanoscale layers at grain boundaries. These nanolayers improve the alloy's strength with excellent thermal stability at high temperatures, opening up new possibilities for designing structural ...
Lobachevsky University scientists have developed new ways to modify the structure of aluminium alloys, improving their performance. They used induction casting in vacuum and plastic deformation technologies to create homogeneous highly plastic structures that maintain high strength, thermal resistance, and electrical conductivity.
A new study by Cranfield University reveals that zinc alloys outperform aluminum and magnesium alloys in terms of sustainability and part lifespan. The research highlights the need for manufacturers to consider the environmental impact of their materials, even if cost is a consideration.
The new LiDAR receiver technology boasts long-wavelength sensitivity and ultra-low noise, promising improved performance and eye safety. The invention enables higher-power operation within the 2-micrometer window, considered eye-safe for night-vision imaging applications.
A team of scientists has created a technique using nanoneedles to modify the properties of iron-rhodium alloy, allowing for the creation of antiferromagnetic nano-islands embedded in ferromagnetic matrices. This breakthrough enables the miniaturization of magnetic devices and facilitates the manufacture of more robust and secure memories.
Researchers discovered molybdenum telluride (MoTe2) nanoflakes exhibit high activity and selectivity for H2O2 production in acidic media. The nanosheets show improved performance over state-of-the-art Pt-Hg and Pd-Hg alloys, with potential applications in decentralized H2O2 production.
Scientists have measured the velocity of seismic waves in iron-sulfur alloys thought to comprise Mars' core, providing crucial information about the planet's internal structure. This study simulates the Martian core's composition and origin, helping researchers compare observations with Martian space probes.
Researchers observe the atomic growth way of Pt3Ni-Ni(OH)2 core-shell structure at gas-liquid interface using in-situ liquid cell TEM. Experiment results reveal underlying growth and transformation mechanisms, shedding light on rational design of metal-2D core-shell structures.
A research team discovered that high-entropy alloys exhibit exceptional mechanical properties at ultra-low temperatures due to multiple deformation mechanisms. The study used in-situ neutron diffraction technique to reveal the sequence of deformation mechanisms, including dislocation slip, stacking faults, twinning, and serrations.
Monash University researchers improved aluminum alloy design by introducing specific crystal defects, enabling rapid nucleation of a strengthening phase. The study's findings have implications for lightweight alloys used in the aerospace industry.
Scientists have revealed that gallium melt lacks stable crystalline domains and molecule-like Ga2 dimers, offering a fresh perspective on melt formation processes. Experimental data from neutron diffraction provided critical evidence to support this finding.
Researchers developed a concept to understand correlations between element selection, theoretical properties, and measurable parameters. This enables quick identification of promising candidates and optimisation of element proportions.
Scientists have created an alloy that generates hydrogen on demand, enabling the use of portable fuel cells. The innovative method uses a gallium-indium-tin-bismuth alloy to produce hydrogen when combined with water and aluminum.
Researchers have found that alloy metal nanoparticles facilitate faster carbon nanotube growth by attracting more active metal atoms to the growth front. This leads to a larger carbon concentration and quicker addition of carbon atoms, preventing precursor accumulation around the nanoparticle.
Rickman was recognized for his contributions to computational materials science, including the development of computer simulation methodologies and material informatics. He is a pioneer in understanding high-entropy alloys and their unique thermal and mechanical properties.
Researchers at RMIT University have developed a new titanium-copper alloy that can be 3D printed with exceptional properties. The alloy's fully equiaxed grain structure reduces the risk of cracking or distortion, making it suitable for high-performance applications in medical devices and aerospace.
Researchers created an alloy of titanium, tantalum and scandium that functions for a long time even at high temperatures. By adding a few percent of scandium, the alloy avoids the unwanted omega phase, which was previously a major limitation in high-temperature shape memory alloys.
Researchers developed mass production technology for solid-solution alloy nanoparticles, which can be used as innovative catalysts for exhaust gas purification. The new technology achieved stable synthesis of 1nm-class nanoparticles at low temperatures, outperforming existing rhodium-based catalysts.
A team of scientists has developed a new method for creating high-powered magnets using a simple hydrogenation process. The resulting compound has anti-ferromagnetic properties, making it non-magnetic.
Researchers at the University of Copenhagen are establishing a new center to study catalysis on high-entropy alloys, aiming to develop sustainable chemistry alternatives. The project aims to identify materials capable of combining carbon and oxygen-containing molecules to produce valuable chemicals.
Researchers found that rapidly cooled copper-based shape memory alloys performed better than slowly cooled samples due to the formation of nickel-rich dots. This discovery could lead to more energy-efficient HVAC and refrigeration systems using heat pumping technology.
Worcester Polytechnic Institute (WPI) has received a $25 million award from the US Army Combat Capabilities Development Command Army Research Laboratory to advance 3D printing technology. The new technique, called cold spray, can repair metal parts or make new ones by layering metal powders in a process known as additive manufacturing.
Researchers at The University of Texas at San Antonio aim to improve the design of AM parts that are less susceptible to hydrogen embrittlement. They will study the effects of high pressures, elevated temperatures, and hydrogen atoms on the nickel-718 alloy material.
Researchers at Immanuel Kant Baltic Federal University have developed a new metallic alloy that can be used in magnetic refrigeration technology, offering an environmentally friendly alternative to traditional refrigerants like freon. The manganese-arsenic alloy shows promising results for solid-state cooling at room temperature.
Researchers at Pacific Northwest National Laboratory have developed a single-step manufacturing process to produce nanostructured rods and tubes directly from high-performance aluminum alloy powder. The process, called ShAPE, achieves significant improvements in product ductility while eliminating multiple steps required in conventiona...
A new method called plainification aims to enhance material properties by creating stable interfaces between grains at different scales, using fewer or no alloying elements. This approach could lower material costs, increase resource independence, and boost recyclability, paving the way for more sustainable materials development.
Researchers from IKBFU investigated the influence of internal mechanical stresses on glass-coated amorphous microwires. The study, published in Journal of Magnetism and Magnetic Materials, focuses on optimizing magnetostrictive, magnetostatic, and magnetodynamic properties.
Researchers used high-throughput screening to design new multi-component alloys for biomedical applications, achieving efficient composition optimization and improved mechanical properties. The study employed a novel approach combining co-sputtering technology with physical masks to create compositional gradients.
A Yale-led team discovered that molten iron alloys containing silicon and oxygen form two distinct liquids under conditions similar to those in the Earth's core, mimicking the separation of oil and vinegar in salad dressing. This finding provides new insights into the evolution of Earth's magnetic field.
Researchers used ultrashort x-ray pulses to monitor absorption of circularly polarized x-rays by Fe and Gd atoms during ultrafast demagnetization. They found that the demagnetization process at Gd atoms is significantly faster than in pure Gd.
Scientists have found a surprising quantum effect in cobalt-iron alloy materials commonly used in hard disk drives. By controlling electron spin direction, the researchers can alter magnetic state, allowing for more efficient information storage and potential applications in electric motors, generators, and magnetic bearings.
Scientists have created amorphous softmagnetic alloys with high magnetic properties, technological plasticity, and ultrahigh strength. The new iron-based alloys surpass common industrial analogues in terms of their properties, offering relatively low cost and simplicity of industrial production.
HRL Laboratories' breakthrough alloy is the world's first printable high-strength aluminum, registered with the Aluminum Association. The registration validates its commercial value and enables companies to access the alloy through specific powder numbers.
The development of a new generation of catalysts is crucial to meet the world's demand for clean energy. Researchers at the University of Copenhagen have made a breakthrough in finding better, cheaper catalysts using high-entropy alloys, which can aid the conversion of chemical substances in chemical reactions.
A new tungsten-based alloy developed at Los Alamos National Laboratory has shown outstanding radiation resistance, retaining mechanical properties after exposure to high levels of radiation. The material's unique composition and structure have been found to be key factors in its exceptional performance.
A group of researchers in India has developed an iron-platinum alloy that can overcome the thermal stability issues limiting its use as a material for future hard disk drives. By tweaking the L10 phase, they achieved a significant enhancement of the transformation rate and reduced the ordering temperature below 300 degrees C.
Scientists at FEFU create non-destructive method to visualize and quantify defects in transparent materials like single crystals, glasses, and ceramics. The method uses confocal laser scanning microscopy (CLS) to retrieve characteristics of high-density objects with enhanced precision.
Researchers at Chalmers University of Technology have developed a new electrochemical process to clean mercury from water, reducing its content by over 99%. The technique uses a platinum electrode to form an alloy with mercury, creating a stable and recyclable material.
Researchers at Idaho National Laboratory discovered a way to make superalloys more resistant to heat-related failures, allowing them to withstand high temperatures six times longer than untreated counterparts. This breakthrough could improve materials performance in electricity generators and nuclear reactors.
Researchers developed a long-life metal-O2 battery using Li-Na eutectic alloy, exhibiting similar reaction activities to other alloys and suppressing dendrite growth. The study also introduced efficient O2 reduction/evolution catalysts to improve cycling life and rate capability.
Researchers at Tohoku University have found new good catalysts using unique Heusler alloys, enabling the replacement of expensive Pd-based catalysts. The discovery also offers insight into the mechanisms of catalysis on alloys, paving the way for further investigation.