Articles tagged with Alloys
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Physicists from India reveal Ti-V alloys' superconductivity is influenced by local magnetic fluctuations and spin fluctuations. The competition between these fluctuations and electron-phonon interaction determines the superconducting temperature threshold, contradicting previous assumptions.
Researchers studied the rapid solidification mechanism of undercooled Co-35%Cu-32.5%Pb immiscible alloys, which exhibit good lubrication properties in bearing materials. The study found that metastable phase separation occurs and solute redistribution profiles were established.
Worcester Polytechnic Institute is leading a $7.4 million Army project to develop more durable and cost-effective alloys for military vehicles. The research will focus on designing lightweight alloys that can meet specific military needs, including strength, toughness, and fuel economy.
Researchers from the University of York have created a new class of magnetic materials and devices with improved performance and power efficiency. The breakthrough uses all-optical thermally induced magnetic switching (TIMS) to change the magnetic state of the material, reducing energy consumption.
A long-term study by University of Jena scientists found that nickel-titanium alloy implants release low levels of nickel over time, posing minimal health risk. The research used a longer testing period than usual to examine the metal's behavior and concluded that it is safe for patients with no adverse effects.
A team of researchers has developed an x-ray diffraction technique to measure structural changes in microscopic areas on metallic tubing, allowing them to identify areas under local tensile stresses. This new technique has the potential to predict crack propagation and prevent costly failures in nuclear power plants.
The formation of a hierarchical microstructure in superalloys has been observed for the first time using TEM and APT. Researchers found that spherical and plate-like gamma particles are key to the alloy's mechanical properties.
Duke University researchers used computational methods to identify dozens of new platinum-group alloys that could prove beneficial in applications such as catalytic conversion, corrosion-resistance, and fuel cells. The study provides detailed structural data on known materials and identifies potential targets for further research.
Researchers created a three-dimensional cell culture with layers of smooth muscle, connective tissue, and lining cells embedded within a nickel-titanium alloy scaffold. The hybrid heart valve performed well in a heart simulator, opening and closing under various pressures without structural vulnerability.
A new aluminum-based alloy has been successfully synthesized, enabling safe and efficient hydrogen storage for fuel cell vehicles. Researchers achieved the goal of creating a simple-structured aluminum-based interstitial alloy through extreme pressure and high temperature conditions.
Arizona State University researchers develop nanostructures through dealloying process, showing promise for lithium-ion batteries with improved energy storage capacity. The porous nanostructures can also improve electrochemical sensing technology and provide more resilient radiation damage-resistant materials.
Researchers at Monash University create magnesium alloy with reduced corrosion rates by adding arsenic, a cathodic poison. This breakthrough could lead to widespread adoption of lightweight magnesium in transportation industries.
Researchers develop a new way to rapidly produce high-strength metallic alloys, with potential applications in transport and medical devices. The breakthrough uses Spark Plasma Sintering (SPS) system with integrated gas quenching mechanism.
New research from the University of Southampton reveals copper can rapidly destroy norovirus on surfaces, potentially disrupting infection cycles and lowering outbreak risks. The virus can remain infectious on solid surfaces, but copper alloy surfaces containing over 60% copper prove highly effective in destroying it.
Researchers at UC Davis have developed a new method to create iron-platinum alloys with tailored magnetic properties, making them ideal for future magnetic recording technologies. The alloys retain information even at small nanomagnet sizes and are resistant to heat effects.
Researchers found local configurations of atoms that tend towards a more ordered structure compared to looking at the whole structure. The underlying order in metallic glasses may hold the key to creating new alloys with specific properties.
A University of Tennessee professor has received $300,000 in funding from the US Department of Energy to develop High-Entropy Alloys for improved structural materials. The goal is to enhance efficiency in coal-fired power plants, reducing carbon footprint and lowering fuel costs.
Researchers at Helmholtz Association confirm the existence of Tayler instability, a magnetic phenomenon that reduces rotation rates and creates powerful fluid flows. This discovery has significant implications for the development of liquid metal batteries and their potential use in renewable energy storage.
Researchers have developed a miniature sensor that uses self-sealing valves to collect pristine atmospheric samples, improving computer climate models. The novel design employs an inexpensive microvalve situated above the sample chamber, allowing for low-cost distribution and minimizing contamination.
Researchers have developed novel dual solidification mechanisms for a ternary Fe47.5Cu47.5Sn5 peritectic-type alloy, enabling the effective synthesis of advanced materials. The mechanisms involve peritectic solidification at moderate undercoolings and macroscopic phase separation at greater undercoolings.
Researchers at Tufts University discovered that single atoms of palladium can catalyze industrially important chemical reactions, including the hydrogenation of acetylene. The findings offer significant economic and environmental benefits by reducing costs and waste associated with traditional catalysts.
Researchers have created an alloy that exhibits a strong magnetoresistive effect, enabling sensitive magnetic field detection and tiny actuators. The alloy's unique structure and processing techniques make it a promising next-generation material for microelectromechanical machines.
A novel alloy has been developed that can produce hydrogen fuel from sunlight using photoelectrochemical water splitting. The GaN-Sb alloy, made of inexpensive materials, functions as a catalyst in the process and can be reused indefinitely. This discovery could potentially have profound implications for the future of solar energy.
Researchers at Berkeley Lab have discovered a way to create strong, heat-resistant aluminum alloys by controlling nanoparticle size and shape. The alloy's properties are highly dependent on the uniformity of the nanoparticles and their stability when heated.
Researchers found a direct relationship between chemical synthesis conditions and graphene alloy electronic properties. This discovery enables precise prediction of final product's properties using well-understood chemical procedures.
A new phase-change memory-based 'Moneta' system offers unprecedented performance, with read speeds up to seven times faster than current SSDs. The device uses PCM technology to store data in a metal alloy, providing lower latency and reduced energy requirements for high-performance computing applications.
Researchers used data mining to analyze the corrosion-resistant properties of Alloy 22, a key material for nuclear waste containment. They found that the alloy can predict future corrosion patterns under similar environmental conditions.
Researchers at Rutgers University have identified a class of high-strength metal alloys with potential to improve the performance of engines, medical imaging equipment, security systems, and other applications. These nanostructured metals can convert electrical and magnetic energy into movement or vice-versa.
A team of researchers used the Jülich supercomputer to unravel the structures of DVD materials, revealing a new understanding of the read and write processes. The study provides insight into the rapid phase change mechanisms, which could lead to improved storage materials with longer life, larger capacity, or shorter access times.
Researchers at NC State University create core/shell nanoparticles with gold and silver, as well as alloy nanoparticles, using the 'digestive ripening' technique. This method allows for control over optical properties of the resulting nanoparticles.
Researchers at UConn have developed new alloy materials that behave like gold and resist oxidation, reducing reliance on precious metals. These materials improve contact resistance up to one-million-fold over pure base metals, making them a promising alternative for electronic applications.
Researchers at Arizona State University have developed a new quaternary alloy semiconductor nanowire material that can be used to create more efficient photovoltaic cells and light-emitting diodes. The alloy, which has a wide range of band gaps, can also be used to produce colors for displays.
Scientists at Lawrence Berkeley National Laboratory found that introducing oxygen impurities into highly mismatched alloys can substantially enhance thermoelectric performance. This approach allows for the creation of materials with high thermopower and electric conductivity, promising a breakthrough in green energy production.
Researchers at North Carolina State University have created a new breed of antennas that can be bent, stretched, cut and twisted without breaking. These shape-shifting antennas use an alloy that remains liquid at room temperature, allowing them to retain their mechanical properties and tune into different frequencies by stretching.
Dr. Mark Easton received the award for his work on grain refinement and development of new alloys for casting applications. He is recognized for leading teams in Australian and global research communities.
Researchers at Northwestern University and Boise State University have developed a less expensive shape-shifting memory foam using a nickel-manganese-gallium alloy. The new material exhibits 'magnetic shape-memory' properties, allowing it to retain its new shape when exposed to a magnetic field.
Scientists discover that cerium and aluminum can form a previously impossible alloy under extreme pressure, creating new material properties. The delocalized electrons cause the atoms to collapse in volume, allowing them to nestle together and form an alloy.
This study demonstrates novel microstructural transition in Al80.4Cu13.6Si6 ternary eutectic alloy upon substantial undercooling. The primary phase transforms from (Al) dendrite to faceted (Si) block at an undercooling level of 73 K.
A novel alloy composed of manganese, iron, phosphorus and germanium has been found to exhibit exceptional magnetic cooling properties, making it a potential replacement for traditional gas-compression refrigerators.
Researchers from Northwestern Polytechnical University discovered novel microstructural transitions in the Al80.4Cu13.6Si6 ternary eutectic alloy upon substantial undercooling. The study highlights the importance of understanding rapid solidification mechanisms and microstructure formation for this widely used material.
Researchers at MIT have made significant progress in understanding the mysteries of metallic glass, a class of materials that has resisted analysis for decades. The discovery could lead to the rapid creation of useful new glasses made from metallic alloys with unique physical and magnetic properties.
Researchers from Caltech have developed new titanium-based structural metallic-glass composites that are lighter, less expensive, yet still maintain their toughness and ductility. The breakthroughs could significantly improve the performance of aerospace structures.
A Dutch researcher has developed a new metal alloy that can absorb hydrogen, making it possible to store the gas in lighter tanks. This breakthrough could make hydrogen a cleaner alternative to battery-powered vehicles.
Researchers from the University of Michigan have discovered that metal alloys can degrade due to diffusion, a process where atoms hop through the material, changing its structure. This finding has significant implications for the development of longer-lasting alloys, particularly in electronic materials like solder.
Researchers found networks of iron and nickel nanoparticles embedded within oxide scales, allowing carbon to diffuse through without defects. This discovery could lead to more corrosion-resistant alloys with ten times longer life.
A team of researchers from UC Davis and Los Alamos National Laboratory have found a simple way to calculate the temperature at which the Kondo liquid emerges in heavy-electron materials, leading to new understanding of superconductivity. The discovery may help researchers find organizing principles of heavy-electron superconductivity.
The coercivity mechanism of HDDR Nd-Fe-B permanent magnetic alloy is greatly related to its microstructure defect at the grain boundary, according to the study. For a fixed lex, coercivity reaches maximum at 2r0/lex=1.67, controlled by pinning and nucleation mechanisms.
Researchers discovered a titanium compound that creates a wear-resistant nanoscale layer on engine parts, making it a potential substitute for traditional phosphorus-based additives. This breakthrough could lead to more environmentally friendly engine oils with improved wear resistance.
Researchers at NIST created a method to build complex 3D nanoscale structures of magnetic materials like nickel using standard semiconductor manufacturing techniques. The technique enables the creation of sensors and microelectromechanical systems (MEMS) with magnetic alloys.
Scientists have developed an iron-zirconium alloy that retains its nanocrystalline structure at temperatures above 1,300 degrees Celsius. The alloy's high-temperature stability enables bulk production and easier shaping into useful forms.
A recent study by NOAA scientists shows that certain metals can repel sharks from fishing gear, potentially reducing bycatch and saving millions of animals. The study used a palladium neodymium alloy to alter the swimming patterns of juvenile sandbar sharks, temporarily deterring feeding in groups.
A new aluminum-rich alloy developed by Purdue University engineers can produce hydrogen on-demand for vehicles, power generation, and other applications, reducing costs and environmental impact. The technology is made possible by the controlled microscopic structure of the solid aluminum and gallium-indium-tin alloy mixture.
Researchers at NIST have developed a novel technique for measuring surface roughness, which could lead to more accurate models of deformation and lower tooling costs. The new method uses data from a scanning laser confocal microscope and challenges the traditional linear relationship between surface roughness and material deformation.
Researchers have designed a high-performance permanent magnet alloy that operates with good magnetic strength at 200 degrees Celsius. The new alloy, which replaces pure neodymium with a mixed rare earth, has a lower temperature coefficient, making it suitable for electric drive motors in the automotive industry.
Researchers have developed a new class of magnetic shape-memory foams with improved strain capabilities. The porous alloy's structure amplifies the shape-change effect, making it suitable for tiny motion control devices or biomedical pumps without moving parts.
A team of researchers developed a new class of electrocatalyst that outperforms pure platinum in reducing oxygen. The catalyst features nanoparticles with a platinum-rich shell and a copper-cobalt core.
The technology produces hydrogen by adding water to an alloy of aluminum and gallium, with the gallium component hindering the formation of an oxide skin that prevents oxygen from reacting with aluminum. This allows for the reaction to continue until all the aluminum is used to generate hydrogen on demand.
Researchers at Iowa State University developed a coating technology that improves the heat resistance of turbine blades in jet engines. Rolls-Royce has acquired exclusive rights to commercialize the invention, which is expected to provide significant advantages over existing coatings.
The team is developing materials with similar properties to palladium, but cheaper and more readily available, to improve the efficiency of hydrogen fuel cells. The goal is to find a substitute for platinum, which is currently used as a catalyst in PEMs containing platinum.
Scientists have successfully dissociated water at high pressure to form a solid mixture of molecular oxygen and molecular hydrogen, creating an alloy. The researchers used x-rays to cleave the O-H bonds in water, resulting in a stable alloy that withstood various tests.