Articles tagged with Alloys
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 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 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 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.
Duke University researchers propose a new 'metal sandwich' alloy that could be superconductive at a higher temperature than current materials. Lithium monoboride, a binary alloy of boron and lithium, may have the potential to break the record for highest superconducting temperature.
Researchers from Max Planck Institute and European Synchrotron Radiation Facility study gold-copper alloy corrosion process, revealing protective surface layer and gold nano-islands. The discovery provides insights into preventing corrosion in alloys used in corrosive environments.
The European Union's ban on lead in electronic appliances has led to the widespread adoption of Ames Laboratory's lead-free solder, which was patented in 1996. The solder blend of tin-silver-copper alloy offers a lower melting temperature and greater strength than other alternatives.
A £6m grant has been awarded to develop new methods for processing, forming, joining, and surface engineering of aluminium, titanium, and magnesium. The project aims to create lighter, more environmentally-friendly vehicles using these materials.
Researchers identify columnar grain boundaries as cause of whisker and hillock formation. Alternative electroplating method aims to disrupt these structures, reducing environmental hazards and improving component reliability.
Researchers at Duke University developed a computer model to study the effect of adsorbed gas on quasicrystal alloys, which could lead to improved low-friction properties for machine parts. The model suggests ways to control the transition from quasicrystalline to crystalline structures, preserving the alloy's high lubricity.
Student researcher Christopher Kovalchick used a low-cost technique to test tiny samples of four metal alloys and found that combining platinum with chromium resulted in the greatest strength. The findings are important because pure platinum is too soft for use in durable jewelry, but adding chromium improves its mechanical properties.
Researchers have made significant progress in developing lead-free solders and electrically-conductive adhesives, offering environmentally friendly alternatives to conventional solder materials. However, challenges remain, including high processing temperatures and conductivity fatigue.
An-Pang Tsai wins inaugural Dubois Award for his remarkable string of discoveries of new quasicrystalline phases, including five main families. His work has had a profound impact on the science of quasicrystals, enabling the preparation of large samples and fundamental property measurements.
Scientists have created a model that simulates how corrosion spreads through an alloy, inspired by the cracking of a brick wall. The research could help predict when preventive maintenance is needed for aircraft materials.
A small amount of iron adds 15-30% to the effective cooling capacity of a material, enabling improved near-room-temperature applications. The iron supplement eliminates hysteresis losses, allowing the material to perform at its peak potential.
Researchers at Purdue University have created a new type of metal alloy with nanometer-scale bumps that can stimulate the body to regrow bone and other tissues. This technology has the potential to improve artificial body parts, such as hip replacements, by reducing the rate of rejection and failure.
Researchers at Brookhaven National Laboratory have developed a new method for producing electrodes, allowing for the creation of novel alloy compositions and improving electrochemical reaction rates. The method uses hydrogen to form nanocomposite materials, making it more effective and practical than traditional methods.
Brookhaven National Laboratory scientists have developed a cobalt-free alloy that can store more charge and resist corrosion, leading to longer battery life. The discovery could lead to more affordable electric vehicles.
Researchers have combined laser heating and ultrasonic inspection to improve the detection of fatigue cracks in aircraft parts. The new method is more accurate than previous methods, but also more time-consuming and expensive.
Researchers have created an alloy that can handle high-power and high-frequency microelectronic devices better than pure silicon-carbide. The alloy conducts twice as much current, making it a promising material for next-generation electronics.
Researchers at UC Davis report a significant breakthrough in superplasticity, achieving the ability to stretch metal without breaking at lower temperatures. The discovery involves using nanostructured materials, which are 1,000 times smaller than microcrystals, resulting in stronger and more practical materials.
Researchers at National Jewish Health found cases of chronic beryllium disease in two people exposed to 2 percent beryllium copper alloy, a product used in toasters, bicycles, and electronics. Chronic beryllium disease is caused by inhaling beryllium dust into the lungs, leading to lung scarring and oxygen transfer issues.
Researchers at the University of Delaware have developed a novel alloy of silicon-carbide and germanium that may handle hot, high-power microelectronic and MEMS devices better than silicon. The material also shows promise for enhancing the speed and stability of next-generation silicon-germanium chips.
The new technology allows manufacturers to produce complex shapes out of high-strength and high-performance metals and alloys. Metal injection moulded parts are finding use in various industries, including office equipment, industrial machines, medical appliances, and household goods.
A combination of XPS and XRD techniques reveals complex near-surface structures of oxidized palladium alloys, showing chemically bound water and microcrystals of gold and copper. The research provides new information on the mechanical properties and adherence to dental porcelain.
University of Delaware researchers have developed a silicon-based device that can convert some light into electricity using a germanium-carbon alloy. The device, which was tested with laser light, showed a conversion rate of 1.4 percent and demonstrated efficient rectification numbers. This breakthrough has the potential to bridge the ...