Articles tagged with Sintering
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Researchers have demonstrated a new technique using lasers to create ceramics that can withstand ultra-high temperatures. The technique allows for the creation of ceramic coatings, tiles, or complex three-dimensional structures, enabling increased versatility in engineering new devices and technologies.
Researchers at IISc developed a bacteria-based technique to repair lunar bricks damaged by harsh temperatures and solar winds. The process uses Sporosarcina pasteurii to produce calcium carbonate crystals that fill defects and strengthen the brick.
Researchers have developed cold sintering to recycle materials repeatedly without a decrease in quality. This process combines powder-based materials into dense forms at low temperatures and allows for recycling multiple times.
Researchers developed a sinter-free method for efficient, low-temperature synthesis of lithium ceramic, enabling the creation of solid-state batteries with higher power density and lower production costs. This breakthrough could accelerate the transition to electric vehicles by reducing the reliance on conventional lithium-ion batteries.
University of Central Florida researchers have discovered a method that uses microwaves to melt lunar soil, coupled with beneficiation technology, may be the best option for building safe and economical lunar landing pads. This approach could increase microwave absorption by up to 80% using magnetic fields, making it more energy-effici...
Researchers at Fudan University reviewed fundamental mechanisms and recent developments in selective laser sintering of polymers. The study highlights the need for innovative materials, sintering methods, and post-processing techniques to improve the efficiency and performance of SLS polymer parts.
Scientists have successfully printed thin, one-millimeter-thick permanent magnets using selective laser sintering, retaining suitable characteristics for industrial use. This breakthrough enables complex magnet configurations necessary for pacemakers and minimizes production waste.
Researchers have successfully prepared highly dense superconducting bulk magnesium diboride with a high current density using an unconventional spark plasma sintering method. The material exhibits excellent superconducting properties, including a high critical current density of up to 6.75 x 10^5 ampere/cm^2 at -253°C.
Researchers from Nagoya Institute of Technology investigated the solidification mechanism of magnesium carbonate and hydroxide systems using cold sintering. The study found that water played a crucial role in promoting dissolution-precipitation reactions, enabling densification at lower temperatures.
Researchers at Shibaura Institute of Technology developed an optimized recipe to retain superconductivity in bulk MgB2 by enhancing its critical current density. By combining sintering conditions with controlled addition of nanometer-sized amorphous boron and dysprosium oxide, the team achieved a superior critical current density.
Scientists at HZB created sintered porous silicon-aluminum nanomaterials with reduced thermal conductivity using a novel process. The resulting materials have tiny pores, crystalline nanoparticles, and domain boundaries that suppress heat conduction.
The University of Central Florida has received a $1.5 million U.S. Department of Defense award to develop high-performance fuels for hypersonic propulsion. The project aims to create new solid fuels that can provide wider flammability limits and longer range while constraining volume.
Researchers at USTC have successfully synthesized small-sized Pt intermetallic nanoparticle catalysts with ultralow Pt loading and high mass activity. These catalysts exhibited excellent electrocatalytic performance for oxygen reduction reaction in proton-exchange membrane fuel cells, potentially decreasing the cost of fuel cells.
Rice materials scientists develop a method to print arbitrary 3D shapes, creating micro-scale electronic, mechanical and photonic devices. The process involves two-photon polymerization and doping with rare earth salts for photoluminescent properties.
New research from Shibaura Institute of Technology reveals that spark plasma sintering produces highly dense MgB2 bulks with improved mechanical and superconducting properties. The resulting samples exhibit superior strengths and high trapped field performance, making them suitable for space applications and electric machines.
Researchers from University of Science and Technology of China have quantified the critical particle distance to inhibit metal sintering in catalysts. The study found that adjusting particle spacing can significantly impact sintering, with PMC dominant at short distances and OR dominant at long distances.
Researchers at WMG, University of Warwick have developed routes to mitigate the effects of thermal gradients on microstructure, enabling wider use of flash sintering. Adopting these modified flash sintering routes will enable lower energy production of solid-state batteries and complex ceramic products.
Researchers at Far Eastern Federal University develop a new approach to high-speed synthesis of Nd3+:YAG optical ceramics, reducing consolidation time by 10-100 times and improving their transparency. The technique enables the production of diode-pumped microlasers with short lasing pulse duration, high peak power, and beam quality.
Researchers at the University of Maryland have developed a new method for creating high-quality, high-performance solid-state electrolyte thin films. This 'printing and radiative heating' approach enables rapid production of dense and uniform films with superior ionic conductivity.
Researchers developed a novel technique to produce high-performing biometric sensors by printing them directly on human skin at room temperature. The sensors can capture precise temperature, humidity, blood oxygen levels, and heart performance signals, and are environmentally friendly, making them suitable for people with sensitive skin.
Researchers invent new laser inversion technique to overcome SLS limitations, enabling simultaneous printing of multiple materials. The process allows for stronger, denser materials and complex multi-material parts without assembly, expanding industries such as aerospace, automotive, and robotics.
A new ultrafast high-temperature sintering method has been invented, promising applications in solid-state batteries, fuel cells and 3D printing technologies. The process requires less than 10 seconds of total processing time, compared to traditional furnace approaches that take hours.
Researchers have produced barium titanate ceramics using cold sintering at record low temperatures, achieving high quality without the need for secondary heating. This breakthrough could lead to more efficient manufacturing and reduced environmental impacts.
Scientists have developed Y2O3-MgO nanocomposite ceramics with uniform distribution of two phases, microhardness over 11 GPa, and average grain size of 250 nm. The new material can transmit over 70% of IR-range light with wavelength up to 6,000 nm.
A new techno-economic analysis reveals the cold sintering process offers financial and environmental benefits for ceramic manufacturers. The study found that using CSP reduces energy use and capital costs, making it the most economically attractive option for producing ceramics.
Researchers from Far Eastern Federal University propose pre-annealing green bodies to regulate mesostructure, leading to reduced porosity and improved laser efficiency. The study aims to establish a detailed correlation between initial green body homogeneity and final material properties.
Researchers have developed a more efficient method for laying down thin-film circuitry using copper nanoparticle ink with green laser light. The study found that optimal settings for laser power and scanning speed can enhance conductivity, while sintering reduces film thickness by up to 74%.
Researchers from Osaka University have developed a technique to fabricate ceramic ultra-thin films using solution process, achieving high power conversion efficiency. The technique eliminates the need for heating, drastically reducing production cost and environmental impact.
A team of researchers at Penn State has developed a cold sintering process to create nanocomposites of ceramics and 2D materials, known as MXenes. This innovation enables the production of high-performance materials with potential applications in solid-state batteries, thermoelectrics, and more.
The study successfully uses an air-pressure control furnace to rapidly synthesize Li2O-Nb2O5-TiO2 solid solutions, achieving material synthesis in a shorter period than conventional electric furnaces. The researchers attribute this success to the oxygen diffusion mechanism involving interstitial oxygen.
A new alloy is being developed through the testing of a sintering process in microgravity aboard the International Space Station. The investigation uses liquid phase sintering to study the degree of distortion caused by microgravity, with potential applications for space manufacturing and Earth-based industries.
Researchers have successfully used solar sintering to process manganese ore fines, eliminating fossil fuel combustion and reducing CO2 emissions by up to 100%. This innovative method could lead to a commercial solar sintering industry, replacing carbon-intensive steel production methods in South Africa.
Researchers at Oregon State University developed a new method for sintering nanoparticles using intense pulsed light, enabling faster and more efficient production of advanced flexible electronics. The breakthrough allows for larger areas to be processed in seconds, reducing the need for high-temperature equipment.
Researchers have developed a porous, highly compressive 3D graphene material suitable for bone implants, demonstrating its potential as a replacement for titanium. The technique uses spark plasma sintering to weld nanoscale graphene sheets, producing materials with high mechanical strength and biocompatibility.
Researchers at Oregon State University have discovered a fundamental flaw in the physics of photonic sintering, leading to improved product quality and process efficiency. The new understanding allows for high-quality products to be created at much lower temperatures, twice as fast and with 10 times more energy efficiency.
A researcher at North Carolina State University has created a more efficient method for producing high-density ceramic materials. The new technique, known as selective-melt sintering, allows for the creation of ceramics with no porosity and increased strength in just under a second.
The University of Leeds is working on a new type of body armor made from cement, combining super-strong cement with recycled carbon fibre materials to create a material tough enough to withstand most types of bullets. The project aims to provide cost-effective protection for people at risk, such as security guards and reporters.
A Georgia Institute of Technology researcher has developed a new boron carbide formation process that increases the hardness and improves the ballistic performance of the material used in body armor. The new method can yield higher relative densities and better ballistic performance than currently available methods.
Professor Behrokh Khoshnevis has developed a new machine that can produce 3D 'printouts' in plastic and metal more quickly and cheaply than existing systems. The 'Selective Inhibition of Sintering' (SIS) process uses high heat to melt only selected areas, reducing energy intensity and cost.
A team of Penn State researchers successfully used microwave sintering to produce machine components with improved mechanical properties in just 10-30 minutes, compared to traditional sintering methods which take long periods of time and large amounts of energy.
Researchers have resolved a long-standing paradox in the theory of sintering ceramics by proposing a new model that explains shape changes during the process. The model takes into account energy differences among differently oriented surfaces and edges, reducing total energy through shape changes.