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New metal alloys boost high-temperature heat treatment of jet engine components
July 25, 2007Measurement scientists at the National Physical Laboratory have reduced the uncertainty of thermocouple temperature sensors at high temperatures to within a degree. This may allow manufacturers to improve efficiency and reduce wastage in the quest for more efficient jet engines and lower aircraft emissions.
Aircraft engines are more efficient at higher temperatures, but this requires thermal treatment of engine components at very specific high temperatures in excess of 1300 °C. If the heat treatment temperature deviates too much from the optimal temperature, the treatment may be inadequate.
Thermocouples are calibrated using materials with known melting points (fixed points), but the available reference materials in the region of the very high temperatures required to treat jet engine components have a large uncertainty compared with the lower temperature fixed points.
Using a new type of metal alloy, NPL scientists have identified a range of reference points for thermocouples beyond 1100 °C. With this added confidence in thermal sensors, component manufacturers are expected to start improving hotter thermal treatments and reducing wastage during production of parts for engines which can run at higher temperatures.
National Physical Laboratory
Using a new type of metal alloy, NPL scientists have identified a range of reference points for thermocouples beyond 1100 °C. With this added confidence in thermal sensors, component manufacturers are expected to start improving hotter thermal treatments and reducing wastage during production of parts for engines which can run at higher temperatures.
National Physical Laboratory
Metal Alloy Current Events and Metal Alloy News RSSHydrogen tank lighter than battery
Dutch-sponsored researcher Robin Gremaud has shown that an alloy of the metals magnesium, titanium and nickel is excellent at absorbing hydrogen.
Turning Waste Material into Ethanol
Say the word "biofuels" and most people think of grain ethanol and biodiesel. But there's another, older technology called gasification that's getting a new look from researchers at the U.S. Department of Energy's Ames Laboratory and Iowa State University. By combining gasification with high-tech nanoscale porous catalysts, they hope to create ethanol from a wide range of biomass, including distiller's grain left over from ethanol production, corn stover from the field, grass, wood pulp, animal waste, and garbage.
Jupiter and Saturn full of liquid metal helium
A strange, metal brew lies buried deep within Jupiter and Saturn, according to a new study by researchers at the University of California, Berkeley, and in London.
Nanoparticles unlock the future of superalloy metals
Sandia National Laboratories is pioneering the future of superalloy materials by advancing the science behind how those superalloys are made.
New Techniques Pave Way for Carbon Nanotubes in Electronic Devices
Many of the vaunted applications of carbon nanotubes require the ability to attach these super-tiny cylinders to electrically conductive surfaces, but to date researchers have only been successful in creating high-resistance interfaces between nanotubes and substrates.
The nanoworld of corrosion
The effect of corrosion has an impact on about 3% of the world's Gross Domestic Product. From a positive point of view, however, chemical attack of metal surfaces may result into surface nano-structures with very interesting technological applications such as catalysts and sensors.
Bare metal stents deliver gene therapy to heart vessels with less inflammation in animal studies
Improved materials may allow stents, tiny metal scaffolds inserted into blood vessels, to better deliver beneficial genes to patients with heart disease, by reducing the risk of inflammation that often negates initial benefits.
South African Large Telescope (SALT) Makes Its Debut
Rutgers, The State University of New Jersey, today joined 10 partners worldwide to release the first full-color astronomical images made by the Southern African Large Telescope (SALT) in South Africa.
Living Metals
Using synchrotron x-ray microbeams, a research team from the Max Planck Institute for Metals Research in Stuttgart and the ESRF has been able to observe for the first time that the microscopic structure of a crystalline material fluctuates in time. The results are published today in Science Express with the title: Scaling in the Time Domain: Universal Dynamics of Order Fluctuations in Fe3Al.
Norwegian Supernet Keeps the Pharaohs in Place
Several of the world's best known cultural treasures are located in areas prone to earthquakes. A new metal alloy will secure their existence.
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