Credit: SciTechDaily.com
A newly developed material with exceptional high-temperature resistance shows strong promise for use in energy-efficient aircraft turbines.
Metals that can endure extremely high temperatures are essential for technologies such as aircraft engines, gas turbines, and X-ray equipment. Among the most heat-resistant are refractory metals like tungsten, molybdenum, and chromium, which melt at or above 2,000 degrees Celsius.
Despite their impressive thermal stability, these metals face major drawbacks. They become brittle at room temperature and oxidize rapidly when exposed to oxygen, leading to material failure at only 600 to 700 degrees Celsius. Because of this, they can be used effectively only under complex vacuum conditions (for example, as X-ray rotating anodes).
To overcome these obstacles, engineers have long relied on nickel-based superalloys for components that must function in air or combustion environments at high heat. These alloys have become the standard choice for gas turbine construction and similar high-temperature applications.
A newly developed material with exceptional high-temperature resistance shows strong promise for use in energy-efficient aircraft turbines.
Metals that can endure extremely high temperatures are essential for technologies such as aircraft engines, gas turbines, and X-ray equipment. Among the most heat-resistant are refractory metals like tungsten, molybdenum, and chromium, which melt at or above 2,000 degrees Celsius.
Despite their impressive thermal stability, these metals face major drawbacks. They become brittle at room temperature and oxidize rapidly when exposed to oxygen, leading to material failure at only 600 to 700 degrees Celsius. Because of this, they can be used effectively only under complex vacuum conditions (for example, as X-ray rotating anodes).
To overcome these obstacles, engineers have long relied on nickel-based superalloys for components that must function in air or combustion environments at high heat. These alloys have become the standard choice for gas turbine construction and similar high-temperature applications.
Credit: SciTechDaily.com
A newly developed material with exceptional high-temperature resistance shows strong promise for use in energy-efficient aircraft turbines.
Metals that can endure extremely high temperatures are essential for technologies such as aircraft engines, gas turbines, and X-ray equipment. Among the most heat-resistant are refractory metals like tungsten, molybdenum, and chromium, which melt at or above 2,000 degrees Celsius.
Despite their impressive thermal stability, these metals face major drawbacks. They become brittle at room temperature and oxidize rapidly when exposed to oxygen, leading to material failure at only 600 to 700 degrees Celsius. Because of this, they can be used effectively only under complex vacuum conditions (for example, as X-ray rotating anodes).
To overcome these obstacles, engineers have long relied on nickel-based superalloys for components that must function in air or combustion environments at high heat. These alloys have become the standard choice for gas turbine construction and similar high-temperature applications.
A newly developed material with exceptional high-temperature resistance shows strong promise for use in energy-efficient aircraft turbines.
Metals that can endure extremely high temperatures are essential for technologies such as aircraft engines, gas turbines, and X-ray equipment. Among the most heat-resistant are refractory metals like tungsten, molybdenum, and chromium, which melt at or above 2,000 degrees Celsius.
Despite their impressive thermal stability, these metals face major drawbacks. They become brittle at room temperature and oxidize rapidly when exposed to oxygen, leading to material failure at only 600 to 700 degrees Celsius. Because of this, they can be used effectively only under complex vacuum conditions (for example, as X-ray rotating anodes).
To overcome these obstacles, engineers have long relied on nickel-based superalloys for components that must function in air or combustion environments at high heat. These alloys have become the standard choice for gas turbine construction and similar high-temperature applications.
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