MOST HEAT RESISTANT MATERIAL EVER CREATED

Most Heat Resistant Material ever created

A ceramic material with the highest melting point among currently known compounds has been developed by group of scientists from National University of Science and Technology "MISiS".

Most Heat Resistant Material ever created

Top Current Affairs 30th May 2020

Source | Physics.org


GS Paper III: Science and Technology – developments and their applications and effects in everyday life Achievements of Indians in science & technology; indigenization of technology and developing new technology.



MOST HEAT RESISTANT MATERIAL EVER CREATED

Key Takeaways

  • The newly developed ceramic material is the one with the highest melting point among all the known compounds.
  • It has been developed by group of scientists from National University of Science and Technology “MISiS”.
  • While experimenting, the scientists chose triple hafnium-carbon-nitrogen system, hafnium carbonitride (Hf-C-N).

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Context: A ceramic material with the highest melting point among currently known compounds has been developed by group of scientists from National University of Science and Technology “MISiS”.

  • The National University of Science and Technology “MISiS” is Russia’s primary technological university in the field of steel-making and metallurgy.

Key Details about the newly developed most Heat-Resistant Material

  • The newly developed ceramic material is the one with the highest melting point among all the known compounds.
  • Due to the unique combination of physical, mechanical and thermal properties, the material is promising for use in the most heat-loaded components of aircraft, such as nose fairings, jet engines and sharp front edges of wings operating at temperatures above 2000 degrees C.

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How did they achieved this feat?

During the recent developments, the goal of the scientists was to create a material with the highest melting point and high mechanical properties.

  • While experimenting, the scientists chose triple hafnium-carbon-nitrogen system, hafnium carbonitride (Hf-C-N) (it was previously predicted that hafnium carbonitride would have a high thermal conductivity and resistance to oxidation, as well as the highest melting point among all known compounds (approximately 4200 degrees C)).
  • At the moment, the specific melting point of the new material is above 4000 degrees C, and could not be determined precisely in the laboratory.
  • In the future, it has been planned by the team to conduct experiments on measuring the melting temperature by high-temperature pyrometry using a laser or electric resistance.

What are the various applications of such a material?

  • Many leading space agencies like NASA, ESA, as well as agencies of Japan, China and India are actively developing reusable spaceplanes, which will significantly reduce the cost of delivering people and cargo to orbit, as well as reduce the time intervals between flights.
  • However, when exiting the atmosphere and re-entering it, on the surface of the wings of the spaceplane, temperatures of about 2000 degrees C can be observed, reaching 4000 degrees C at the very edge.
  • Therefore, when it comes to such aircraft, there is a question associated with the creation and development of new materials that can work at such high temperatures. The newly formed material, therefore, could be a possible solution to this problem.

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