Russian scientists have created the most heat-resistant material in the world
Researchers have developed a ceramic material with the highest melting point of any compound known today. The combination of unique properties makes it a promising option for use in the most loaded elements of missiles and aircraft..
Many aircraft manufacturers and space agencies are developing reusable aircraft to reduce flight costs and flight times. However, despite all engineering advances, some parts of the wings, jet engines and hulls heat up to 2000-4000. °C. Therefore, they require new materials that can tolerate such temperatures normally..
To solve this problem, a group of scientists from the National Research Technological University MISIS has developed a non-stoichiometric hafnium carbonitride (Hf-CN), which has high thermal conductivity and oxidation stability, as well as the highest melting point among all known compounds. To obtain it, the method of self-propagating high-temperature synthesis was used..
Experiments have shown that the melting point of the new ceramic material is higher than that of binary hafnium carbide (the former record holder), and its hardness is 21.3 GPa. However, due to the high melting threshold (more than 4000 °C), the team has not yet managed to determine the exact boundary. Theoretical models predict that it should be around 4200 °FROM.
In the future, scientists will study the effectiveness of using hafnium carbonitride in hypersonic conditions, which will allow assessing the prospects for its use in the aerospace industry..
We also previously reported on the development of today’s blackest material that absorbs 99.96% of light..
text: Ilya Bauer, photo: Sergey Gnuskov / NUST MISIS