Russian scientists have developed new heat-resistant ceramics for next-generation aircraft engines. The material can withstand heating up to 2000°C and is suitable for thermal barrier coatings of gas turbines, Skoltech said.
The ceramics were created based on the double perovskite Ba₂YNbO₆. The solution addresses a key problem in the industry — existing coatings made of zirconium dioxide lose their properties when overheated above 1200°C, which limits the lifespan and efficiency of engines, Skoltech noted.
Thermal conductivity at 1000°C was about 1.9 W/(m•K) — lower than current standards. The coefficient of thermal expansion is close to the indicators of metal turbine blades, which reduces the risk of cracks during cyclic heating. In terms of rigidity and nanohardness, the material is comparable to existing analogues.
Andrey Dutov, General Director of the National Research Center "N. E. Zhukovsky Institute", emphasized that the promising supersonic aircraft of the future will still heat up.
If it heats up, then probionic structures work. Fundamentally new composites that provide thermal stability at such speeds. We understand how to do it, this problem has been solved.
Earlier, Dutov also revealed a secret about the future supersonic aircraft. It will fly without a nose that lowers down, like on the Tu-144. Pilots will have a view provided by video cameras and advanced technologies.