Moscow: Scientists at the Russian National University of Science and Technology MISIS have developed a new composite material combining high strength, thermal resistance, and durability, which could be used in aviation, energy, and mechanical engineering.
According to Emirates News Agency, the development was reported by TV BRICS, citing Russia's Ministry of Science and Higher Education. Researchers noted that conventional heat-resistant alloys tend to lose strength and undergo oxidation during prolonged exposure to high temperatures, leading to material failure and increased safety risks.
To address this issue, the team introduced aluminum oxide nanoparticles into an alloy composed of chromium, iron, cobalt, nickel, and copper. These particles act as a barrier to oxygen penetration, which is a primary cause of material degradation when heated, thus preventing the formation of microcracks.
Tests demonstrated that the modified alloy was 29 percent stronger and 27 percent harder than the base material, with its wear resistance increasing sixfold. The composite successfully withstood prolonged heating at temperatures up to 750 degrees Celsius, with the oxidation rate reduced by half. Remarkably, the material retained its ductility and did not fail under compression.
Engineer Umedzhon Narzulloev, a participant in the study, stated, "The new composite may find application in the manufacture of components exposed to high loads and temperature fluctuations: turbine and compressor parts, engine valves, nozzle elements, and protective coatings, as well as contact surfaces of electrical engineering equipment."
The development addresses the demand in modern industry for materials that can maintain their properties under increased temperature and pressure conditions.