The press office of the National Research University announced that the university's scientists have created a new type of high-temperature protective coating based on chromium, aluminum, and nickel carbide.
Russia has developed a rust- and corrosion-resistant coating made from chromium carbide.
The office notes that scientists have also developed a new technique for using these coatings, where together they increase the resistance of different structures to corrosion and oxidation at high temperatures by 1.5 times.
“For the first time, we have obtained protective coatings based on chromium carbide in conjunction with nickel and aluminum by implementing sequential methods of electric spark alloying, cathode arc deposition, and magnetron spraying,” says Philip Kiryukhantsov, laboratory director and senior researcher at the university. “The new coating has a composite microstructure that allows for the integration of the beneficial effects of the three methods.”
Philip Kiryukhantsov and his colleagues have developed a method that allows the simultaneous application of three different types of coatings to the same structure within the same vacuum chamber. The scientists made this discovery during experiments with three types of anti-corrosion materials—chromium carbide—as well as several forms of coatings based on nickel and aluminum alloys.
According to scientists, the new coating and its application method increase the level of protection for structures by approximately 1.5 times compared to traditional anti-corrosion coatings based on chromium carbide. Therefore, the future use of this coating will extend the service life and performance of key components in propulsion systems, oil refining pumps, and other parts subject to the combined effects of corrosion and rust
