Author: A. Lepeshev, D. J. Sordele, E. Rozhkova, A. Ushakov

Institute: Siberian Federal University, st. Kirenskogo, 26, 660074, Krasnoyarsk, Russia; Ames Laboratory, Iowa Department of Energy, Iowa State University, Ames, Iowa, USA

In recent decades, the scientific and engineering community has shown increasing interest in the research and application of quasicrystalline alloys. Single-component quasicrystals, such as Al–Cu–Fe, have unique structural and physical and mechanical properties, which opens up potential for their use in various industrial sectors.

One of the methods for changing and improving the properties of quasicrystalline alloys is plasma spraying. This technology allows the deposition of thin films on the surface of a material, providing a change in its structure and properties. As a result of the plasma spraying process, it is possible to achieve a uniform coating of the Al–Cu–Fe alloy with additional elements, which leads to a change in its physical and mechanical properties.

An important aspect of plasma spraying is the choice of process conditions, such as the composition of the working mixture, plasma flow, pressure and temperature. The optimal set of parameters should provide a film with the desired mechanical characteristics, such as hardness, strength and wear resistance. Uncontrolled changes in these parameters can lead to the formation of defects in the structure of the alloy and a decrease in its performance.

After the plasma spraying process, it is necessary to analyze the structure and physical and mechanical properties of the resulting film. This may include studying its microstructure using optical and electron microscopy, analyzing its chemical composition using X-ray diffraction or energy-dispersive X-ray spectrometry, and measuring mechanical properties such as hardness, strength and elasticity.

The study of modification of the structure and physical and mechanical properties of the quasicrystalline Al–Cu–Fe alloy during plasma spraying is of great importance for the development of modern technologies. The results of such research can be used to improve production processes and create new materials with unique properties. It is expected that the development of optimal conditions for plasma spraying will increase the strength, hardness and wear resistance of the alloy, as well as expand its scope in various industries.