## 1 Introduction  
Laser treatment has been the subject of numerous studies since it has a multifactorial effect on the surface condition of the materials under processing, depending on the methods, schemes and modes of treatment that are applied. Along with laser modification methods [1, 2, 3, 4], surface texturing using different laser treatment schemes [5, 6] has been effectively applied to improve the tribological properties of materials. Structural materials, including alloys and metals, as well as ceramics, have been subjected to laser texturing. This method has proved to ensure an increase in the operational characteristics of mechanisms and machine parts, as well as a decrease in the friction coefficient [7, 8, 9]. In [10, 11, 12, 13] it was also shown that tribological properties of materials can be improved by surface microstructure with laser treatment. Laser-assisted surface texturing is used to improve the tribological properties of surfaces in various applications [14]. This method of processing implies the use of laser irradiation with the aim of creating microstructures on the material surface with spatial selectivity of mechanical and physical properties, such as the friction coefficient, microhardness and others. Not only is the synthesis of a low-dimensional and periodic structure a consequence of self-organization processes, which are initiated by femtosecond laser beams [15], but also the direct microfeiler formation using laser irradiation [16] is implemented. Surface texturing was conducted on mechanical components, such as piston rings [17, 18], thrust and rolling bearings [19, 20], mechanical seals [21, 22], and cutting tools [23, 24, 25] with the purpose of further industrial application. It was demonstrated that textured surfaceshad a lower coefficient of friction compared to their untreated counterparts under dry friction conditions without lubricant, and this was also confirmed under boundary and hydrodynamic lubricating conditions. Additionally, to the application of laser texturing to mechanical components, it was realized on the surfaces of bioimplants, such as artificial joints and dental implants, providing improved tribological properties of bioimplant materials [26; 27]. This process showed progressive results when it was applied to the drive tapes of electronic devices, also enhancing the tribological properties of the surfaces of various mechanisms parts [28; 29; 30; 31]. Microstructuring of a silicon carbide ceramic surface by irradiation with laser pulses [32; 33] finds its application. For example, in [34], a periodically repeated microrelief was formed by laser treatment. This ensured the reduction of losses in the friction pair \"SiC-graphite\". Gas-dynamic seals are among the most advanced seals, as they meet the increased reliability requirements, providing the required tightness. The efficiency of such seals, characterized by low leakage and minimum wear of the friction pair, increases with an increase in the rotor speed. Sealing materials must have structural and dimensional stability, high thermal conductivity and sufficient durability as well as gas tightness and chemical resistance. \"SiC-graphite\" and \"WC-graphite\" combinations are used for this purpose. SiC in combination with graphite carbon has a low friction torque and is successfully used in various turbomachines. SiC has a higher thermal conductivity, which allows it to have a lower inertia during nonstationary thermal processes in comparison with other carbides used for this purpose. The application of silicon carbide in O-rings ensures the smaller thermal gradient, which minimizes deformation during transition processes [35]. In modern \"dry\" gas-dynamic seals of compressor rotors of gas-turbine engines, friction pair made of silicon carbide \"SiC-SiC\" is widely used for high pressure drops. The use of such a combination makes it possible to almost eliminate the deformation problem of the friction pair rings from the influence of high pressure drops completely.