**5. Conclusions**

Today, the introduction of additive technologies, particularly LPBF in production, is hampered by the lack of scientifically based recommendations on the choice of process parameters for newly introduced metal-based materials and alloys. It is related to the lack of systematic studies of the LPBF, the influence of its factors on the quality of grown products, the formation of defects related to the presence of the oxide phase in the structure of the solids, and the lack of critical engineering solutions to minimize these types of structural defects and surface roughness. The analysis of oxide phase formation shows that the formation of structural and surface defects such as cracks, pores, oxide phases, etc., is determined by many process factors and related to the LPBF specifics depending on the chosen modes, material, and powder properties (reflectivity, sphericity, etc.).

Surface plasma cleaning methods demonstrate their ability to remove the oxide phase in metal products that can be used in laser powder bed fusion as a part of the unit. This provides conditions for reliable product growing that can be even more durable in extreme conditions by removing the oxide phase, smoothing the surface, and recrystallization by heat treatment (decrease in grain size). Systematization and comparative analysis of the existed plasma-based methods provided by different types of plasma sources for physical surface cleaning have shown that the plasma processing using additional ion bombardment by a plasma source based on an electric discharge with a dielectric barrier can be preferable to minimize the oxide phase and other structural and surface defects after LPBF.

Using a newly developed plasma source as a part of the LPBF unit can significantly reduce the labor intensity of production engineering products with the specific requirements to their physical and mechanical properties and surface quality and, in prospect, enlarge their exploitation ability and service life for working in cyclic loads.

Developing the LPBF production setup equipped with an atmospheric plasma source based on a dielectric barrier discharge could contribute to creating a new type of hybrid equipment for transition to the sixth technological paradigm associated with Kondratieff's waves.
