In many cases parts of machines and structures are exposed to wear or action of aggressive corrosive environments. In such cases, the structure integrity can be compromised in a relatively short period of time. Therefore, to extend the service life of machine elements the common practice is to protect their surfaces by coating. One of the possible protection methods is surfaceing. Due to a number of advantages the plasma transferred arc welding (PTAW) process has found significant use in the

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... ld of surface protection. This paper presents the impact of parameters of PTAW process on the weld layer geometry and on dilution of the base material and filler material.