Manufacturing Technology 2026, 26(2):185-198 | DOI: 10.21062/mft.2026.015

Influence of the Manufacturing Route on the High-Temperature Oxidation Behavior of IN718 Alloy in Simulated Modern Energy Environments

Patrícia Lovašiová ORCID...1, Jan Hruška ORCID...1, Tomáš Lovaši ORCID...1, Miroslav Zetek ORCID...2, Yusuf Bakir ORCID...2, Ivana Zetková ORCID...2
1 SVÚM a.s., Tovární 2053, 250 88 Čelákovice, Czech Republic
2 Faculty of Mechanical Engineering, University of West Bohemia, Univerzitní 2732/8, 301 00 Pilsen, Czech Republic

The use of supercritical water in energy applications is motivated by the aim of increasing the thermal efficiency of power systems. However, structural materials exposed to this environment may undergo corrosive degradation. The objective of this study was to conduct experiments on samples exposed to simulated operational conditions in supercritical water, steam, and air. The material surfaces were sub-sequently analyzed using optical microscopy and scanning electron microscopy coupled with energy-dispersive spectroscopy (SEM/EDS). Particular attention was given to the formation of oxide layers on the nickel-based alloy Inconel 718 produced by additive manufacturing by PBF-SLM technology. The corrosion behavior was evaluated by monitoring mass gains. The results were compared with materials manufactured using conventional techniques.

Keywords: Inconel 718 alloy, Supercritical Water, SCWR, Steam, Additive Manufacturing Technology
Grants and funding:

This result was created within the project TN02000018 "National Centre of Competence ENGINEERING", which is co-financed from the state budget by the Technology Agency of the Czech Republic under the National Centres of Competence Programme

Received: October 2, 2025; Revised: March 13, 2026; Accepted: March 20, 2026; Prepublished online: April 22, 2026; Published: April 23, 2026  Show citation

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Lovašiová P, Hruška J, Lovaši T, Zetek M, Bakir Y, Zetková I. Influence of the Manufacturing Route on the High-Temperature Oxidation Behavior of IN718 Alloy in Simulated Modern Energy Environments. Manufacturing Technology. 2026;26(2):185-198. doi: 10.21062/mft.2026.015.
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