Selected high-entropy alloys for thin film deposition, with improved mechanical and corrosion properties
High Entropy Alloys (HEA) are multi-principal element materials that have been intensively studied over the past decade. In this work, two Al-Fe-Cr-Ni-Cu HEAs were synthesized and processed into thin films by DC magnetron sputtering, and their structural, mechanical and electrochemical properties were systematically evaluated. The coatings exhibited dense, uniform structures with strong adhesion to 304 L stainless steel. Coatings hardness was higher than the substrate material. Electrochemical tests in 3.5 g/L NaCl solution revealed superior corrosion resistance for the I8-10-derived coating, which achieved the lowest corrosion rate (5.54E-05 mm/year) and the highest polarization resistance (5.470.008 Ω), outperforming both the bulk alloys and uncoated substrates.
Authors
- Nicoleta Vitan
- Ioan Albert Tudor (ORCID: https://orcid.org/0000-0003-2964-6764)
- Dumitru Mitrică (ORCID: https://orcid.org/0000-0001-8306-9246)
- Bogdan Postolnyi (ORCID: https://orcid.org/0000-0003-3426-5085)
- A.D. Pogrebnjak (ORCID: https://orcid.org/0000-0002-9218-6492)
- Cosmin Romanițan (ORCID: https://orcid.org/0000-0002-5615-6624)
- Arcadii Sobetkii (ORCID: https://orcid.org/0000-0002-7129-8778)
- Laurentiu-Florin Mosinoiu (ORCID: https://orcid.org/0000-0002-8105-6609)
- Ștefania Caramarin (ORCID: https://orcid.org/0000-0001-7898-8774)
- Andreea Matei (ORCID: https://orcid.org/0000-0003-3061-4209)
- Beatrice-Adriana Șerban
- Mihai Ghiţă
- Elena Olaret
Institutions
- Slovak University of Technology in Bratislava (SK)
- University of Trnava (SK)
- Universidade do Porto (PT)
- Sumy State University (UA)
- Applied Photonics (United Kingdom) (GB)
- National Institute for Research and Development in Microtechnologies (RO)
- Institute of Non-ferrous and Rare Metals (RO)
- Universitatea Națională de Știință și Tehnologie Politehnica București (RO)
Publication Details
- Journal
- Scientific Reports
- Published
- 2025-10-28
- DOI
- https://doi.org/10.1038/s41598-025-21558-6
- Primary Topic
- High Entropy Alloys Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Ministerul Cercetării, Inovării şi Digitalizării
- European Commission
- Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii
- Colegiul Consultativ pentru Cercetare-Dezvoltare şi Inovare