{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:41:46Z","timestamp":1760060506172,"version":"build-2065373602"},"reference-count":33,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T00:00:00Z","timestamp":1756425600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research Grants of the TUIASI","award":["GNaC2023_285\/2024"],"award-info":[{"award-number":["GNaC2023_285\/2024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Zinc-based alloys have been extensively studied for their potential applications in biodegradable materials, yet their corrosion behaviour necessitates the development of effective surface treatments. In this study, a ZnMg alloy was developed by casting in an inert medium and subsequently treating it with Plasma Electrolytic Oxidation (PEO). The corrosion behaviour was characterised in a 0.9% NaCl solution through Tafel polarisation, cyclic polarisation, and electrochemical impedance spectroscopy (EIS). Additionally, the surface morphology was investigated using scanning electron microscopy (SEM) and EDX analysis. The structure and phases of the oxide layer and of the corrosion products were investigated through X-ray diffraction (XRD). The electrochemical results demonstrated a substantial decrease in the corrosion current density and an increase in the polarisation resistance for the treated samples. Electrical Impedance Spectroscopy (EIS) modelling revealed the formation of a layer exhibiting distinct capacitive behaviour, comprising two distinct regions. XRD analysis confirmed evidence of corrosion compounds characteristic of chlorinated media on the surface. The findings indicated that PEO treatment enhanced the corrosion resistance of the ZnMg alloy, suggesting its suitability for biomedical applications or exposure to marine environments characterised by high levels of corrosion.<\/jats:p>","DOI":"10.3390\/ma18174064","type":"journal-article","created":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T16:42:21Z","timestamp":1756485741000},"page":"4064","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["PEO Treatment for Improved Corrosion Resistance in a Zn-Mg Alloy: Electrochemical and Structural Analysis"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5128-4491","authenticated-orcid":false,"given":"Ramona","family":"Cimpoe\u0219u","sequence":"first","affiliation":[{"name":"Department of Materials Science, Faculty of Materials Science and Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 41 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sorin","family":"Moga","sequence":"additional","affiliation":[{"name":"Regional Center of Research and Development for Materials, Processes, and Innovative Products Dedicated to the Automotive Industry, National University of Science and Technology Politehnica Bucharest, Pitesti University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0817-3523","authenticated-orcid":false,"given":"Bogdan","family":"Istrate","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 43 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-6872-8616","authenticated-orcid":false,"given":"Fabian","family":"Lupu","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 43 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicanor","family":"Cimpoesu","sequence":"additional","affiliation":[{"name":"Department of Materials Science, Faculty of Materials Science and Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 41 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8798-1849","authenticated-orcid":false,"given":"Ana-Maria","family":"Roman","sequence":"additional","affiliation":[{"name":"Department of Materials Science, Faculty of Materials Science and Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 41 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4233-5231","authenticated-orcid":false,"given":"Gheorghe","family":"B\u0103d\u0103r\u0103u","sequence":"additional","affiliation":[{"name":"Department of Materials Science, Faculty of Materials Science and Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 41 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ion","family":"P\u0103tra\u0219cu","sequence":"additional","affiliation":[{"name":"SC iP AUTOMATIC DESIGN SRL, 6 Industriei Str., 117435 Lunca Corbului, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Remus","family":"Diaconu","sequence":"additional","affiliation":[{"name":"SC iP AUTOMATIC DESIGN SRL, 6 Industriei Str., 117435 Lunca Corbului, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Romeu","family":"Chelariu","sequence":"additional","affiliation":[{"name":"Department of Materials Science, Faculty of Materials Science and Engineering, \u201cGheorghe Asachi\u201d Technical University of Iasi, 41 Dimitrie Mangeron Blvd., 700050 Iasi, Romania"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5640","DOI":"10.1007\/s12011-023-03631-1","article-title":"The Role of Zinc in Bone Tissue Health and Regeneration\u2014A Review","volume":"201","author":"Molenda","year":"2023","journal-title":"Biol. 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