Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings
High-entropy alloy (HEA) coatings offer unique advantages for enhancing the surface properties of biomedical implants, including improved wear and corrosion resistance. In this study, Al0.3CrFeCoNi-based HEA coatings were produced by high-speed laser metal deposition (HS-LMD) with the addition of Nb...
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Elsevier
2025-03-01
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| Series: | Applied Surface Science Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666523925000194 |
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| author | Burak Dikici Thomas Lindner Thomas Lampke Thomas Grund Asli Gunay Bulutsuz |
| author_facet | Burak Dikici Thomas Lindner Thomas Lampke Thomas Grund Asli Gunay Bulutsuz |
| author_sort | Burak Dikici |
| collection | DOAJ |
| description | High-entropy alloy (HEA) coatings offer unique advantages for enhancing the surface properties of biomedical implants, including improved wear and corrosion resistance. In this study, Al0.3CrFeCoNi-based HEA coatings were produced by high-speed laser metal deposition (HS-LMD) with the addition of Nb and Mo. The coatings were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). Electrochemical corrosion tests, including potentiodynamic scanning (PDS) and electrochemical impedance spectroscopy (EIS), were conducted using Hanks' solution at body temperature to simulate the body environment. Wear tests were also performed under both dry and in-vitro conditions. Contact angle measurements were performed to assess the surface wettability, which is crucial for understanding the interaction between the coating and biological fluids. The results demonstrated that the Mo-containing coating exhibited superior corrosion and wear performance under in-vitro conditions. This was due to the slower progression of deeper corrosion attacks in unmelted particles, which minimized the micro-galvanic effects associated with the eutectic structures within these particles. Additionally, the coating's stable microstructure and effective formation of a protective passive layer contributed to its enhanced performance. |
| format | Article |
| id | doaj-art-8939bd04e3ba473c80ad5bb87d757005 |
| institution | Kabale University |
| issn | 2666-5239 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Applied Surface Science Advances |
| spelling | doaj-art-8939bd04e3ba473c80ad5bb87d7570052025-02-08T05:01:20ZengElsevierApplied Surface Science Advances2666-52392025-03-0126100710Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatingsBurak Dikici0Thomas Lindner1Thomas Lampke2Thomas Grund3Asli Gunay Bulutsuz4Ataturk University, Department of Mechanical Engineering, Erzurum 25240, Turkey; Chemnitz University of Technology, Department of Materials and Surface Engineering, Chemnitz, 09125, Germany; Corresponding authors.Chemnitz University of Technology, Department of Materials and Surface Engineering, Chemnitz, 09125, GermanyChemnitz University of Technology, Department of Materials and Surface Engineering, Chemnitz, 09125, Germany; Corresponding authors.Chemnitz University of Technology, Department of Materials and Surface Engineering, Chemnitz, 09125, GermanyYildiz Technical University, Department of Mechanical Engineering, Istanbul 34319, TurkeyHigh-entropy alloy (HEA) coatings offer unique advantages for enhancing the surface properties of biomedical implants, including improved wear and corrosion resistance. In this study, Al0.3CrFeCoNi-based HEA coatings were produced by high-speed laser metal deposition (HS-LMD) with the addition of Nb and Mo. The coatings were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). Electrochemical corrosion tests, including potentiodynamic scanning (PDS) and electrochemical impedance spectroscopy (EIS), were conducted using Hanks' solution at body temperature to simulate the body environment. Wear tests were also performed under both dry and in-vitro conditions. Contact angle measurements were performed to assess the surface wettability, which is crucial for understanding the interaction between the coating and biological fluids. The results demonstrated that the Mo-containing coating exhibited superior corrosion and wear performance under in-vitro conditions. This was due to the slower progression of deeper corrosion attacks in unmelted particles, which minimized the micro-galvanic effects associated with the eutectic structures within these particles. Additionally, the coating's stable microstructure and effective formation of a protective passive layer contributed to its enhanced performance.http://www.sciencedirect.com/science/article/pii/S2666523925000194High-entropy coatingsIn-vitro corrosionWearBiomaterialsAl0.3CrFeCoNi |
| spellingShingle | Burak Dikici Thomas Lindner Thomas Lampke Thomas Grund Asli Gunay Bulutsuz Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings Applied Surface Science Advances High-entropy coatings In-vitro corrosion Wear Biomaterials Al0.3CrFeCoNi |
| title | Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings |
| title_full | Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings |
| title_fullStr | Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings |
| title_full_unstemmed | Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings |
| title_short | Effect of Nb0.5 and Mo0.75 addition on in-vitro corrosion and wear resistance of high-speed laser metal deposited Al0.3CrFeCoNi high-entropy alloy coatings |
| title_sort | effect of nb0 5 and mo0 75 addition on in vitro corrosion and wear resistance of high speed laser metal deposited al0 3crfeconi high entropy alloy coatings |
| topic | High-entropy coatings In-vitro corrosion Wear Biomaterials Al0.3CrFeCoNi |
| url | http://www.sciencedirect.com/science/article/pii/S2666523925000194 |
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