Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches
The purpose of this research is to meet current technical and ecological challenges by developing novel steel coating systems specifically designed for mechanical equipment used in aggressive acid conditions. Homogeneous sandwich-type layered films on the surface of steel electrodes were realized us...
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/7/1118 |
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| author | Mihaela Birdeanu Ion Fratilescu Camelia Epuran Alin Constantin Murariu Gabriel Socol Eugenia Fagadar-Cosma |
| author_facet | Mihaela Birdeanu Ion Fratilescu Camelia Epuran Alin Constantin Murariu Gabriel Socol Eugenia Fagadar-Cosma |
| author_sort | Mihaela Birdeanu |
| collection | DOAJ |
| description | The purpose of this research is to meet current technical and ecological challenges by developing novel steel coating systems specifically designed for mechanical equipment used in aggressive acid conditions. Homogeneous sandwich-type layered films on the surface of steel electrodes were realized using a pseudo-binary oxide, MnTa<sub>2</sub>O<sub>6</sub>, and two different substituted porphyrin derivatives, namely: 5-(4-carboxy-phenyl)-10,15,20-tris (4-methyl-phenyl)-porphyrin and 5-(4-methyl-benzoate)-10,15,20-tris (4-methyl-phenyl)-porphyrin, which are novel investigated compound pairs. Two suitable laser strategies, pulsed laser deposition (PLD) and matrix-assisted pulsed laser evaporation (MAPLE), were applied in order to prevent porphyrin decomposition and to create smooth layers with low porosity that are extremely adherent to the surface of steel. The electrochemical measurements of corrosion-resistant coating performance revealed that in all cases in which the steel electrodes were protected, a significant value of corrosion inhibition efficiency was found, ranging from 65.6 to 83.7%, depending on the nature of the porphyrin and its position in the sandwich layer. The highest value (83.7%) was obtained for the MAPLE/PLD laser deposition of 5-(4-carboxy-phenyl)-10,15,20-tris (4-methyl-phenyl)-porphyrin/MnTa<sub>2</sub>O<sub>6</sub>(h), meaning that the inhibitors adsorbed and blocked the access of the acid to the active sites of the steel electrodes. |
| first_indexed | 2024-03-09T11:34:16Z |
| format | Article |
| id | doaj.art-237975c90133437ca4fd9897a25acae7 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T11:34:16Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-237975c90133437ca4fd9897a25acae72023-11-30T23:44:42ZengMDPI AGNanomaterials2079-49912022-03-01127111810.3390/nano12071118Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type ApproachesMihaela Birdeanu0Ion Fratilescu1Camelia Epuran2Alin Constantin Murariu3Gabriel Socol4Eugenia Fagadar-Cosma5National Institute for Research and Development in Electrochemistry and Condensed Matter, Plautius Andronescu Street 1, 300224 Timisoara, RomaniaInstitute of Chemistry “Coriolan Dragulescu”, Mihai Viteazu Ave. 24, 300223 Timisoara, RomaniaInstitute of Chemistry “Coriolan Dragulescu”, Mihai Viteazu Ave. 24, 300223 Timisoara, RomaniaNational Research & Development Institute for Welding and Material Testing—ISIM, Mihai Viteazu Ave. 30, 300222 Timisoara, RomaniaNational Institute for Laser, Plasma and Radiation Physics, 409 Atomiştilor Street, 077125 Măgurele, RomaniaInstitute of Chemistry “Coriolan Dragulescu”, Mihai Viteazu Ave. 24, 300223 Timisoara, RomaniaThe purpose of this research is to meet current technical and ecological challenges by developing novel steel coating systems specifically designed for mechanical equipment used in aggressive acid conditions. Homogeneous sandwich-type layered films on the surface of steel electrodes were realized using a pseudo-binary oxide, MnTa<sub>2</sub>O<sub>6</sub>, and two different substituted porphyrin derivatives, namely: 5-(4-carboxy-phenyl)-10,15,20-tris (4-methyl-phenyl)-porphyrin and 5-(4-methyl-benzoate)-10,15,20-tris (4-methyl-phenyl)-porphyrin, which are novel investigated compound pairs. Two suitable laser strategies, pulsed laser deposition (PLD) and matrix-assisted pulsed laser evaporation (MAPLE), were applied in order to prevent porphyrin decomposition and to create smooth layers with low porosity that are extremely adherent to the surface of steel. The electrochemical measurements of corrosion-resistant coating performance revealed that in all cases in which the steel electrodes were protected, a significant value of corrosion inhibition efficiency was found, ranging from 65.6 to 83.7%, depending on the nature of the porphyrin and its position in the sandwich layer. The highest value (83.7%) was obtained for the MAPLE/PLD laser deposition of 5-(4-carboxy-phenyl)-10,15,20-tris (4-methyl-phenyl)-porphyrin/MnTa<sub>2</sub>O<sub>6</sub>(h), meaning that the inhibitors adsorbed and blocked the access of the acid to the active sites of the steel electrodes.https://www.mdpi.com/2079-4991/12/7/1118MnTa<sub>2</sub>O<sub>6</sub>porphyrinssandwich thin layersPLD and MAPLE laser depositionAFM and SEM microscopycorrosion measurements |
| spellingShingle | Mihaela Birdeanu Ion Fratilescu Camelia Epuran Alin Constantin Murariu Gabriel Socol Eugenia Fagadar-Cosma Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches Nanomaterials MnTa<sub>2</sub>O<sub>6</sub> porphyrins sandwich thin layers PLD and MAPLE laser deposition AFM and SEM microscopy corrosion measurements |
| title | Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches |
| title_full | Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches |
| title_fullStr | Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches |
| title_full_unstemmed | Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches |
| title_short | Efficient Decrease in Corrosion of Steel in 0.1 M HCl Medium Realized by a Coating with Thin Layers of MnTa<sub>2</sub>O<sub>6</sub> and Porphyrins Using Suitable Laser-Type Approaches |
| title_sort | efficient decrease in corrosion of steel in 0 1 m hcl medium realized by a coating with thin layers of mnta sub 2 sub o sub 6 sub and porphyrins using suitable laser type approaches |
| topic | MnTa<sub>2</sub>O<sub>6</sub> porphyrins sandwich thin layers PLD and MAPLE laser deposition AFM and SEM microscopy corrosion measurements |
| url | https://www.mdpi.com/2079-4991/12/7/1118 |
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