Kinetics of the reaction of hydrogen evolution on steel in inhibited phosphoric acid solutions
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| 1. | Title | Title of document | Kinetics of the reaction of hydrogen evolution on steel in inhibited phosphoric acid solutions |
| 2. | Creator | Author's name, affiliation, country | Ya. G. Avdeev; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | T. A. Nenasheva; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. Yu. Luchkin; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. V. Panova; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | A. I. Marshakov; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 2. | Creator | Author's name, affiliation, country | Yu. I. Kuznetsov; Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; Russian Federation |
| 3. | Subject | Discipline(s) | |
| 3. | Subject | Keyword(s) | acid corrosion; corrosion inhibitors; hydrogen permeation into metal; triazole; low-carbon steel; high-strength steel; phosphoric acid |
| 4. | Description | Abstract | The kinetics was studied and the constants of the main stages of hydrogen separation and incorporation into steel in a solution of phosphoric acid containing a mixture of 1,2,4 triazole derivative IFKhAN-92 and KNCS were determined. The addition of IFKhAN-92 + KNCS mixture inhibits the reaction of cathodic reduction of hydrogen and its penetration into steel in H3PO4 solution. The inhibitory effect of this mixture is due to a decrease in the ratio of the hydrogen concentration in the metal phase to the degree of hydrogen filling of the surface. The decrease in the hydrogen concentration in the metal volume by the IFKhAN-92 + KNCS mixture determines the preservation of the plastic properties of steel during corrosion in H3PO4 solutions. The high efficiency of the IFKhAN-92 + KNCS composition, as inhibitors of cathodic reduction of hydrogen and its absorption, is the result of chemisorption of the organic component of the mixture on the surface of steel and the formation of a polymolecular protective layer. |
| 5. | Publisher | Organizing agency, location | The Russian Academy of Sciences |
| 6. | Contributor | Sponsor(s) |
Ministry of Science and Higher Education of the Russian Federation |
| 7. | Date | (DD-MM-YYYY) | 18.04.2025 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | Research Article |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | https://vietnamjournal.ru/0207-401X/article/view/679465 |
| 10. | Identifier | Digital Object Identifier (DOI) | 10.31857/S0207401X25030023 |
| 11. | Source | Title; vol., no. (year) | Himičeskaâ fizika; Vol 44, No 3 (2025) |
| 12. | Language | English=en | ru |
| 13. | Relation | Supp. Files |
Fig. 1. Cathodic polarization curves on steel (1–4) and the dependence of the rate of hydrogen incorporation into it on the potential (1´–4´) in a 2M H3PO4 solution without additives (1, 1´) and in the same solution containing 5 mM IFKhAN-92 (2, 2´), 5 mM IFKhAN-92 + 0.5 mM KNCS (3, 3´), KNCS (4, 4´). (73KB) Fig. 2. Anodic polarization curves on steel in a 2M H3PO4 solution without additives (1) and in the same solution containing 5 mM IFHAN-92 (2), 5 mM IFHAN-92 + 0.5 mM KNCS (3), 0.5 mM KNCS (4). (54KB) Fig. 3. Equivalent electrical circuit and Nyquist diagrams of a steel electrode in a 2M H3PO4 solution (1), taken after introducing 5 μM IFKhAN-92 + 0.5 mM KNCS (2, 3) into the solution with different holding times (in min): 2 – 30, 3 – 60. (86KB) Fig. 4. Adsorption isotherm of the mixture of IFHAN-92 inhibitors + 0.5 mM KNCS on low-carbon steel (E = –0.30 B) from a 2M H3PO4 solution: dots are the experimental dependence, straight line is the theoretical dependence constructed for the Temkin isotherm. (51KB) Fig. 5. XPS spectra of Fe(2p3/2) and Fe(2p1/2) electrons of the steel surface in a 2M H3PO4 solution containing IFKhAN-92 + KNCS. (79KB) Fig. 6. XPS spectra of O(1s) electrons of the steel surface in a 2M solution of H3PO4 + 5 mM IFKhAN-92 + 0.5 mM KNCS. (63KB) Fig. 7. XPS spectra of N(1s) electrons of the steel surface in a 2M solution of H3PO4 + 5 mM IFKhAN-92 + 0.5 mM KNCS. (63KB) Fig. 8. Proposed scheme of the structure of the protective layer of the IFHAN-92 inhibitor formed on steel in a 2M solution of H3PO4 + 5 mM IFHAN-92 + 0.5 mM KNCS. (135KB) |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
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