COMPARATIVE ANALYSIS OF THE PROTECTIVE PROPERTIES OF TIC-NICR-AL, TIC-NICR-ALY, AND TIC-NICR COATINGS ON STEEL 3 IN A CARBON ACID ENVIRONMENT
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazanskiy nacional'nyy issledovatel'skiy tehnologicheskiy universitet
2.
KNITU
3.
Peoples’ Friendship University of Russia
Institut strukturnoy makrokinetiki i problem materialovedeniya Rossiyskoy akademii nauk
Institut strukturnoy makrokinetiki i problem materialovedeniya Rossiyskoy akademii nauk
4.
Peoples’ Friendship University of Russia
Institut strukturnoy makrokinetiki i problem materialovedeniya Rossiyskoy akademii nauk
Institut strukturnoy makrokinetiki i problem materialovedeniya Rossiyskoy akademii nauk
Type:
Article
Pages:
from 100
to 104
Status:
Published
Received:
27.01.2026
Accepted:
08.02.2026
Published:
26.02.2026
Language:
Russian
Keywords:
SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS (SHS), CARBON DIOXIDE CORROSION, PROTECTIVE COATINGS, LOW CARBON STEEL, TITANIUM CARBIDE, CORROSION RESISTANCE, POTENTIODYNAMIC POLARIZATION, YTTRIUM, ALLOYING ELEMENT, COMPOSITE MATERIALS, OIL AND GAS INDUSTRY
Abstract:
The article presents the results of a study of the protective properties of composite coatings based on modified titanium carbide for protecting low-carbon steel 3 from carbon dioxide corrosion. The object of the study is samples of steel 3 with TiC-NiCr-Al, TiC-NiCr-AlY, and TiC-NiCr coatings. The research methodology included potentiodynamic polarization of the samples using a P-2X potentiostat-galvanostat and a three-electrode cell. The corrosive environment was simulated with a solution consisting of NaCl (20 g/dm³), NaHCO₃ (1 g/dm³), CaCl₂·2H₂O (1.2 g/dm³), acetic acid (1 g/dm³), and Trilon B (21 g/dm³), which was saturated with CO₂ for 1 hour. During the experiments, it was found that the TiC-NiCr-AlY coating demonstrates the highest protection efficiency among the studied coatings, reaching 80.1% at a corrosion current density of 0.0079 mA/cm², which is five times lower than that of uncoated St3 steel (0.0398 mA/cm²). The TiC-NiCr-Al and TiC-NiCr coatings demonstrated a significantly lower protection efficiency of 36.9% and 20.6%, respectively. It was found that the high protective capacity of the TiC-NiCr-AlY coating is due to the synergistic effect of the TiC carbide matrix and the Al₂O₃ oxide layer, which is additionally doped with yttrium. The practical significance of the work lies in substantiating the possibility of using the TiC-NiCr-AlY coating to protect equipment in the oil and gas industry in environments with high CO₂ content, which can increase the service life of metal structures. The results obtained can be used in the development of new protective coatings for use in aggressive environments.
The article presents the results of a study of the protective properties of composite coatings based on modified titanium carbide for protecting low-carbon steel 3 from carbon dioxide corrosion. The object of the study is samples of steel 3 with TiC-NiCr-Al, TiC-NiCr-AlY, and TiC-NiCr coatings. The research methodology included potentiodynamic polarization of the samples using a P-2X potentiostat-galvanostat and a three-electrode cell. The corrosive environment was simulated with a solution consisting of NaCl (20 g/dm³), NaHCO₃ (1 g/dm³), CaCl₂·2H₂O (1.2 g/dm³), acetic acid (1 g/dm³), and Trilon B (21 g/dm³), which was saturated with CO₂ for 1 hour. During the experiments, it was found that the TiC-NiCr-AlY coating demonstrates the highest protection efficiency among the studied coatings, reaching 80.1% at a corrosion current density of 0.0079 mA/cm², which is five times lower than that of uncoated St3 steel (0.0398 mA/cm²). The TiC-NiCr-Al and TiC-NiCr coatings demonstrated a significantly lower protection efficiency of 36.9% and 20.6%, respectively. It was found that the high protective capacity of the TiC-NiCr-AlY coating is due to the synergistic effect of the TiC carbide matrix and the Al₂O₃ oxide layer, which is additionally doped with yttrium. The practical significance of the work lies in substantiating the possibility of using the TiC-NiCr-AlY coating to protect equipment in the oil and gas industry in environments with high CO₂ content, which can increase the service life of metal structures. The results obtained can be used in the development of new protective coatings for use in aggressive environments.
Keywords:
SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS (SHS), CARBON DIOXIDE CORROSION, PROTECTIVE COATINGS, LOW CARBON STEEL, TITANIUM CARBIDE, CORROSION RESISTANCE, POTENTIODYNAMIC POLARIZATION, YTTRIUM, ALLOYING ELEMENT, COMPOSITE MATERIALS, OIL AND GAS INDUSTRY
SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS (SHS), CARBON DIOXIDE CORROSION, PROTECTIVE COATINGS, LOW CARBON STEEL, TITANIUM CARBIDE, CORROSION RESISTANCE, POTENTIODYNAMIC POLARIZATION, YTTRIUM, ALLOYING ELEMENT, COMPOSITE MATERIALS, OIL AND GAS INDUSTRY
