Tribological and Anticorrosion Behavior of Coating Systems Based on Polyurethane and Organic Silicon Compounds

• Published in: Protection of metals and physical chemistry of surfaces Vol. 57; no. 5; pp. 1034 - 1039
• Main Authors: Salamianski, A. E., Agabekov, V. E., Chishankov, I. G., Matveenko, Y. V., Melnikova, G. B., Nguyen, Thuy Duong, Vu, Ke Oanh, Pham, Gia Vu, Trinh, Anh Truc, Tran, Dai Lam, To, Thi Xuan Hang
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2021; Springer Nature B.V
• Subjects: Carbon steels; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coatings; Coefficient of friction; Contact angle; Corrosion and Coatings; Corrosion prevention; Corrosion resistance; Corrosion resistant steels; Corrosion tests; Electrochemical impedance spectroscopy; Friction reduction; Galvanic corrosion; Hydrophobicity; Industrial Chemistry/Chemical Engineering; Inorganic Chemistry; Materials; Materials Science; Metallic Materials; New Substances; Oligomers; Organic compounds; Organosilicon compounds; Polyurethane resins; Protective coatings; Silicon compounds; Spin coating; Tribology; Wear resistance; Wettability; polyurethane coating; hydrophobicity; tribological behavior; corrosion protection; oligomethylsiloxane resin; fluorosilane
• ISSN: 2070-2051; 2070-206X
• DOI: 10.1134/S2070205121050233

Coating systems based on polyurethane (PU) coatings and coatings of oligomethylsiloxane resin (OMES) or oligomers of hydrolyzed heptadecafluorotetrahydrodecyltrimethoxysilane (HFS) were applied on carbon steel by the spin coating method. Wettability and tribologicalproperties of coating systems were determined by contact angle measurement and tribotechnical test. Corrosion resistance of coated carbon steels was investigated by electrochemical impedance spectroscopy. It was noted that the modification of the PU layer with silicon organic compounds increased its hydrophobicity and wear resistance. The water contact angles were 63.1° for PU coating alone, 81.2° for PU/OMES system and 115.8° for PU/HFS system. The modification of polyurethane coating with OMES reduced its friction coefficient from 0.14 to 0.04. Corrosion resistance of PU coatings was not improved with presence of OMES layer but significantly enhanced with presence of HFS layer.