| APPLICATION of NEWLY DEVELOPED One- or MULTILAYER COATINGS for CORROSION PROTECTION of STRUCTURAL MATERIALS Nikolai Boshkov1; Irina Stambolova2; Neli Boshkova1; Daniela Stoyanova2; Tsetska Radeva1; Kamelia Kamburova1; Vladimir Blaskov3; 1INSTITUTE OF PHYSICAL CHEMISTRY, BULGARIAN ACADEMY OF SCIENCES, Sofia, Bulgaria; 2INSTITUTE OF GENERAL AND ONORGANIC CHEMISTRY, Sofia, Bulgaria; 3INSTITUTE OF METAL SCIENCE, EQUIPMENT AND TECHNOLOGIES, Sofia, Bulgaria; PAPER: 4/Nanotechnology/Invited (Oral) SCHEDULED: 15:15/Wed. 30 Nov. 2022/Andaman 2 ABSTRACT: This investigation focuses mainly on applied and fundamental research in a very relevant and important area - the corrosion protection of the most widely used metal materials such as structural steels. The latter are often subject to serious corrosion attacks, resulting in a number of economical damages, energy and material losses. The main objective is to create effective protective corrosion-resistant coatings or coating systems of various types on steel by: (1) Forming innovative sol-gel coatings [1] for galvanized steel - doped and /or undoped oxide coatings (single or multi-component), applied sequentially on galvanized steel at different thicknesses of the zinc coating; (2) Obtaining hybrid zinc coatings [2-4] with embedded polymeric based particles or corrosion inhibitors into the metal matrix; and (3) Developing environmentally friendly conversion coatings for galvanized steel [4]. Present investigations demonstrate some general ideas and possibilities for improving the protective properties of the ordinary zinc coatings by applying of materials which are non-toxic and non-harmful to the environment. The experimental techniques and apparatus used to achieve the end goals are: electrochemical methods for characterizing the protective properties (PD curves, polarization resistance - Rp, electrochemical impedance spectroscopy - EIS), XRD analysis, XPS analysis, SEM, TEM, etc. References: REFERNCES: 1. Stambolova I., Dimitrov O., Vassilev S., Yordanov St., Blaskov V., N Boshkov., Shipochka M., “Preparation of newly developed CeO2/ZrO2 multilayers: Effect of the treatment temperature on the structure and corrosion performance of stainless steel”, Journal of Alloys and Compounds, 806, 1357-1367, 2019. 2. Boshkova N., Tabakova N., Atanassova G., Boshkov N., “Electrochemical obtaining and corrosion behavior of Zinc-Polyaniline (Zinc-PANI)hybrid coatings”, Coatings, 9, 8, 487, 2019. 3. Kamburova K., Boshkova N., Boshkov N., Atanassova G., Radeva Ts., “Hybrid zinc coatings for corrosion protection of steel using polyelectrolyte nanocontainers loaded with benzotriazole”, Colloids and Surfaces A, 559, 243-250, 2018. 4. Peshova M., Bachvarov V., Vitkova S., Atanasova G., Boshkov N., “Electrodeposited zinc composite coatings with embedded carbon nanotubes – advanced composite materials for better corrosion protection”, Transactions of IMF, 96, 6, 324-331, 2018. |
