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Information × Registration Number 0217U000216, 0112U002777 , R & D reports Title Development of technology of corrosion protection and corrosive-mechanical destruction of metalokonstrukciy in sulphuretted hydrogen environments popup.stage_title Head Khoma Myroslav, Dzhala Roman, Registration Date 31-01-2017 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Investigation object - steel protection from corrosion in hydrogen sulphide environments, coating on the basis zinc and aluminum, epoxy and polyurethane paints, corrosion protection control. The aim of research - rationale for the choice of methods, for increase the corrosion durability of steel under the action of hydrogen sulfide environments, mechanical stresses and establishment of boundary conditions and parameters of corrosion protection for safe operation elements hydroconstructions the shelf of Black Sea . Investigation methods - gravimetry, linear voltammetry, corrosion, mechanical, metallography, electrophysical. To protect against corrosion of steel in hydrogen sulfide environments more efficient use of aluminum coatings electrometallurgy than zinc. Its reduces corrosion rate ~ 2.5 times and raises strength to sulfide stress cracking~ 20 ... 30% compared to the yield point. Combined coating with electrometallizating aluminum Jotamastic 87GF (Norway) or Vimpel® epoxy SF mastic (Ukraine) increase the threshold voltage of destruction on ~ 40 ... 50%, which fully ensures the efficiency of metal structures in environments with presence of hydrogen sulphide. New graphical-analytical method for determining the maximum amount of damage in the coating of the anodic type on the basis of electrochemical studies of galvanic couples was developed. Mathematical model to describe the electro-physical processes in the boundary of the metal with the environment under mechanical stresses and determining the energy characteristics of the interfacial layer with the use of non-equilibrium thermodynamics and surface physics was constructed. Bond of electrode potential with the concentration of adsorbed hydrogen sulfide was established. Changes in the specific polarizability of steel 20 be under the influence of hydrogen sulfide corrosion in the vicinity of point crack tip cavity was estimated. Circuits of hardware for subsea pipeline surveys was developed. Sensor of the electric field and device the electric voltage measuring and the polarizing potential of VEP to control insulating covers and cathodic protection was developed. Recommendations and technological regulations with use of composite coatings for corrosion protection of steel structures by hydrogen sulfide corrosion was developed. Product Description popup.authors Івашків Василь Романович Антощак Ігор Миколайович Вербенець Богдан Ярославович Головей Світлана Анатоліївна Дацко Богдан Миколайович Дячук Алла Іллівна Мельник Мар'ян Ігорович Підгірняк Ярослав Євстахович Семенюк Оксана Миколаївна Червінка Людмила Євгенівна Червінка Орест Олександрович Чумало Галина Василівна Чучман Мар'ян Романович Юзевич Володимир Миколайович popup.nrat_date 2020-04-02 Close