ivan zin
@karpenko physico-mechanical institute of national academy of sciences
Corrosion and Corrosion Protection
Leading Researcher
RESEARCH, TEACHING, or OTHER INTERESTS
Materials Science, Electrochemistry, Surfaces, Coatings and Films, Metals and Alloys
Scopus Publications
Scopus Publications
M.-O.M. Danyliak, I.M. Zin, and S.A. Korniy
Elsevier BV
Olha Khlopyk, Sergiy Korniy, Ivan Zin, and Myroslav Holovchuk
Informa UK Limited
O. P. Khlopyk, I. M. Zin, M. B. Tymus, M. Ya. Holovchuk, and O. S. Kalakhan
Springer Science and Business Media LLC
Sergiy Korniy, Ivan Zin, Mariia-Olena Danyliak, Olha Khlopyk, Bohdan Datsko, and Myroslav Holovchuk
Springer Science and Business Media LLC
O. P. Khlopyk, I. M. Zin, B. M. Datsko, L. M. Bilyi, Z. A. Duriagina, and S. A. Korniy
Springer Science and Business Media LLC
Sergiy Korniy, Ivan Zin, Svitlana Halaichak, Bohdan Datsko, Olha Khlopyk, Mariia Olena Danyliak, and Myroslav Holovchuk
Springer Science and Business Media LLC
S. A. Korniy, I. M. Zin, M.-O. M. Danyliak, and Yu.Ya. Rizun
Springer Science and Business Media LLC
L. I. Muravsky, I. M. Zin, L. M. Bilyi, H. I. Haskevych, and O. D. Surjadova
Springer Science and Business Media LLC
S. A. Korniy, I. M. Zin, M.-O. M. Danyliak, O. P. Khlopyk, and B. M. Datsko
Springer Science and Business Media LLC
М. B. Tymus, І. М. Zin, О. P. Khlopyk, V. І. Pokhmurskii, М. Ya. Holovchuk, and S. А. Korniy
Springer Science and Business Media LLC
S. A. Korniy, I. M. Zin, M. B. Tymus, O. P. Khlopyk, and M. Ya. Holovchuk
Springer Science and Business Media LLC
Mariia Olena Danyliak, Ivan Zin, Yuliia Rizun, and Sergiy Korniy
Hindawi Limited
In this work we investigated the inhibiting effect of sodium citrate, an environmentally safe corrosion inhibitor, on low-alloy steel 09G2S in a neutral environment using electrochemical methods. Potentiodynamic studies showed that sodium citrate reduces corrosion currents of 09G2S steel in a 0.1% NaCl solution and reaches its maximum efficiency at a concentration of 2.5 g/l. Electrochemical impedance spectroscopy results indicate the adsorption of citrate ions and the formation of a protective film, which probably consists of Fe-citrate complexes. The formation of a protective film on the steel surface in sodium citrate-inhibited solutions was confirmed by the results of scanning electron microscopy and EDX analysis. Hence, our research shows that sodium citrate has satisfactory anticorrosion properties and can be used as a basic component during the development of environmentally safe inhibitor compositions for the protection of low-alloyed carbon steels in neutral environments of recirculating water supply systems in petroleum refineries, petrochemical plants, and other industries.
S. A. Korniy, I. M. Zin, O. P. Khlopyk, M. Ya. Holovchuk, M. -O. M. Danyliak, B. M. Datsko, and P. Ya. Lyutyy
Informa UK Limited
ABSTRACT A two-stage synthesis of anti-corrosion pigments based on synthetic zeolites was performed. New pigments retain the zeolite framework structure in the nanopores of which the amorphised phosphate phase is formed. The pigments effectively reduce the aluminium alloy corrosion in sodium chloride solution. The most effective pigment is obtained by mechanochemical modification of zeolite with calcium cations, followed by liquid-phase treatment with zinc nitrate and sodium phosphate. The pigments induce the formation of a protective film of zinc hydroxides on intermetallic inclusions of the alloy. The formation of phosphates is possible on the anode sections. The pigments can become promising inhibitory components of primer paints used for the protection of structures made from aluminium alloys.
S. A. Korniy, І. М. Zin, О. P. Khlopyk, М. B. Tymus, and М. Ya. Holovchuk
Springer Science and Business Media LLC
S. А. Korniy, І. М. Zin, О. P. Khlopyk, М. Ya. Holovchuk, М.-О. М. Danyliak, and S. А. Halaichak
Springer Science and Business Media LLC
Z.V. Slobodyan, I.M. Zin, and S.A. Korniy
National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)
Вступ. Покращення екологічного стану довкілля пов’язано із забезпеченням стабільного протикорозійного захистуметалофонду в хімічній, газо-, нафтодобувній та енергетичній промисловостях. Зокрема, проведення якісного хімічного очищення теплоенергетичного обладнання вимагає застосування ефективних екобезпечних інгібіторів корозії.Проблематика. Проблемі створення екоінгібіторів в Україні приділено недостатньо уваги, хоча наявність рослинної сировини у вигляді відходів харчового, деревообробного та низки інших виробництв дозволяє успішно вирішувати цю проблему.Мета. Розробка нового екологічно безпечного інгібітора на основі екстрактів з рослинної сировини та технології хімічного очищення теплоенергетичного обладнання з його використанням.Матеріали й методи. Вихідною сировиною слугували стружка та тирса дуба; застосовано методи екстракції з використанням водних, органічних та змішаних розчинників, гравіметричний та електрохімічні методи дослідженнязахисних властивостей екстрактів та синергічних композицій на їх основі, методи аналітичної хімії.Результати. Розроблений екоінгібітор є синергічною композицією на основі екстракту дуба з додаванням екобезпечних допоміжних речовин (ксантанову камедь, уротропін, тіосечовину, сегнетову сіль, карбамід, технічний гліцерин та інших) (можна вказати їх перелік). Встановлено, що ефективність інгібітору у 5% хлоридній кислоті становить понад 90%, механізм його захисної дії має змішаний характер і полягає в адсорбції складників синергічної композиції. Інгібітор у складі промивних розчинів не змінює повноту розчинення карбонатних відкладів порівняно знеінгібованим розчином, проте вдвічі зменшує час усунення солей твердості та продуктів корозії з поверхонь теплообміну енергетичного обладнання. Розроблено технологічний регламент і тимчасові технічні умови на його одержання та технологічну інструкцію на проведення кислотно-інгібіторного очищення теплоенергетичного обладнання.Висновки. Отримано дослідну партію екоінгібітору, який пройшов стендову та натурну апробацію, що підтвердили його ефективність у складі промивного розчину
S. А. Korniy, I. М. Zin, M. B. Тymus, O. P. Khlopyk, and M.-O. М. Danyliak
Springer Science and Business Media LLC
M.nO.M. Danyliak, O.P. Khlopyk, I.M. Zin, S.A. Korniy, and M.Ya. Holovchuk
IEEE
Environmentally friendly corrosion inhibitors were obtained by liquid-phase ion exchange modification of zeolite with zinc, calcium and manganese cations. The surface morphology and chemical composition of modified zeolites were determined by scanning electron microscopy and energy dispersion spectroscopy analyzes. It was established that the structure of ion-exchange modified zeolites is homogeneous with a particle size of 2-4 $\\mu \\mathrm{m}$. It was shown that using of modified zeolites increases the corrosion resistance of the aluminum alloy in 0.1% NaCl solution. The Zn-zeolite had highest anti-corrosion effectiveness. Gradual release of the inhibitory components from zeolites provides long-term protection of metal constructions.
I. Zin, S. Korniy, M. Danyliak, O. Khlopyk, M. Ya and Holovchuk
IFHAN
Ecologically safe anti-corrosion pigments based on synthetic zeolite Na-A modified with zinc, calcium and manganese were synthesized using liquid-phase ion exchange. The dispersion of the modified zeolites, their initial chemical composition and changes upon exposure to 0.1% sodium chloride solution were studied by scanning electron microscopy (SEM) and energy-dispersive X-ray microanalysis (EDX). The corrosion resistance of aluminum alloy D16T in 0.1% NaCl solution and in inhibited solutions containing modified zeolites was studied using the methods of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). It was revealed that the use of modified zeolites increases the corrosion resistance of aluminum alloy in the corrosive solution by 2–9 times depending on their concentration and type of metal cation. Electrochemical impedance spectroscopy showed that the presence of modified Zn-zeolite at a concentration of 2 g/l in the corrosive solution increases the charge transfer resistance of the sample of aluminum alloy by about 5 times. The greatest anti-corrosion effect on the aluminum alloy is provided by the zeolite modified with Zn 2+ , while the smallest, by the zeolite modified with Ca 2+ , due to the different ability of these divalent cations to desorb from the zeolite into the corrosive environment. It was found that the anticorrosive effect on the aluminum alloy D16T in an inhibited solution with Zn-zeolite is due to the formation of continuous oxide-hydroxide layers in the vicinity of intermetallic inclusions on its surface. The chemical analysis of modified zeolites after 96 h of exposure to aluminum alloy D16T in solutions with a concentration of 2 g/l confirms the preservation of the aluminosilicate skeleton of zeolite and indicates slow ion exchange of divalent cations of calcium, zinc and manganese for sodium cations from corrosion solution. The obtained modified zeolites have the potential to be used for the development of “smart coating” technologies for corrosion protection of aluminum alloys. which are known to be the cathode regions of the alloy. Significant zinc content was detected in section and almost complete absence of components of intermetallic inclusions (copper, magnesium and manganese) was seen on the energy dispersion spectrum, which indicates the formation of a continuous film of zinc hydroxide, complete blocking of cathode sections of the alloy and deceleration of corrosion processes. Upon alloy exposure to the solution with modified Ca-zeolite, non-dense products and increased content of copper and manganese are observed on its surface, which indicates direct contact of the corrosion solution with the cathodic inclusions. On the other hand, some products containing manganese, possibly as manganese hydroxides, are observed on the alloy surface in the vicinity of cathodic inclusions after exposure to the solution containing Mn-zeolite . They do not completely cover the intermetallics surface, but partially block the cathodic reactions. These data may explain the results of electrochemical spectroscopy regarding corrosion resistance of aluminum alloy in extracts containing zeolites modified with manganese.
M.-O.М. Danyliak, , I.М. Zin, O.P. Khlopyk, M.Ya. Holovchuk, S.А. Korniy, , , , ,et al.
SHEI Ukrainian State University of Chemical Technology
The anticorrosion environmentally friendly pigments based on synthetic zeolite for paint coatings were obtained by liquid-phase ion exchange method. Zeolite was modified with zinc, calcium and manganese ions. The corrosion resistance of 09G2C steel in 0.1% NaCl solution and in suspensions of modified zeolite was investigated by potentiodynamic polarization method. It was shown that the use of zeolite modified with cations of divalent metals contributes to the reduction of corrosion currents. It was found that the zeolite modified with zinc cations exhibits the most anticorrosion effect relative to 09G2C steel, as indicated by the values of corrosion currents (which are ~2 times smaller than in the non-inhibited solution) and the results of electrochemical impedance spectroscopy. The surface morphology of 09G2S steel after exposure to the inhibited media was determined by scanning electron microscopy. Protection mechanism of the modified zeolite was suggested.
I. Zin, S. Korniy, A. Kytsya, L. Kwiatkowski, P. Lyutyy and Ya. І. Zin’
IFHAN
We developed a complex anti-corrosion pigment based on Ca-ion exchanged nanoporous zeolite powder with deposited zinc phosphate layer. The pigment contains composite fragments as well as individual particles of zinc phosphate. Potentiodynamic polarization studies of the D16T alloy in artificial acid rain revealed that the complex pigment is superior to commercial zinc phosphate and Ca-ion exchanged zeolite. The complex pigment is characterized by cathodic control of aluminum alloy corrosion at the beginning, changing to anodic control after two days of exposure to the corrosion solution due to the formation of a corrosion-resistant film. It was established by electrochemical impedance spectroscopy that the pigment significantly increases charge transfer resistance of aluminium alloy surface in the vicinity of through defect in inhibited paint exposed to an acid rain solution. The anti-corrosion effectiveness of this inhibitor in the coating is higher than zinc phosphate pigment Novinox PZ02 used for alkyd systems. The phase angle frequency dependence of aluminum alloy indicates the formation of a corrosion-resistant film on the metal under the defect of the coating inhibited with the complex zeolite/phosphate pigment. Ion-modified zeolites and their complex pigments with zinc phosphate are promising ecologically safe inhibiting components of paint coatings for anti-corrosion protection of aluminium alloy structures under industrial atmosphere conditions.
S.А. Korniy, , I.М. Zin, M.-O.М. Danyliak, O.P. Khlopyk, V.S. Protsenko, L.M. Bilyi, M.Ya. Holovchuk, Ya.I. Zin, ,et al.
SHEI Ukrainian State University of Chemical Technology
The anticorrosion environmentally friendly pigments based on synthetic zeolite and zinc and calcium phosphates were prepared by mechanochemical method. The surface morphology and chemical composition of the obtained pigments were determined by scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively. It was established that the modification of zeolite by phosphates of divalent metals causes a decrease in the particle size and an increase in the specific surface area of the obtained composite pigments. It was shown that the use of zeolite/phosphate pigments increases the corrosion resistance of the aluminium alloy in 0.1% aqueous NaCl solution. The addition of complex zeolite/phosphate pigments to the sodium chloride solution decelerates the anodic process of electrochemical corrosion, which indicates the formation of a protective film on the metal surface. The composite pigment zeolite/Zn(H2PO4)2 exhibited the highest anticorrosive effect. A gradual release of the inhibitory components from these environmentally friendly pigments provides their long-term action to protect metal products.
I. M. Zin, S. A. Kornii, A. R. Kytsya, L. M. Bilyi, M.-O. M. Danylyak, and P. Ya. Lyutyi
Springer Science and Business Media LLC
І. М. Zin’, V. І. Pokhmurs’kyi, О. P. Khlopyk, О. V. Karpenko, Т. Ya. Pokyn’broda, S. А. Kornii, and М. B. Tymus’
Springer Science and Business Media LLC
V. І. Pokhmurs’kyi, І. М. Zin’, М. B. Tymus’, S. А. Kornii, О. V. Karpenko, О. P. Khlopyk, and N. І. Korets’ka
Springer Science and Business Media LLC