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Licensed Unlicensed Requires Authentication Published by De Gruyter November 29, 2022

Influence of acidic media and chlorides on protective properties of epoxy coatings

  • Vesna Alar

    Vesna Alar was born on 24 December 1966. She graduated at the Faculty of Chemical Engineering and Technology University of Zagreb in 1991. Since 1991 she has been working at the Department of Materials of the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb. In 1994 she acquired the Master’s degree at the Faculty of Chemical Engineering and Technology and the Doctor’s degree in 2000 at the Faculty of Mechanical Engineering and Naval Architecture in Zagreb. Her scientific work includes research in the field of corrosion and protection metals.

    , Ivan Stojanović

    Ivan Stojanović was born on 9 June 1979 in Pula. He graduated at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb in 2003. Since 2004 he has been working as researcher at the Chair of Materials Protection at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb. In January 2011, he successfully defended his PhD thesis on the topic “Influence of Technological Parameters on Corrosion Protection Properties of Waterborne Coatings”. His scientific work includes research in the field of corrosion and coating protection of metals.

    , Vinko Šimunović

    Vinko Šimunović was born on 7 November 1970. in Zagreb. He graduated from the University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture in 1999. Since 2000 he has been working as assistant at the Chair of Materials Protection at the Faculty of Mechanical Engineering in Zagreb. He is a researcher in the field of corrosion resistance of stainless steels and in 2012. he defended his PhD thesis on topic “Microbiologically influenced corrosion of stainless steel welded joints in water”.

    , Marin Kurtela

    Marin Kurtela was born in Zagreb in 1981. He finished elementary and high school in Dubrovnik, and after his secondary education he enrolled in the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb. He received the academic title of Master of Aeronautical Engineering in 2010. In Jane 2021, he successfully defended his Ph.D. thesis on the topic “Influence of cerium ions on the corrosion properties of aluminium alloy in chloride medium”. His scientific research interests include improving the efficiency of environmentally friendly technology systems to protect aluminium and aluminium alloys as well as those obtained by the method of wire arc additive manufacturing (WAAM).

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    , Marina Samardžija

    Marina Samardžija was born in 1988. in Vinkovci. She graduated from the Faculty of Chemical Engineering and Technology, University of Zagreb in September 2015. As a student, she was researching the application of nanofluids in a plate heat exchanger as a topic for her Master theses. After receiving her education, Marina had been working in student laboratory as an assistant for two and a half years. In December 2019, she joined to Faculty of Mining Geology and Petroleum Engineering where she enrolled in a PhD. She is interested in corrosion science and how to reduce influence of corrosion on cast iron with modified epoxy coating. Dalibor Ivaniš graduated from the University of Zagreb, Faculty of Chemical Engineering and Technology. From 2010 to 2019, he worked as quality manager at “Metalska industrija Varaždin”. Since 2019 he has been working as project and quality manager at “Ferro-Preis”.

    and Dalibor Ivaniš
From the journal Materials Testing

Abstract

Organic coatings are used as one of the key surface protection methods to protect cast iron pipelines against corrosion due to their cost efficiency and a variety of applications. In most metallic systems that are protected by organic coatings, the performance depends on the response of the coating to corrosion stresses to which they are exposed during operation. One of the most dangerous factors causing chemical damage to coatings are the acidic and chloride aggressive media. Such damage reduces the protection effectiveness thus leading to blistering, cracking, increase in pore volume and number, as well as loss of adhesion. Moreover, the influence of aggressive media impairs also aesthetic characteristics. In the experimental part of the paper, analyses of the physical and chemical properties of epoxy coatings applied on the metal substrate in phosphoric acid, acetic acid and 3.5 wt% NaCl solutions were carried out. The test results showed that the physical properties of epoxy coatings were satisfactory in the acidic medium, but electrochemical tests in 3.5 wt% NaCl solution showed reduced corrosion protection.


Corresponding author: Marin Kurtela, Chair of Materials Protection, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia, E-mail:

Funding source: Operational Program Competitiveness and Cohesion, from the European Regional Development Fund. KK.01.1.1.07

Award Identifier / Grant number: KK.01.1.1.07.0045

About the authors

Vesna Alar

Vesna Alar was born on 24 December 1966. She graduated at the Faculty of Chemical Engineering and Technology University of Zagreb in 1991. Since 1991 she has been working at the Department of Materials of the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb. In 1994 she acquired the Master’s degree at the Faculty of Chemical Engineering and Technology and the Doctor’s degree in 2000 at the Faculty of Mechanical Engineering and Naval Architecture in Zagreb. Her scientific work includes research in the field of corrosion and protection metals.

Ivan Stojanović

Ivan Stojanović was born on 9 June 1979 in Pula. He graduated at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb in 2003. Since 2004 he has been working as researcher at the Chair of Materials Protection at the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb. In January 2011, he successfully defended his PhD thesis on the topic “Influence of Technological Parameters on Corrosion Protection Properties of Waterborne Coatings”. His scientific work includes research in the field of corrosion and coating protection of metals.

Vinko Šimunović

Vinko Šimunović was born on 7 November 1970. in Zagreb. He graduated from the University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture in 1999. Since 2000 he has been working as assistant at the Chair of Materials Protection at the Faculty of Mechanical Engineering in Zagreb. He is a researcher in the field of corrosion resistance of stainless steels and in 2012. he defended his PhD thesis on topic “Microbiologically influenced corrosion of stainless steel welded joints in water”.

Marin Kurtela

Marin Kurtela was born in Zagreb in 1981. He finished elementary and high school in Dubrovnik, and after his secondary education he enrolled in the Faculty of Mechanical Engineering and Naval Architecture of the University of Zagreb. He received the academic title of Master of Aeronautical Engineering in 2010. In Jane 2021, he successfully defended his Ph.D. thesis on the topic “Influence of cerium ions on the corrosion properties of aluminium alloy in chloride medium”. His scientific research interests include improving the efficiency of environmentally friendly technology systems to protect aluminium and aluminium alloys as well as those obtained by the method of wire arc additive manufacturing (WAAM).

Marina Samardžija

Marina Samardžija was born in 1988. in Vinkovci. She graduated from the Faculty of Chemical Engineering and Technology, University of Zagreb in September 2015. As a student, she was researching the application of nanofluids in a plate heat exchanger as a topic for her Master theses. After receiving her education, Marina had been working in student laboratory as an assistant for two and a half years. In December 2019, she joined to Faculty of Mining Geology and Petroleum Engineering where she enrolled in a PhD. She is interested in corrosion science and how to reduce influence of corrosion on cast iron with modified epoxy coating. Dalibor Ivaniš graduated from the University of Zagreb, Faculty of Chemical Engineering and Technology. From 2010 to 2019, he worked as quality manager at “Metalska industrija Varaždin”. Since 2019 he has been working as project and quality manager at “Ferro-Preis”.

  1. Author Contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: Investigations were performed within the research topic “Development of anti-corrosion protection system for multipurpose pipe use” (Grant number: KK.01.1.1.07.0045). This work was supported by the European Regional Development Fund under the Operational Program Competitiveness and Cohesion 2014–2020.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-11-29
Published in Print: 2022-12-16

© 2022 Walter de Gruyter GmbH, Berlin/Boston

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