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master's thesis
Inhibicija korozije bakra netoksičnim prirodnim spojevima
diplomski rad
2021. urn:nbn:hr:167:064520
Hrepić, Antea
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Hrepić, A. (2021). Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:064520

Hrepić, Antea. "Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:064520

Hrepić, Antea. "Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:064520

Hrepić, A. (2021). 'Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 21 January 2025, https://urn.nsk.hr/urn:nbn:hr:167:064520

Hrepić A. Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2025 January 21] Available at: https://urn.nsk.hr/urn:nbn:hr:167:064520

A. Hrepić, "Inhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:064520

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Metadata
TitleInhibicija korozije bakra netoksičnim prirodnim spojevima : diplomski rad
Title (english)Corrosion inhibition of copper by non-toxic natural compounds : diploma thesis
AuthorAntea Hrepić
MentorIvana Smoljko (mentor)
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberMarija Ćosić (član povjerenstva)
Committee memberIvana Smoljko (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2021-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U ovom radu ispitana je mogućnost primjene želatine te smjese želatine i alge Padina pavonica kao netoksičnih zaštitnih prevlaka bakra u 0,5 mol dm –3 otopini NaCl pri različitim temperaturama. Prirodni netoksični spojevi naneseni su na površinu bakra sol-gel postupkom uranjanjem. Istraživanja su provedena elektrokemijskim metodama (metoda mjerenja potencijala otvorenog kruga, metoda linearne polarizacije i potenciodinamička polarizacijska metoda), dok je površina ispitivanog materijala analizirana pomoću optičkog mikroskopa. Analize pokazuju kako prevlaka želatine smanjuje brzinu korozije bakra u ispitivanoj otopini, dok prevlaka želatine i Padina pavonica ima veći antikorozivni učinak od sume njihovih pojedinačnih djelovanja, tj. povećava stupanj inhibicije bakra u otopini kloridnih iona. Navedeno je posebno naglašeno kod prevlake želatine i alge masene koncentracije 0,8 g dm –3 , gdje je postignuta inhibicija korozije preko 90 %. Dobiveni rezultati pokazuju kako je smjesa želatine i Padina pavonica mješoviti inhibitor, a veća zaštita bakra u ispitivanim uvjetima može se objasniti sinergizmom ispitivanih netoksičnih organskih spojeva.
Abstract (english)
The possibility of using gelatine and a mixture of gelatine and alga Padina pavonica as non-toxic protective coatings of copper in 0.5 mol dm –3 NaCl solution at different temperatures was studied in the present work. Natural non-toxic compounds were deposited on the copper surface by the dip-coating method. This study was carried out by electrochemical techniques (open circuit potential measurement, linear polarisation, and potentiodynamic polarisation measurement), while the specimen’s surface was examined using optical microscope. Analyses show that the gelatine coating reduces the corrosion rate of copper in the test solution, while the gelatine and Padina pavonica coating have a greater anticorrosive effect than the sum of their individual actions, ie. increases the degree of inhibition of copper in chloride ion solution. This is especially emphasized in the coating of gelatine and alga with a mass concentration of 0.8 g dm –3 , whereby corrosion inhibition of over 90% is achieved. The results obtained showed that the mixture of gelatine and Padina pavonica is a mixed inhibitor, and the higher protection of copper under the tested conditions can be explained by the synergism of the tested non-toxic organic compounds.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:064520
Study programmeTitle: Chemistry; specializations in: Environmental Protection, Organic Chemistry and Biochemistry
Course: Environmental Protection
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra kemije (magistar/magistra kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Embargo expiration date: 2024-01-14
Terms of useLicence In copyright icon
Created on2022-01-14 10:13:52