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master's thesis
UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA
diplomski rad
2024. urn:nbn:hr:167:691862
Goreta, Lea
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Goreta, L. (2024). UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:691862

Goreta, Lea. "UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:167:691862

Goreta, Lea. "UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2024. https://urn.nsk.hr/urn:nbn:hr:167:691862

Goreta, L. (2024). 'UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 23 January 2025, https://urn.nsk.hr/urn:nbn:hr:167:691862

Goreta L. UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2024 [cited 2025 January 23] Available at: https://urn.nsk.hr/urn:nbn:hr:167:691862

L. Goreta, "UTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:167:691862

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Metadata
TitleUTJECAJ SALINITETA MORSKE VODE NA KOROZIJSKO PONAŠANJE BAKRA : diplomski rad
Title (english)INFLUENCE OF SEAWATER SALINITY ON THE CORROSION BEHAVIOR OF COPPER : diploma thesis
AuthorLea Goreta
MentorJelena Jakić (mentor)
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberDamir Barbir (član povjerenstva)
Committee memberJelena Jakić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2024-10-28, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U radu je ispitano korozijsko ponašanje bakra u morskim vodama različitog saliniteta tj. bočatoj, morskoj i gorkoj morskoj vodi pri temperaturama 15 °C, 25 °C i 35 °C. Ispitivanja su provedena pod utjecajem gibanja elektrolita koji simulira prirodno kretanje vode pri svim temperaturama. Provedena su elektrokemijska ispitivanja mjerenja potencijala otvorenog strujnog kruga u trajanju od 45 min, te mjerenja linearne i potenciodinamičke polarizacije. Ispitivanja su pokazala da porast temperature kod sva tri prisutna elektrolita ima značajan utjecaj na porast gustoće korozijske struje i smanjenje vrijednosti polarizacijskog otpora, dok je utjecaj na vrijednost korozijskog potencijala gotovo zanemariv. Smanjenje vrijednosti polarizacijskog otpora uzrokuje veću koroziju bakra, a najniže vrijednosti polarizacijskog otpora dobivene su u gorkoj morskoj vodi pri temperaturi 35 °C. Analiza površine uzoraka nakon elektrokemijskih ispitivanja optičkom mikroskopijom i optičkom profilometrijom, potvrdile su rezultate elektrokemijskih mjerenja. SEM/EDS analizom određena je mikrostruktura i elementarni sastav korozijskih produkata na površini uzoraka.
Abstract (english)
The corrosion behavior of copper in seawater with different salinity, i.e. brackish water, seawater and seawater bittern at temperatures of 15 °C, 25 °C and 35 °C, was investigated. The tests were carried out under the influence of the movement of the electrolyte at all temperatures, simulating the natural movement of water. Electrochemical tests were carried out, measuring the open circuit potential over a period of 45 minutes as well as the linear and potentiodynamic polarization. The tests showed that for all three electrolytes present, an increasing in the temperature has a significant effect on the increase in the corrosion current density and the decrease in the value of the polarization resistance, while the effect on the value of the corrosion potential is almost negligible. A decrease in polarization resistance leads to a stronger corrosion of copper, and the lowest polarization resistance values were obtained at a temperature of 35 °C in seawater bittern. The analysis of the surface of the samples after the electrochemical tests using optical microscopy and optical profilometry confirmed the results of the electrochemical measurements. The microstructure and elemental composition of the corrosion products on the surface of the samples were determined by SEM/EDS analysis.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:691862
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures, Materials and Environmental protection
Course: Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2025-01-23 09:14:14