prikaz prve stranice dokumenta Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama
Embargo period 2025-03-22
undergraduate thesis
Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama
završni rad
2022. urn:nbn:hr:167:875646
Jurišić, Marta
University of Split
Faculty of Chemistry and Technology
Division of Chemistry

Cite this document

Jurišić, M. (2022). Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:875646

Jurišić, Marta. "Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:875646

Jurišić, Marta. "Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2022. https://urn.nsk.hr/urn:nbn:hr:167:875646

Jurišić, M. (2022). 'Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 09 December 2024, https://urn.nsk.hr/urn:nbn:hr:167:875646

Jurišić M. Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2022 [cited 2024 December 09] Available at: https://urn.nsk.hr/urn:nbn:hr:167:875646

M. Jurišić, "Utjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:167:875646

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Metadata
TitleUtjecaj pH na koroziju željeza u kiselim perkloratnim otopinama : završni rad
Title (english)pH influence on iron corrosion in acidic perchloric solutions : bachelor thesis
AuthorMarta Jurišić
MentorSlobodan Brinić (mentor)
Committee memberMarijo Buzuk (predsjednik povjerenstva)
Committee memberIvana Smoljko (član povjerenstva)
Committee memberSlobodan Brinić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Chemistry)
Split
Defense date and country2022-09-16, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Cilj ovog rada je bio ispitati utjecaj pH na koroziju željeza u perkloratnim otopinama ionske jakosti 0,5 i 0,1 mol/L. Istraživanje je provedeno uz praćenje promjene potencijala otvorenog strujnog kruga s vremenom, elektrokemijskom impedancijskom spektroskopijom na potencijalu otvorenog strujnog kruga i potenciodinamičkom polarizacijom sa sporom promjenom potencijala (0,5 mV/s) u području potencijala ±0,120 V u odnosu na potencijal otvorenog strujnog kruga. Povećanjem pH uz istu ionsku jakost dolazi do smanjenja korozije željeza u otopinama ionske jakosti 0,5 mol / L i u otopinama ionske jakosti 0.1 mol/L. Pri istim pH struje korozije su veće u otopinama ionske jakosti 0,5 mol/L nego u otopinama ionske jakosti 0,1 mol/L. Smanjenjem pH vrijednosti rezultati ovih metoda pokazuju međusobno veće odstupanje koje je posebice značajno u otopinama ionske jakosti 0,5 mol/L. Za ispitivane otopine obje ionske pri pH 0,3; 1 i 2 rezultati ukazuju da je korozija pod aktivacijskom kontrolom, dok je pri pH 3 korozija kontrolirana katodnom difuzijskom strujom.
Abstract (english)
In this study, the effect of pH on iron corrosion in perchlorate solutions with ionic strengths of 0.5 and 0.1 mol/L was investigated. This study was carried out by electrochemical techniques (open circuit potential measurement, potentiodynamic polarisation measurement and electrochemical impedance spectroscopy). In both solutions with an ionic strength of 0.1 mol/L and 0.5 mol/L, raising the pH while maintaining the same ionic strength results in a decrease in iron corrosion. In solutions with an ionic strength of 0.5 mol/L compared to those with an ionic strength of 0.1 mol/L, corrosion currents are higher at the same pH value. The results of these measurements deviate from one another more when the pH value is lowered, which is particularly notable in solutions with an ionic strength of 0.5 mol/L. The results show that corrosion is under activation control for the examined solutions of both ionic solutions at pH 0.3, 1, and 2, however at pH 3, corrosion is controlled by the cathodic diffusion current.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:875646
Study programmeTitle: Protection and Recycling of Materials
Study programme type: professional
Study level: undergraduate
Academic / professional title: stručni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka kemijskog inženjerstva (stručni/a prvostupnik/ prvostupnica (baccalaureus/ baccalaurea) inženjer/ inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
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Embargo expiration date: 2025-03-22
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Created on2023-03-22 07:39:57