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undergraduate thesis
Korozijska zaštita kositra modifikacijom površine masnim kiselinama
završni rad
2018. urn:nbn:hr:167:678408
Lukin, Anđela
University of Split
Faculty of Chemistry and Technology
Division of Chemistry

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Lukin, A. (2018). Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:678408

Lukin, Anđela. "Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:678408

Lukin, Anđela. "Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:678408

Lukin, A. (2018). 'Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:678408

Lukin A. Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:678408

A. Lukin, "Korozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:678408

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Metadata
TitleKorozijska zaštita kositra modifikacijom površine masnim kiselinama : završni rad
Title (english)Corrosion protection of tin by surface modification with fatty acids : bachelor thesis
AuthorAnđela Lukin
MentorIvana Škugor Rončević (mentor)
Committee memberFranko Burčul (predsjednik povjerenstva)
Committee memberIvana Smoljko (član povjerenstva)
Committee memberIvana Škugor Rončević (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Chemistry)
Split
Defense date and country2018-09-28, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
U radu su prikazani rezultati ispitivanja utjecaja 1 mmol/dm 3 otopina palmitinske i stearinske kiseline (aditiva) na korozijsko ponašanje elektrode od kositra. Više masne kiseline, kao potencijalni inhibitori korozije, nanesene su pomoću metode urona te dip - coating metodom. Ispitivanja su provedena u 0,5 mol/dm 3 otopina NaCl. Elektrokemijska ispitivanja izvršena su mjerenjem potencijala otvorenog strujnog kruga, cikličke voltametrije, linearne kvazi - potenciostatske polarizacije i elektrokemijske impedancijske spektroskopije. Prije elektrokemijskih mjerenja, površinu elektrode smo analizirali optičkim mikroskopom te FTIR spektroskopijom. Rezultati, nakon elektrokemijskih ispitivanja, su pokazali da porastom broja ciklusa nanošenja aditiva dip - coating metodom te nanošenjem aditiva metodom urona dolazi do snižavanja vrijednosti gustoće korozijske struje i povećanja polarizacijskog otpora što ukazuje na inhibicijsko djelovanje korištenih aditiva na koroziju kositra. Korištenjem FTIR spektroskopije i optičkog mikroskopa potvrđeno je postojanje zaštitnog filma masne kiseline na površini elektrode od kositra.
Abstract (english)
This thesis presents results of the research on influence of 1 mmol/dm 3 palmitic and stearic acid on corrosion behavior of tin electrode. Fatty acids, which were used as potential inhibitors, were applied using the immersion method and dip - coating method. Tests were conducted in electrolyte 0,5 mol/dm 3 NaCl solution. Electrochemical tests were performed by the open circuit potential measurements, cyclic voltammetry, linear quasi potentiostatic polarization and electrochemical impedance spectroscopy measurements. Before electrochemical measurements, the surface of the electrode was analysed by optical microscope and FTIR spectroscopy. The results of electrochemical measurements have shown that by increasing the number of additive application cycles with dip - coating method and application of the additive by the immersion method lead to decrease of the value of the corrosion current density and the increased of the polarization resistance, which indicated the inhibitory effect of used additives on the corrosion of tin. The existence of protective fatty acid film on the surface of the tin electrode was confirmed using the FTIR spectroscopy and optical microscope.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:678408
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteKljučne riječi doradio knjižničar/ Key words are revised by the librarian
Created on2019-02-04 10:44:43