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undergraduate thesis
Utjecaj temperature na pasivaciju aluminija
završni rad
2020. urn:nbn:hr:167:894889
Horozović, Melinda
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Horozović, M. (2020). Utjecaj temperature na pasivaciju aluminija : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:894889

Horozović, Melinda. "Utjecaj temperature na pasivaciju aluminija : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:167:894889

Horozović, Melinda. "Utjecaj temperature na pasivaciju aluminija : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2020. https://urn.nsk.hr/urn:nbn:hr:167:894889

Horozović, M. (2020). 'Utjecaj temperature na pasivaciju aluminija : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 30 October 2024, https://urn.nsk.hr/urn:nbn:hr:167:894889

Horozović M. Utjecaj temperature na pasivaciju aluminija : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2020 [cited 2024 October 30] Available at: https://urn.nsk.hr/urn:nbn:hr:167:894889

M. Horozović, "Utjecaj temperature na pasivaciju aluminija : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2020. Available at: https://urn.nsk.hr/urn:nbn:hr:167:894889

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Metadata
TitleUtjecaj temperature na pasivaciju aluminija : završni rad
Title (english)Influence of temperature on aluminium passivation : bachelor thesis
AuthorMelinda Horozović
MentorSenka Gudić (mentor)
Committee memberLadislav Vrsalović (predsjednik povjerenstva)
Committee memberMario Nikola Mužek (član povjerenstva)
Committee memberSenka Gudić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2020-09-22, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Primjenom galvanostatske pulsne metode ispitani su mehanizam i kinetika rasta oksidnih filmova na aluminiju u otopini boratnog pufera (pH 7.8) različitih temperatura (10, 20 i 30 o C). Ustanovljeno je da se rast oksidnog filma na aluminiju odvija ionskom vodljivošću pod utjecajem jakog električnog polja kroz oksidni film, prema eksponencijalnom zakonu za ventilne metale (mehanizam “aproksimacije visokog polja”). Određeni su elektrokinetički parametri rasta oksidnog filma, ionska vodljivost i poluširina barijere, a dobivene vrijednosti opadaju s porastom temperature elektrolita. Nadalje, dobivene vrijednosti električnog polja, reda veličine MV cm -1 , opravdavaju primjenu modela “aproksimacije visokog polja” pri opisivanju rasta oksidnih filmova na aluminiju u otopini boratnog pufera različitih temperatura. Jakost električnog polja opada s porastom temperature.
Abstract (english)
The mechanism and kinetics of growth of oxide films on aluminum in borate buffer solution (pH 7.8) of different temperatures (10, 20 and 30 o C) were investigated using the galvanostatic pulse method. It has been found that the growth of oxide film on aluminum takes place due to ionic conductivity under the influence of the high electric field through the oxide film according to an exponential law like on valve metals (“high field approximation” mechanism). Electrokinetic parameters of oxide film growth, ionic conductivity and half barrier width were determined, and the obtained values decreased with increasing electrolyte temperature. Furthermore, the values obtained for the electric field, of the order of magnitude of MV cm −1 , justify the application of the “high field approximation” mechanism to describe oxide film growth on aluminum in the borate buffer solution at different temperatures. The electric field strength decreases with increasing the temperature.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:894889
Study programmeTitle: Chemical Technology; specializations in: Chemical Engineering, Environmental Protection
Course: Chemical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka kemijskog inženjerstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2020-10-30 11:37:02