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master's thesis
Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure
diplomski rad
2021. urn:nbn:hr:167:776733
Kvrgić, Dario
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Cite this document

Kvrgić, D. (2021). Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:776733

Kvrgić, Dario. "Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:776733

Kvrgić, Dario. "Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2021. https://urn.nsk.hr/urn:nbn:hr:167:776733

Kvrgić, D. (2021). 'Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 18 April 2024, https://urn.nsk.hr/urn:nbn:hr:167:776733

Kvrgić D. Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2021 [cited 2024 April 18] Available at: https://urn.nsk.hr/urn:nbn:hr:167:776733

D. Kvrgić, "Elektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2021. Available at: https://urn.nsk.hr/urn:nbn:hr:167:776733

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Metadata
TitleElektrokemijsko ponašanje Ti i Ti-6V-4Al legure : diplomski rad
Title (english)Electrochemical properties of Ti and Ti-6V-4Al alloy : diploma thesis
AuthorDario Kvrgić
MentorSenka Gudić (mentor)
Committee memberZoran Grubač (predsjednik povjerenstva)
Committee memberLadislav Vrsalović (član povjerenstva)
Committee memberSenka Gudić (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2021-07-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Dugotrajna stabilnost oksidnih filmova na Ti i legurama Ti ima odlučujuću ulogu pri odabiru ovih biokompatibilnih materijala za izradu različitih medicinskih i dentalnih implantata. U ovom radu ispitano je elektrokemijsko i korozijsko ponašanje Ti i Ti-6V-4Al legure u slanoj otopini fosfatnog pufera (PBS, pH = 7.4) na 37 o C (tj. u simuliranoj fiziološkoj otopini u ljudskom tijelu) praćenjem vremenske promjene potencijala otvorenog strujnog kruga, primjenom polarizacijih metoda te elektrokemijske impedancijske spektroskopije. Oštećenja na površini metala nastala polarizacijom potvrđena su optičkim i pretražnim elektronskim mikroskopom, dok je elementarni sastav oksidnog filma na površini pojedinog uzorka određen EDS analizom. Elektrokemijsko i korozijsko ponašanje Ti i Ti-6V-4Al legure posljedica je formiranja površinskog oksidnog filma koji ima dvoslojnu strukturu, a sastoji se od unutarnjeg tankog barijernog sloja i vanjskog poroznog sloja. Koroziju Ti i Ti-6V-4Al legure uglavnom sprječava unutarnji barijerni sloj, čija debljina i otpor naglo rastu u prvih nekoliko dana izlaganja PBS otopini. Kod dužih vremena izalaganja PBS otopini dolazi do naknadnog sređivanja strukture barijernog sloja i daljnjeg rasta njegovog otpora. U usporedbi Ti-6V-4Al legurom, čisti Ti pokazuje veću korozijsku stabilnost.
Abstract (english)
The long-term stability of oxide films on Ti and Ti alloys plays a crucial role in the use of these biocompatible materials for the manufacture of various implants in medical and dental practice. The electrochemical and corrosion behavior of Ti and Ti-6V-4Al alloy in phosphate buffer solution (PBS, pH = 7.4) at 37 o C (i.e. in simulated physiological solution in the human body) was examined using open circuit potential measurements, polarization and electrochemical impedance spectroscopy methods. The polarization surface damages were verified by optical and scanning electron microscopy, while the elemental composition of oxide film on the surface of each sample was determined by EDS analysis. The electrochemical and corrosion behavior of Ti and Ti-6V-4Al alloys is due to the formation of two- layer model of surface oxide film, consisting of a thin barrier-type inner layer and a porous outer layer. Corrosion of Ti and Ti-6V-4Al alloy is mainly prevented by the inner barrier layer, whose thickness and resistance increase sharply in the first few days of exposure to PBS solution. With longer exposure times to the PBS solution, the structure of the barrier layer subsequently settles and its resistance increases further. Compared to Ti-6V-4Al alloy, pure Ti shows greater corrosion stability.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:776733
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 on2022-01-14 10:25:07