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undergraduate thesis
Korozijska zaštita ugljičnog čelika fosfonskim kiselinama
Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. urn:nbn:hr:149:880181
Novosel, Doroteja
University of Zagreb
Faculty of Chemical Engineering and Technology

Institutional repository: Repository of Faculty of Chemical Engineering and Technology University of Zagreb

Cite this document

Novosel, D. (2015). Korozijska zaštita ugljičnog čelika fosfonskim kiselinama (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:149:880181

Novosel, Doroteja. "Korozijska zaštita ugljičnog čelika fosfonskim kiselinama." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:880181

Novosel, Doroteja. "Korozijska zaštita ugljičnog čelika fosfonskim kiselinama." Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, 2015. https://urn.nsk.hr/urn:nbn:hr:149:880181

Novosel, D. (2015). 'Korozijska zaštita ugljičnog čelika fosfonskim kiselinama', Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:149:880181

Novosel D. Korozijska zaštita ugljičnog čelika fosfonskim kiselinama [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Chemical Engineering and Technology; 2015 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:149:880181

D. Novosel, "Korozijska zaštita ugljičnog čelika fosfonskim kiselinama", Undergraduate thesis, University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, 2015. Available at: https://urn.nsk.hr/urn:nbn:hr:149:880181

Metadata
TitleKorozijska zaštita ugljičnog čelika fosfonskim kiselinama
Title (english)Corrosion protection of carbon steel by phosponic acids
AuthorDoroteja Novosel
MentorHelena Otmačić Ćurković (mentor)
Committee memberMarijana Kraljić Roković (predsjednik povjerenstva)
Committee memberHelena Otmačić Ćurković (član povjerenstva)
Committee memberAleksandra Sander (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Chemical Engineering and Technology
Zagreb
Defense date and country2015-09-18, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Chemical Engineering in Material Development
Abstract
Cilj ovog rada bio je ispitati mogućnost zaštite ugljičnog čelika C45E od korozije u umjetnoj morskoj vodi primjenom zaštitnog filma oktadecilfosfonske kiseline (ODPA). On je formiran postupkom uranjanja čelika u alkoholne otopine fosfonske kiseline različitih koncentracija: 10^-2 M, 5*10^-3 M, 10^-3 M te u otopini CeCl3 * 7 H2O koncentracije 2mM, a potom u otopini ODPA koncentracije 10^-2 M. Rezultati su pokazali da je čelik uranjan u otopinu oktadecilfosfonske kiseline najmanje koncentracije 10^-3 M pokazao najveću otpornost prema koroziji tj. 1,5 puta veći otpor te djelotvornost inhibitora od 45% u odnosu na netretirani uzorak. U drugom ispitivanju, provedenom na uzorcima koji su tretirani sa CeCl3 * 7 H2O i ODPA, izmjeren je 9 puta veći otpor čelika prema koroziji te djelotvornost inhibitora od 92% u odnosu na nezaštićeni čelik.
Abstract (english)
The aim of this work was to investigate the possibility of corrosion protection carbon steel C45E in artificial sea water by applying protective film of octadecylphosphonic acid. The film was formed by dip coating of steel in ethanol solutions of different concentration of phosphonic acid: 10^-2 M, 5*10^-3 M, 10^-3 M; also other samples in solution of CeCl3 * 7 H2O concentration 2mM, and after in solution ODPA concentration: 10^-2 M. Results have shown that steel dip coated in solution with the lowest concentration of ODPA (10^-3) has the biggest resistance to corrosion, the 1,5 higher polarization resistance and inhibitor efficiency of 45% regarding to untreated steel. In second research, on samples which are treated with CeCl3 * 7 H2O i ODPA it has been measured 9 times bigger polarization resistance and inhibitor efficiency of 92% regarding to untreated steel.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:149:880181
Study programmeTitle: Chemical Engineering - Undergraduate study
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
Terms of useLicence In copyright icon
Created on2016-12-02 14:43:03