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master's thesis
ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI
2022. urn:nbn:hr:128:294271
Petrić, Stjepan
Karlovac University of Applied Sciences
The Department of Mechanical Engineering

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Petrić, S. (2022). ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI (Master's thesis). Karlovac: Karlovac University of Applied Sciences. Retrieved from https://urn.nsk.hr/urn:nbn:hr:128:294271

Petrić, Stjepan. "ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI." Master's thesis, Karlovac University of Applied Sciences, 2022. https://urn.nsk.hr/urn:nbn:hr:128:294271

Petrić, Stjepan. "ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI." Master's thesis, Karlovac University of Applied Sciences, 2022. https://urn.nsk.hr/urn:nbn:hr:128:294271

Petrić, S. (2022). 'ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI', Master's thesis, Karlovac University of Applied Sciences, accessed 15 February 2025, https://urn.nsk.hr/urn:nbn:hr:128:294271

Petrić S. ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI [Master's thesis]. Karlovac: Karlovac University of Applied Sciences; 2022 [cited 2025 February 15] Available at: https://urn.nsk.hr/urn:nbn:hr:128:294271

S. Petrić, "ISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI", Master's thesis, Karlovac University of Applied Sciences, Karlovac, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:128:294271

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Metadata
TitleISPITIVANJE DJELATNOSTI KARVONA I OTOPINA ŽELATINE KAO INHIBITORA KOROZIJE ČELIKA U SUMPOROVOJ KISELINI
Title (english)TESTING THE EFFECTIVENESS OF CARVONE AND GELATIN SOLUTIONS AS INHIBITORS OF STEEL CORROSION IN SULFURIC ACID
AuthorStjepan Petrić
MentorJasna Halambek (mentor)
Committee memberTomislav Božić (predsjednik povjerenstva)
Committee memberMarina Tevčić (član povjerenstva)
Committee memberJasna Halambek (član povjerenstva)
Committee memberBarica Jurković (član povjerenstva)
GranterKarlovac University of Applied Sciences
(The Department of Mechanical Engineering)
Karlovac
Defense date and country2022, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
Korozija u tehnici predstavlja nepoželjno trošenje konstrukcijskih metala djelovanjem okoline. Na strojarskim konstrukcijama i postrojenjima često se javljaju korozijske pojave, također i u kombinaciji s ostalim oblicima koji smanjuju uporabnu vrijednost, u kombinaciji djelovanja bioloških, mehaničkih i elekričnih faktora. Inhibitorima korozije se smatraju organske i anorganske tvari koje se mogu u odgovarajućoj koncentraciji dodati korozivnom okolišu, kako bi se smanjila brzina korozije metala. Primjena im je jako raširena u industriji gdje se koriste u rafinerijama, kemijskoj industriji za obradu vode i u raznim drugim indrustrijama. Današnji zahtjevi koje tvari moraju ispunjavati da bi se mogle koristiti kao inhibitori korozije podrazumijevaju i ekološku prihvatljivost, odnosno netoksičnost za ljude i žive organizme. Iz tog razloga danas se sve više istražuju prirodni spojevi kao potencijalni inhibitori korozije metala. Iz navedenog razloga, u eksperimentalnom dijelu rada ispitani su karvon i želatina kao ekološki prihvatljivi inhibitori korozije na poliranom čeliku č. 4732. U svrhu određivanja brzine korozije korištena je gravimetrijska metoda ispitivanja, ispitana je hrapavost te površine prije i nakon izlaganja čelika 5% sumpornoj kiselini nakon 2 sata sa i bez ispitanih inhibitora. Površine uzoraka čelika snimljene su optičkim metalografskim mikroskopom.
Abstract (english)
Corrosion in technology represents the undesirable wearing of structural metals by the environment. Corrosion phenomena often occur on engineering structures and plants, also in combination with other forms that reduce the use value, in a combination of biological, mechanical and electrical factors. Corrosion inhibitors are considered to be organic and inorganic substances that can be added to the corrosive environment in the appropriate concentration in order to reduce the rate of metal corrosion. Their use is widespread in industry where they are used in refineries, the chemical industry for water treatment and in various other industries. Today's requirements that substances must meet in order to be used as corrosion inhibitors include environmental acceptability, i.e. non-toxicity for humans and living organisms. For this reason, natural compounds are increasingly being researched as potential inhibitors of metal corrosion. For the stated reason, in the experimental part of the work, carvone and gelatin were tested as environmentally acceptable corrosion inhibitors on polished steel no. 4732. In order to determine the rate of corrosion, a gravimetric test method was used, the surface roughness was tested before and after exposing the steel to 5% sulfuric acid after 2 hours with and without the tested inhibitors. The surfaces of the steel samples were recorded with an optical metallographic microscope.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:128:294271
Study programmeTitle: Mechanical Engineering
Study programme type: professional
Study level: specialist graduate
Academic / professional title: stručni/a specijalist/specijalistica inženjer/inženjerka strojarstva (stručni/a specijalist/specijalistica inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2025-02-06 14:23:14