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undergraduate thesis
Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini
završni rad
2018. urn:nbn:hr:167:424503
Garvanović, Ines
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Garvanović, I. (2018). Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:424503

Garvanović, Ines. "Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:424503

Garvanović, Ines. "Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2018. https://urn.nsk.hr/urn:nbn:hr:167:424503

Garvanović, I. (2018). 'Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 14 December 2024, https://urn.nsk.hr/urn:nbn:hr:167:424503

Garvanović I. Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2018 [cited 2024 December 14] Available at: https://urn.nsk.hr/urn:nbn:hr:167:424503

I. Garvanović, "Ispitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:167:424503

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TitleIspitivanje korozije traka CuAlNi legure dobivene brzim hlađenjem u NaCl otopini : završni rad
Title (english)Investigation of corrosion behavior of CuAlNi alloy ribons made by rapid solidification in NaCl solution : bachelor thesis
AuthorInes Garvanović
MentorLadislav Vrsalović (mentor)
Committee memberSenka Gudić (predsjednik povjerenstva)
Committee memberSandra Svilović (član povjerenstva)
Committee memberLadislav Vrsalović (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2018-07-03, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Korozijsko ponašanje CuAlNi traka dobivenih naglim hlađenjem ispitano je u 0,9 % NaCl otopini (pH = 7,4) pri temperaturama 24, 37 i 50 o C. Također je ispitan i utjecaj koncentracije kloridnih iona na koroziju traka Cu-Al-Ni u 0,1 % i 1,5 % otopini NaCl. Mjerenja su provedena elektrokemijskim metodama kao što su praćenje potencijala otvorenog strujnog kruga, metodama linearne i potenciodinamičke polarizacije. Rezultati ispitivanja su pokazali da povećanje koncentracije kloridnih iona i temperature elektrolita dovodi do porasta gustoće korozijske struje i smanjenja vrijednosti polarizacijskog otpora što ukazuje na veći korozijski napad na CuAlNi leguru. Mikroskopske snimke su ukazale na značajna oštećenja na površini CuAlNi legure uzrokovana jamičastom korozijom. SEM snimke površine CuAlNi elektroda su potvrdile da s povećanjem koncentracije kloridnih iona dolazi do većeg korozijskog napada. EDS analiza ukazala je na dominantan postotak bakra, klora i kisika na površini što ukazuje na formiranje bakrovih oksida i klorida kao glavnih produkata korozije na površini. Mali postotak aluminija ukazuje na njegovu raspodjelu u obliku aluminijeva oksida i klorida u površinskom sloju.
Abstract (english)
The corrosion behavior of the CuAlNi alloy ribbons obtained by rapid solidification was investigated in 0.9 % NaCl solution (pH 7.4) at temperatures of 24, 37 and 50 o C. The influence of chloride ions concentration on corrosion of CuAlNi ribbons has also been investigated in 0.1% and 1.5% NaCl solution. Measurements have been performed by electrochemical methods such as monitoring the open circuit potential, linear and potentiodynamic polarization methods. Results of the investigations have shown that increase in chloride concentration and electrolyte temperature leads to increase the corrosion current density and decrease the polarization resistance values which mean higher corrosion attack on CuAlNi alloy. Microscopic images have shown significant pitting corrosion damages on the CuAlNi alloy surface. Increasing the electrolyte temperature increases the surface damages of the electrode due to more intense corrosion. SEM surface images of CuAlNi electrodes have confirmed that with elevation of chloride concentration a more intense corrosion attack occurs. EDS surface analysis indicated dominant percentage of copper, chlorine and oxygen on the surface, indicating the formation of copper oxide and chloride as the major corrosion products on the surface. The presence of a small percentage of aluminum indicates its distribution in the form of aluminum oxide and chloride in the surface layer.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:424503
ProjectNumber: IP-2014-09-3405
Title: Dizajniranje mikrostrukture i funkcionalnih svojstava legura s prisjetljivosti oblika na bazi bakra
Acronym: DMFP-CuSMA
Leader: Mirko Gojić
Jurisdiction: Croatia
Funder: HRZZ
Funding stream: IP
Study programmeTitle: Chemical Technology, Orientation: Chemical Technology
Study programme type: professional
Study level: undergraduate
Academic / professional title: stručni pristupnik kemijskog inženjerstva (stručni pristupnik kemijskog inženjerstva)
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 on2018-07-11 12:18:24