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master's thesis
Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem
diplomski rad
2019. urn:nbn:hr:167:289378
Franičević, Ana
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

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Franičević, A. (2019). Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad (Master's thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:289378

Franičević, Ana. "Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:167:289378

Franičević, Ana. "Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad." Master's thesis, University of Split, Faculty of Chemistry and Technology, 2019. https://urn.nsk.hr/urn:nbn:hr:167:289378

Franičević, A. (2019). 'Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad', Master's thesis, University of Split, Faculty of Chemistry and Technology, accessed 20 November 2024, https://urn.nsk.hr/urn:nbn:hr:167:289378

Franičević A. Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad [Master's thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2019 [cited 2024 November 20] Available at: https://urn.nsk.hr/urn:nbn:hr:167:289378

A. Franičević, "Utjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad", Master's thesis, University of Split, Faculty of Chemistry and Technology, Split, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:167:289378

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Metadata
TitleUtjecaj pH otopine i koncentracije i Cl- ona na koroziju traka legure CuAlMn dobivene brzim hlađenjem : diplomski rad
Title (english)The influence of pH and Cl- ion concentration on the corrosion behavior of CuAlMn alloy produced by rapid cooling : diploma thesis
AuthorAna Franičević
MentorLadislav Vrsalović (mentor)
MBZ: 237626
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 country2019-09-30, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
U radu je ispitano korozijsko ponašanje legure CuAlMn dobivene postupkom brzog hlađenja u NaCl otopini deaeriranoj s Ar. Pratio se utjecaj promjene pH i koncentracije kloridnih iona na korozijske karakteristike legure tako da su ispitivanja provedena pri pH = 3.4, 5.4 i 7.4, a također pri koncentracijama NaCl otopine od 0.1%, 0.9% i 1.5%, pri temperaturi od 37 o C. Korištene su metoda mjerenja otvorenog strujnog kruga, metoda linearne i potenciodinamičke polarizacije. Nakon elektrokemijskih ispitivanja elektrodne površine su ultrazvučno isprane u deioniziranoj vodi osušene i ispitane svjetlosnim mikroskopom te je na njima napravljena SEM/EDS analiza. Elektrokemijska ispitivanja su pokazala da povišenje koncentracije elektrolita kao i sniženje pH vrijednosti otopine dovodi do porasta vrijednosti gustoća korozijske struje, smanjenja vrijednosti polarizacijskog otpora i pojave većih oštećenja elektrodne površine uslijed intenzivnijih korozijskih procesa. To je potvrđeno analizom površine elektroda nakon polarizacijskih mjerenja.
Abstract (english)
The corrosion behavior of CuAlMn alloy obtained by the melt spinning method in NaCl solution deaerated with Ar was investigated. The effect of the electrolyte pH and the concentration of chloride ions on the corrosion characteristics of the alloy was monitored so investigations were carried out at pH = 3.4, 5.4 and 7.4, and also at NaCl solution concentrations of 0.1%, 0.9% and 1.5%, at a temperature of 37 o C. Open circuit potential measurement, linear and potentiodynamic polarization method were used. After electrochemical investigations, electrode surfaces were ultrasonically washed in deionized water, dried and examined with a light microscope and a SEM/EDS analysis. Electrochemical studies have shown that an increase in the electrolyte concentration as well as a decrease in the pH of the solution leads to changes the values of open circuit potential in negative direction, increase in the corrosion current density, decrease in the polarization resistance value, and the appearance of greater damage to the electrode surface due to more intense corrosion processes. This was confirmed by surface electrode analysis after polarization measurements.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:289378
ProjectNumber: 3405
Title: Dizajniranje mikrostrukture i funkcionalnih svojstava legura s prisjetljivosti oblika na bazi bakra
Acronym: DMFP-CuSMA
Leader: Mirko Gojić
Jurisdiction: Croatia
Funder: HRZZ
Study programmeTitle: Chemical Technology; specializations in: Materials, Environmental Protection, Mediteranean Cultures
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
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Created on2019-12-09 09:23:12