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Title:Pametne prevleke za zaščito konstrukcijskih materialov : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Copot, Anja (Author)
ID Fuchs-Godec, Regina (Mentor) More about this mentor... New window
ID Bren, Urban (Comentor)
Files:.pdf UN_Copot_Anja_2020.pdf (1,69 MB)
MD5: AADA59E31C2D5BF3050B2DEE87D6D34D
PID: 20.500.12556/dkum/54aecf8a-847f-4ce8-b837-56bd3ed14ef8
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Korozija povzroča degradacijo kovinskih materialov, ki so v stiku s tekočino ali plinom. Sam proces se pospeši z izpostavitvijo visokim temperaturam, kislinam in solem. Posledično se spremenijo lastnosti materiala in nastaja škoda pri samem tehnološkem procesu. Da bi korozijo upočasnili, uporabljamo različna inhibitorna sredstva, ki so lahko organske ali anorganske narave. Diplomsko delo prikazuje študijo pametnih prevlek kot zaščito pred korozijskimi procesi na kovinski površini. Prevleka vsebuje inkapsuliran inhibitor, ki se sprosti, ko se nahaja v agresivnem okolju. Njegovo delovanje lahko zapolni poškodbe na prevleki, ki nastanejo ob fizični poškodbi, ob spremembi pH na medfazni površini med prevleko in korozivnim medijem ter podobnim. Ovojnica kapsule se ob tem predre, sprošča se inhibitor, ki se običajno adsorbira na površino in na tak način nudi dodatno zaščito pred korozijo. Uporabili smo vzorce iz aluminijeve zlitine tipa EN AW 6451 in jih predhodno obdelali tako, da je bila oprijemljivost prevleke iz epoksidne smole z inkapsuliranimi delci inhibitorja čim večja. Zaščitni sloj smo nanesli z metodo 'spin coatinga', ki ustvari enakomerno tanek sloj zaščitne prevleke na površini preiskovanega vzorca. Testirane prevleke so vsebovale tri različne koncentracije inkapsuliranih delcev inhibitorja. Največjo inhibicijsko učinkovitost je imela 'pametna prevleka' z najvišjim utežnim odstotkom inkapsuliranih delcev, ki so vsebovali kationski surfaktant. Za korozivni medij smo uporabili vodno raztopino natrijevega klorida z dvema različnima koncentracijama (3,5 % in 0,1 mol/L). Meritve smo izvedli na vzorcih po 30-minutni stabilizaciji v raztopini na mirovnem potencialu in po 48 urni predhodni izpostavitvi korozivnemu okolju. V posameznih primerih smo dosegli tudi najvišjo možno vrednost inhibicijske učinkovitosti in sicer  = 99 % - 100 % .
Keywords:korozija, protikorozijska zaščita, pametne prevleke, inhibicijska učinkovitost, inkapsuliran inhibitor
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[A. Copot]
Year of publishing:2020
Number of pages:X, 33 str.
PID:20.500.12556/DKUM-77488 New window
UDC:620.197.3(043.2)
COBISS.SI-ID:32280579 New window
NUK URN:URN:SI:UM:DK:8C36HARK
Publication date in DKUM:08.10.2020
Views:1031
Downloads:145
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
COPOT, Anja, 2020, Pametne prevleke za zaščito konstrukcijskih materialov : diplomsko delo univerzitetnega študijskega programa I. stopnje [online]. Bachelor’s thesis. Maribor : A. Copot. [Accessed 1 April 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=77488
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:01.09.2020

Secondary language

Language:English
Title:Smart coatings for corrosion protection of the construction materials
Abstract:Corrosion presents a process that causes degradation of metal, when it comes into contact with liquid or gases. The process accelerates with exposure to high temperature, acidic solvents and salts. Chemical deterioration of a material leads to technological problems. Therefore, various inhibitors (organic or inorganic) are used for corrosion protection. This thesis presents the study of smart coatings for corrosion protection of metal materials. The coating contains an encapsulated inhibitor, which is released in contact with the agressive medium. Its activation can fill the gaps on the surface coating. The flaws in the coating can be caused by many factors, e.g. a physical injury, changed pH at the contact of the metal with the corrosive environment. Nanocapsules are able to detect active corrosion and release the inhibitor that increases corrosion protection. Aluminium based metalic substrates (EN AW 6451) were used in the experiments, which were previously processed for better adhesion of epoxy coating with nanocapsules containing the corrosion inhibitor. Spin coating was employed to apply the smart coating onto the metal surface. Tested coatings were prepared using three different concentrations of encapsulated cationic surfactant. The best inhibition efficiency was exhibited by the smart coating with the highest mass fraction of nanocapsules within the mixture. A water solution of sodium chloride with two different concentrations (3,5 % and 0,1 mlol/L) was used as corrosive medium. Tests were performed after 30 minute stabilisation of the sample in the solution and after 48 hour exposure to the corrosive environment. The applied smart coatings show a high potential fort he use as an efficient corrosion protection.
Keywords:corrosion, corrosion protection, smart coatings, inhibition efficiency, encapsulated inhibitor


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