Korozijska zaštita bakra i njegovih legura hidrofobnim filmovima heksadecilfosfonske kiseline

master's thesis

• Title (english): Corrosion protection of copper and its alloys with hydrophobic films of hexadecylphosphonic acid
• Author: Luka Vučemilović Šimunović
• Mentor: Helena Otmačić Ćurković (mentor)
• Committee member: Helena Otmačić Ćurković (predsjednik povjerenstva)
• Committee member: Marijana Kraljić Roković (član povjerenstva)
• Committee member: Mirela Leskovac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2022-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

Cilj ovog rada je ispitivanje primjene superhidrofobnih filmova u svrhu zaštite od korozije bakra i bakrovih legura. U tu svrhu provedeno je modificiranje površine uzoraka bakra i različitih vrsta bronce s heksadecilfosfonskom kiselinom (HDPA) kako bi se dobili superhidrofobni filmovi nastali slaganjem samoorganizirajućih monoslojeva. Ispitivanje stabilnosti filmova je provedeno u simulaciji otopine kisele kiše kroz vremenski period od dva tjedna. Zaštita površine bakra i bronce od korozije ispitana je i potvrđena elektrokemijskim tehnikama kao što su: elektrokemijska impedancijska spektroskopija, linearna polarizacija i Tafelova ekstrapolacija. Također, površina je karakterizirana upotrebom pretražnog elektronskog mikroskopa, goniometra za ispitivanje kontaktnog kuta i Fourierovom transformacijskom infracrvenom spektroskopijom.

Abstract (english)

The aim of this work was to examine the application of superhydrophobic films for corrosion protection of copper and copper alloys. For this purpose, surface modification of copper samples and different types of bronze was conducted with hexadecylphosphonic acid (HDPA) in order to obtain superhydrophobic films formed by self assembled monolayers. A research on protective film stability was carried out in a simulated acid rain solution over a period of two weeks. Surface protection and corrosion resistance of copper and bronze has been tested and confirmed by electrochemical techniques: electrochemical impedance spectroscopy, linear polarization and Tafel extrapolation method. Also, the surface was characterized using a scanning electron microscope, goniometer for determination of contact angle and Fourier transform infrared spectroscopy.

• Keywords: bakar; bronca; modificiranje površine; korozija; samoorganizirajući monoslojevi; superhidrofobnost
• Keywords (english): copper; bronze; surface modification; corrosion; self assembled monolayers; superhydrophobicity
• Language: croatian
• URN:NBN: urn:nbn:hr:149:886597
• Project: Number: IP-2019-04-5030; Title: Razvoj novih rješenja za karakterizaciju i zaštitu brončane kulturne baštine izložene vanjskom okolišu; Title: Development of New Solutions for Characterization and Protection of Bronze Cultural Heritage Exposed to Outdoor Environment; Acronym: BroCH; Leader: Helena Otmačić Ćurković; Jurisdiction: Croatia; Funder: HRZZ; Funding stream: IP
• Study programme: Title: Materials Science and Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-03-31 12:03:42