In the frame of training school for participants of HINT Cost action »Rational Design of Hybrid Interfaces« there was given a lecture on in situ and ex situ approaches in investigation of various coatings, including protective coatings for metal/alloy surfaces. There were presented in situ Raman spectroelectrochemistry, in situ and ex situ IR reflection-absorption spectroelectrochemistry and in situ electrochemical AFM technique, together with their
B.04 Guest lecture
COBISS.SI-ID: 28640551Up to date the cyclic siloxane precursors remained highly overlooked in the field of protective coatings for metals/alloys. Cyclic planar precursors are composed of siloxane ring, while their functionalizations vary in accordance with the desired properties of final multifunctional products. One of their prime application possibilities lays in the arrangement of planar units, which can significantly improve the density of protective coatings for metals/alloys, consequently their impermeability for water and ionizing species. The results were presented as a lecture at conference.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 5766682The oral presentation was about receiving information on formation of structures and their changes in organic-inorganic hybrid coatings and formation of interfaces. The coatings were exposed to extensive anodic polarization and in situ and ex situ vibrational spectroelectrochemical spectra measured. We used the ex situ IR reflection-absorption (IR RA) and in situ confocal Raman spectroscopy. The coatings were prepared from hydrophobic precursor 3-glycidoxypropyl terminated poly(dimethylsiloxane) (EP-PDMS-EP) and crosslinker (3-aminopropyl)trimethoxysilane (APTMS) for aluminium alloy AA 2024. The aminopropyl-heptaisooctyl-polyhedral oligomeric silsesquioxane was incorporated into the structure of the coatings. Rheological measurements of sols were made in order to determine the most appropriate time for their deposition on the substrates and to follow the effect of the addition of silsesquioxane on time of gelation. The anticorrosion properties of coatings were also evaluated using standard technique like potentiodynamic polarisation technique. SEM was used for evaluating the morphology of the coatings. Surface properties of coatings (surface energy value, contact angles, hydrophobicity) were also determinated.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 37576709In situ rheological study of sol-gel process was performed with 3-glycidoxypropyl-terminated polydimethyl-siloxane based sols. A continuous following of rheological properties enabled a precise insight in gelation process resulting in exact prediction of gelation time, structural changes and final rheological properties of formed gel. Moreover, as polyhedral oligomeric silsesquioxanes (POSS) are successfully used compounds for improvement of various polymer properties, the influence of POSS on rheological properties, combined with the impact on thermal behaviour and electrochemical properties was studied.
B.03 Paper at an international scientific conference
COBISS.SI-ID: 37562117According to standards two steel plates were exposed to atmospheric environment in shelters of company Telekom Slovenia for 1 year. The first plate was exposed close to Ljubljana, the second plate near Koper. Our intention was to determine degree of corrosion in both kinds of environments according to standard environment clasification. It was found that both environments belong to C2 clasification, i.e. environment with low degree of corrosivity. In the frame of the project were the obtained results presented as six studies, i.e. reports. These are reports on materials' properties, in situ Raman measurements on electronic boards, testing of protected and unprotected electronic boards in humid and salt chamber and also study of corrosion clasification in atmospheric environment.
F.14 Improvements to existing production methods and tools or processes
COBISS.SI-ID: 5694234