Pregled bibliografske jedinice broj: 715197
Protection of patinas on various bronzes by different types of inhibitors
Protection of patinas on various bronzes by different types of inhibitors // EuroCorr 2014 Proceedings
Pisa, Italija, 2014. (predavanje, nije recenziran, sažetak, znanstveni)
CROSBI ID: 715197 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Protection of patinas on various bronzes by different types of inhibitors
Autori
Kosec, Tadeja ; Marušić, Katarina ; Ropret, Polonca ; Otmačić Ćurković, Helena
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
EuroCorr 2014 Proceedings
/ - , 2014
Skup
EuroCorr 2014
Mjesto i datum
Pisa, Italija, 08.09.2014. - 12.09.2014
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Nije recenziran
Ključne riječi
corrosion; bronze; patina; self-assembling monolayers
Sažetak
Numerous cultural and historical artefacts are made of bronze. In humid air, bronze is spontaneously covered by oxide films, called patina. However, in urban atmospheres the aggressive air species concentrate in acid rain which dissolves patina and the bronze itself. This leads to enhanced deterioration of bronze artefacts and formation of secondary corrosion product. In protection of historical and cultural artefacts, only methods that do not change the visual appearance of the artefact itself can be applied. Such methods include protection of bare metal as well as the patina covering it. One of the possible methods is the use of corrosion inhibitors. Recent research has shown that imidazole based inhibitors can be succesfully used to protect patinated bronze. Aim of this study is to investigate the use of imidazole and benzotriazole type inhibitors (TMI, BTAH) in protection of different types of bronzes, namely CuSnZn bronze, CuSnZnPb bronze and CuSnSi bronze. Bronzes that will be studied, will be bare or covered by two types of patinas: sulphide brown type of patina and electrochemically formed patina that simulates naturally formed patina on bronze exposed to atmosphere. Morphology and structure of the patinas will be determined using SEM/EDX and Raman spectroscopy. Then both chemical and electrochemical patina will be studied in environments that simulate urban environments. The protection properties of corrosion inhibitors will be studied on different bronzes and on differently patinated bronze samples by the use of electrochemical techniques, such as potentiodynamic measurements and electrochemical impedance spectroscopy in simulated urban rain. SEM /EDX analysis as well as Raman spectroscopy will be used to evaluate the differently formed patinas before and after the electrochemical experiments. The combination of electrochemical and spectroscopic techniques will enable the study of inhibition mechanisms and inhibition efficiency of the chosen protection method.
Izvorni jezik
Engleski
Znanstvena područja
Kemijsko inženjerstvo
POVEZANOST RADA
Projekti:
125-1252973-2572 - Novi netoksični inhibitori korozije metala (Otmačić Ćurković, Helena, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb