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Pregled bibliografske jedinice broj: 261825

Protection of bronze covered with patina by innoxious organic substances


Muresan, Liana; Varvara, Simona; Stupnišek-Lisac, Ema; Otmačić, Helena; Marušić, Katarina; Horvat Kurbegović, Šefka; Robbiola, Luc; Rahmouni, Kamal; Takenouti, Hisasi
Protection of bronze covered with patina by innoxious organic substances // Electrochimica acta, 52 (2007), 27; 7770-7779 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 261825 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Protection of bronze covered with patina by innoxious organic substances

Autori
Muresan, Liana ; Varvara, Simona ; Stupnišek-Lisac, Ema ; Otmačić, Helena ; Marušić, Katarina ; Horvat Kurbegović, Šefka ; Robbiola, Luc ; Rahmouni, Kamal ; Takenouti, Hisasi

Izvornik
Electrochimica acta (0013-4686) 52 (2007), 27; 7770-7779

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
copper-tin bronze ; imidazole ; thiadiazole ; Raman spectroscopy ; corrosion

Sažetak
Cultural bronze artefacts are exposed in indoor or outdoor environment. They often suffer of a substantial alteration due to an increasing atmospheric pollution. In this work, we propose the use of some innoxious compounds as corrosion inhibitors of bronze objects covered with patina. The bronze used was Cu-6Sn (in wt-%). This composition was selected after a preliminary work on several archaeological bronzes found in Transylvania, Romania, dated from the Late Neolithic to Roman periods. First, an artificial patina was formed on this bronze, under potential regulation, in 0.2g.L-1 NaHCO3+0.2g.L-1 Na2SO4 aqueous solution (pH 8), during four days. A pale blue to green patina was obtained and characterized using EDS and Raman spectroscopy. Then, four innoxious organic substances were examined as corrosion inhibitors: 5mM 4-methyl-1-(p-tolyl)-imidazole (TMI), 10mM 1-phenyl 4-methyl-imidazole (PMI), 1mM 2-mercapto 5-R-acetylamino 1, 3, 4-thiadiazole (MAcT), 1mM 2-mercapto 5-R-amino-1, 3, 4-thiadiazole (MAT), and for comparison 1mM benzotriazole (BTA) The impedance spectra collected showed, for all of them, three depressed capacitive loops. On the basis of these capacitance values, these loops were allocated to the surface film with ionic conduction, the double layer capacitance with the charge transfer resistance, and the oxidation – reduction process involving the surface patina. TMI and MAcT were found to be efficient inhibitors though their performances are significantly lower than that of BTA.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo



POVEZANOST RADA


Projekti:
MZOS-125-1252973-2572 - Novi netoksični inhibitori korozije metala (Otmačić Ćurković, Helena, MZOS ) ( POIROT)

Ustanove:
Fakultet kemijskog inženjerstva i tehnologije, Zagreb


Citiraj ovu publikaciju

Muresan, Liana; Varvara, Simona; Stupnišek-Lisac, Ema; Otmačić, Helena; Marušić, Katarina; Horvat Kurbegović, Šefka; Robbiola, Luc; Rahmouni, Kamal; Takenouti, Hisasi
Protection of bronze covered with patina by innoxious organic substances // Electrochimica acta, 52 (2007), 27; 7770-7779 (međunarodna recenzija, članak, znanstveni)
Muresan, L., Varvara, S., Stupnišek-Lisac, E., Otmačić, H., Marušić, K., Horvat Kurbegović, Š., Robbiola, L., Rahmouni, K. & Takenouti, H. (2007) Protection of bronze covered with patina by innoxious organic substances. Electrochimica acta, 52 (27), 7770-7779.
@article{article, year = {2007}, pages = {7770-7779}, keywords = {copper-tin bronze, imidazole, thiadiazole, Raman spectroscopy, corrosion}, journal = {Electrochimica acta}, volume = {52}, number = {27}, issn = {0013-4686}, title = {Protection of bronze covered with patina by innoxious organic substances}, keyword = {copper-tin bronze, imidazole, thiadiazole, Raman spectroscopy, corrosion} }
@article{article, year = {2007}, pages = {7770-7779}, keywords = {copper-tin bronze, imidazole, thiadiazole, Raman spectroscopy, corrosion}, journal = {Electrochimica acta}, volume = {52}, number = {27}, issn = {0013-4686}, title = {Protection of bronze covered with patina by innoxious organic substances}, keyword = {copper-tin bronze, imidazole, thiadiazole, Raman spectroscopy, corrosion} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • CA Search (Chemical Abstracts)





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