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Two imidazole based corrosion inhibitors for protection of bronze from urban atmospheres (CROSBI ID 259794)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Marušić, Katarina ; Otmačić Ćurković, Helena ; Supnišek Lisac, Ema ; Takenouti, Hisasi Two imidazole based corrosion inhibitors for protection of bronze from urban atmospheres // Croatica chemica acta, 91 (2018), 4; 435-446. doi: 10.5562/cca3440

Podaci o odgovornosti

Marušić, Katarina ; Otmačić Ćurković, Helena ; Supnišek Lisac, Ema ; Takenouti, Hisasi

engleski

Two imidazole based corrosion inhibitors for protection of bronze from urban atmospheres

Two different imidazole based molecules were investigated as corrosion inhibitors for Cu-6Sn bronze in a sulphate/carbonate solution at pH 3 and 5 which simulate a mild and strong polluted urban environment. The tested corrosion inhibitors were 4-methyl-1-phenylimidazole (PMI) and 4- methy1-1-p- tolylimidazole (TMI). The difference between structures is in the additional para positioned methyl, -CH3, group in the phenyl ring of the TMI molecule. Their protective effect was investigated by different electrochemical methods: polarization in wide and narrow potential range and electrochemical impedance spectroscopy. The investigations have shown that both molecules give good protection to the bronze at pH 3, but only TMI showed a good effect at pH 5. Indicating that the para positioned methyl group serves as a link between the inhibitor molecule and substrate bronze.

bronze ; corrosion ; inhibitor ; imidazole ; polarization ; electrochemical impedance spectroscopy

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Podaci o izdanju

91 (4)

2018.

435-446

objavljeno

0011-1643

1334-417X

10.5562/cca3440

Povezanost rada

Kemija, Kemijsko inženjerstvo

Poveznice
Indeksiranost