Protection of Bronze by New Non-Toxic Corrosion Inhibitors from the Influence of Artificial Acid Rain

Marušić, Katarina; Otmačić Ćurković, Helena (2012) Protection of Bronze by New Non-Toxic Corrosion Inhibitors from the Influence of Artificial Acid Rain. In: Advances in Chemistry Research. Nova Science Publishers, Hauppauge, NY , SAD, pp. 315-330. ISBN 978-1-61324-676-4

Preview

PDF - Accepted Version - article
Download (585kB) | Preview

Abstract

Bronze is a metal commonly used for sculptures and building structures. These objects are often covered with patina, a layer of corrosion products, which confers their aesthetic and also protects the substrate bronze. Due to the increasing atmospheric pollution these layers, as well as the supstrate bronze, are often dissolving when exposed in urban environment. This work proposes the use of two innoxious imidazole compounds as corrosion inhibitors: 4-methyl-1-p-tolylimidazole (TMI) and 1-H benzimidazole (BZI) on the Cu-6Sn (wt-%) bronze, in a solution simulating acid rain in urban environments. The results of the electrochemical investigations have shown that both TMI, as well as BZI protect this alloy. On the Cu-6Sn bronze patina was formed by a new electrochemical method which simulates patina formed spontaneously during long term exposure to urban environments. As corrosion inhibitors both TMI and BZI were applied on patina in the solution simulating acid rain. The results have shown that they both improve greatly the stability of patina. The results confirmed that both TMI and BZI can be used for protection of bronze, as well as its patina exposed to urban environments.

Item Type:

Book Section

Uncontrolled Keywords:

bronze; acid rain; corrosion inhibitors; patina

Subjects:

NATURAL SCIENCES > Chemistry
NATURAL SCIENCES > Chemistry > Applied Chemistry
TECHNICAL SCIENCES > Chemical Engineering

Divisions:

UNSPECIFIED

Projects: