A Novel Method for Conservation of Copper-Based Artifacts

Abstract

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Selective Formula as A Corrosion Inhibitor to Protect the Surfaces of Antiquities Made of Leather-Composite Brass Alloy

“…If the RH is higher though, further corrosion can occur. The aim of applying corrosion inhibiting compounds to material containing copper chloride is to prevent the transformation of copper (I) chloride (Nantokite) into basic copper (II) chloride (Atacamite, Paratacamite) [13,14]. In the past, new reconstruction methods have been directly applied to archaeological content, which is now considered unethical and it is important to create a systematic testing procedure.…”

Surface Enhanced Raman Scattering, in Situ Spectro-Electrochemical, and Electrochemical Impedance Spectroscopic Investigations of 2-Amino-5-mercapto-1,3,4-thiadiazole Monolayers at a Silver Electrode

“…2-Amino-5-mercapto-1,3,4-thiadiazole (AMT) has been proposed as a newly corrosion inhibitor in the conservation of copper−tin bronzes. − Its general chemical formula is C 2 H 3 N 3 S 2 , which is also found under the chemical name of 5-amino-1,3,4-thiadiazole-2-thiol. It is regarded as a planar, pentaheterocyclic compound which is usually white-yellowish powdered crystalline solid at normal temperature.…”

A Study and Treatment of Some Syrian Copper Objects Exhibited in the Agricultural Museum in Cairo

“…The percentage of Zinc in one sample rises to 28.5% while in the other sample it decreases to 5.47%, where Zinc improves the characteristics of the alloy [16]. It believed that the brass alloy commonly has 30% Zinc [17], and most historians believed that using Zinc mixed with Copper started at the beginning of 500 B.C [18]. The Romans were the first to use that mixture on a large scale by melting Zinc with Copper and adding other elements to the alloy such as Tin at a percentage ranging from 0.1%-0.2% [19].…”