Modeling Corrosion of Archaeological Silver-Copper Coins Using the Voltammetry of Immobilized Particles

被引：35

作者：

Domenech, Antonio ^{[1
]}

Teresa Domenech-Carbo, Maria ^{[2
]}

Pasies, Trinidad ^{[3
]}

del Carmen Bouzas, Maria ^{[3
]}

机构：

[1] Univ Valencia, Dept Quim Analit, E-46100 Burjassot, Valencia, Spain

[2] Univ Politecn Valencia, Inst Restauracio Patrimoni, Valencia 46022, Spain

[3] Museu Prehist Valencia, Valencia 46003, Spain

来源：

ELECTROANALYSIS | 2012年 / 24卷 / 10期

关键词：

Long-term corrosion modeling; Voltammetry of immobilized particles; Silver; Copper; Mediaeval coins; ATOMIC-FORCE MICROSCOPY; LOW-ALLOY STEELS; ATMOSPHERIC CORROSION; STRIPPING VOLTAMMETRY; ELECTROCHEMICAL REDUCTION; PITTING CORROSION; LEAD ARTIFACTS; METALS; PRODUCTS; IDENTIFICATION;

D O I：

10.1002/elan.201200252

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Two complementary models to describe the long-term corrosion of silver-copper coins, based on potential rate laws for smooth corrosion and those combined with diffusive law, for gross corrosion, are proposed. Theoretical kinetics can be tested using signatures of copper and silver corrosion products using the voltammetry of immobilized particles technique. The method is applied to silver coins minted during the 13th14th centuries from the Libertad street hoard in Valencia (Spain) using non-invasive one-touch graphite pencil sampling. Voltammetric features yield functional dependences in agreement with the proposed model potentially useful for distinguishing between different mints.

引用

页码：1945 / 1955

页数：11

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