Nature of lead patination

Leon Black · Geoffrey Charles Allen

31 citations0/0 files storedBritish Corrosion Journal

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Cultural Heritage Materials Analysis Corrosion Behavior and Inhibition Building materials and conservation

Abstract

A study of the factors influencing lead patination is reported. Raman spectroscopy has been used to determine the composition of patinas, while weight gain measurements and scanning electron microscopy have followed their physical development. The mechanism of the pati nation process follows a route during which the initially formed oxide film converts to a basic lead carbonate (hydrocerussite, 2PbCO3 . Pb(OH)2 ), which, under the influence of sulphur dioxide, ultimately forms lead sulphate, via intermediate tetrabasic lead sulphate and lead sulphite phases. Levels of atmospheric pollution were observed to play an important role in the rate of formation of the stable end product.

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2006Patination of historical stained windows lead cames from different European locations 2004A conservation assessment on metallic elements from Spanish Medieval stained glass windows 2015Impacto da composição química de microambientes em bens culturais: reatividade e monitoramento

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