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Corrosion and conservation of cultural heritage metallic artefacts


Corrosion and conservation of cultural heritage metallic artefacts
  • Author : J. Monnier
  • Publisher : Elsevier Inc. Chapters
  • Release : 2013-07-31
  • ISBN : 9780128091333
  • Language : En, Es, Fr & De
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The authors consider the case of iron atmospheric corrosion to illustrate the possibility of developing a conservation diagnosis for a given material in a given environment. In the particular case of iron atmospheric corrosion, samples from the site of the Amiens Cathedral in the North of France have been characterised in order to identify the different phases constituting the corrosion product layers. The layers consist of a matrix of iron oxy-hydroxide goethite embedded with several ferrihydrite marblings. Other phases such as as lepidocrocite, maghemite and akaganeite are present in minor quantities. A degradation index is first defined from the phase proportions and from the intrinsic electrochemical properties of those phases. Further, the electrochemical reactivity of scratched rust powders has been studied to define a second degradation index. From these two degradation indices a first step towards a corrosion diagnosis method is proposed.

Corrosion of Metallic Heritage Artefacts


Corrosion of Metallic Heritage Artefacts
  • Author : P Dillmann
  • Publisher : Elsevier
  • Release : 2014-01-23
  • ISBN : 9781845693015
  • Language : En, Es, Fr & De
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Understanding long term corrosion processes is critical in many areas, including archaeology and conservation. This important book reviews key themes such as the processes underlying corrosion over long periods, how corrosion rates can be measured and materials conserved. After an overview of the study and conservation of metal archaeological artefacts, a group of chapters reviews long term corrosion in metals such as steel, iron and bronze. Other chapters review the impact of environmental factors on corrosion rates. The book also considers instrumental techniques for measuring corrosion such as electrochemistry and scanning electron microscopy, as well as ways of modelling corrosion processes. There is also coverage of the effectiveness of corrosion inhibitors. With its distinguished editors and contributors, Corrosion of metallic heritage artefacts improves our understanding of long term corrosion and its effects. It provides a valuable reference for those involved in archaeology and conservation, as well as those dealing with the long term storage of nuclear and other waste. Reviews long term corrosion in metals such as steel, iron and bronze Considers instumental techniques such as electrochemistry for measuring corrosion

Corrosion and conservation of cultural heritage metallic artefacts


Corrosion and conservation of cultural heritage metallic artefacts
  • Author : D. Watkinson
  • Publisher : Elsevier Inc. Chapters
  • Release : 2013-07-31
  • ISBN : 9780128091210
  • Language : En, Es, Fr & De
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Relationships between conservation and corrosion scientists are assessed and similarities, differences and synergies identified. Corrosion control as a preservation option for heritage metals is advocated as being cost-effective and pragmatic. This will require generation of data to develop predictive conservation and estimation of object lifespan as a function of their intrinsic and extrinsic variables. Methods for quantitative determination of corrosion rates of chloride infested heritage iron and techniques for scaling to heritage value are discussed. The iron hull of the ss Great Britain and an AHRC/EPSRC Heritage Science Research Programme at Cardiff University are used to illustrate the rationale behind using corrosion control in heritage.

Corrosion and conservation of cultural heritage metallic artefacts


Corrosion and conservation of cultural heritage metallic artefacts
  • Author : E. Angelini
  • Publisher : Elsevier Inc. Chapters
  • Release : 2013-07-31
  • ISBN : 9780128091319
  • Language : En, Es, Fr & De
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This chapter deals with the description of suitable and innovative solutions devoted to preserve metallic artefacts in their original contexts, underwater cultural heritage sites of archaeological and historical interest, as well as with the analysis of the degradation processes of ferrous and non-ferrous artefacts induced by contact with an aggressive environment such as sea water. The chapter also provides an overview of the most common conservation strategies applied to recovered artefacts.

Corrosion and conservation of cultural heritage metallic artefacts


Corrosion and conservation of cultural heritage metallic artefacts
  • Author : D. Neff
  • Publisher : Elsevier Inc. Chapters
  • Release : 2013-07-31
  • ISBN : 9780128091234
  • Language : En, Es, Fr & De
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This chapter introduces the techniques used when investigating corrosion layers formed on cultural heritage artefacts. Various multiscale analysis methods, from macroscopic to nanoscopic scales, are presented. Information on the morphology, the elementary composition and the crystalline structure that each method allows for determining the constituents of the corrosion layers is examined, as well as their limits in terms of set-up, spatial and detection resolution. This chapter discusses the characteristics of the scientific tools that can be used to understand corrosion phenomena, by taking into account the major parameters responsible for alteration mechanisms.