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Author: P Dillmann
Publisher: Elsevier
ISBN: 1782421572
Category : Technology & Engineering
Languages : en
Pages : 640
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Book Description
The conservation of metallic archaeological and historic artefacts is a major challenge whether they are ancient bronzes or relics of our more recent industrial past. Based on the work of Working Party 21 Corrosion of Archaeological and Historical Artefacts within the European Federation of Corrosion (EFC), this important book summarises key recent research on analytical techniques, understanding corrosion processes and preventing the corrosion of cultural heritage metallic artefacts.After an introductory part on some of the key issues in this area, part two reviews the range of analytical techniques for measuring and analysing corrosion processes, including time resolved spectroelectrochemistry, voltammetry and laser induced breakdown spectroscopy. Part three reviews different types of corrosion processes for a range of artefacts, whilst part four discusses on-site monitoring techniques. The final part of the book summaries a range of conservation techniques and strategies to conserve cultural heritage metallic artefacts.Corrosion and conservation of cultural heritage metallic artefacts is an important reference for all those involved in archaeology and conservation, including governments, museums as well as those undertaking research in archaeology and corrosion science. - Summarises key research on analytical techniques for measuring and analysing corrosion processes - Provides detailed understanding of corrosion processes and corrosion prevention - Discusses on-site monitoring techniques
Author: P Dillmann
Publisher: Elsevier
ISBN: 1782421572
Category : Technology & Engineering
Languages : en
Pages : 640
Get Book Here
Book Description
The conservation of metallic archaeological and historic artefacts is a major challenge whether they are ancient bronzes or relics of our more recent industrial past. Based on the work of Working Party 21 Corrosion of Archaeological and Historical Artefacts within the European Federation of Corrosion (EFC), this important book summarises key recent research on analytical techniques, understanding corrosion processes and preventing the corrosion of cultural heritage metallic artefacts.After an introductory part on some of the key issues in this area, part two reviews the range of analytical techniques for measuring and analysing corrosion processes, including time resolved spectroelectrochemistry, voltammetry and laser induced breakdown spectroscopy. Part three reviews different types of corrosion processes for a range of artefacts, whilst part four discusses on-site monitoring techniques. The final part of the book summaries a range of conservation techniques and strategies to conserve cultural heritage metallic artefacts.Corrosion and conservation of cultural heritage metallic artefacts is an important reference for all those involved in archaeology and conservation, including governments, museums as well as those undertaking research in archaeology and corrosion science. - Summarises key research on analytical techniques for measuring and analysing corrosion processes - Provides detailed understanding of corrosion processes and corrosion prevention - Discusses on-site monitoring techniques
Author: M. Saheb
Publisher: Elsevier Inc. Chapters
ISBN: 0128091320
Category : Technology & Engineering
Languages : en
Pages : 34
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Book Description
Understanding the long-term corrosion mechanisms of iron in an anoxic environment is essential in the field of the preservation of archaeological heritage artefacts and nuclear waste management. Corrosion mechanisms have been assessed by examining nails 400 years old from the archaeological site of Glinet. This chapter provides an overview of the characterisation of the entire corrosion system environment/samples through coupled multiscale analytical tools. The environment is anoxic, calco-carbonated and water-saturated. Three corrosion patterns composed of ferrous carbonates (siderite and chukanovite) and magnetite have been identified. Depending on the connection between the phases and their location, the electronic properties of the corrosion layers have been established. The electrochemical behaviour of the corrosion system shows that water reduction at the metallic interface is negligible. Furthermore, the electron consumption sites are mainly localised on the external part and the precipitation sites on the internal part of the corrosion layer. The corrosion rate is estimated to be less than 2μm/year and a corrosion mechanism is proposed based on a decoupling of the anodic and cathodic sites and on the existence of a nanometric corrosion layer at the metallic interface.
Author: D. Watkinson
Publisher: Elsevier Inc. Chapters
ISBN: 0128091215
Category : Technology & Engineering
Languages : en
Pages : 34
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Book Description
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.
Author: E. Angelini
Publisher: Elsevier Inc. Chapters
ISBN: 0128091444
Category : Technology & Engineering
Languages : en
Pages : 25
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Book Description
This chapter deals with an overview of the application of plasma technologies, an innovative environmentally friendly class of processes for the surface modification of materials, for cleaning and protection of metallic artefacts. Examples of plasma enhanced chemical vapour deposition (PECVD) of organosilicon precursors are described and appear particularly promising for the corrosion protection of the different metallic substrates such as iron-based alloys, copper and silver-based alloys of archaeological and historical-artistic interest.
Author: P. Letardi
Publisher: Elsevier Inc. Chapters
ISBN: 0128091266
Category : Technology & Engineering
Languages : en
Pages : 32
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Book Description
The basic principles of corrosion and electrochemistry are briefly summarised to indicate the capabilities of electrochemical techniques in diagnostic and conservation of heritage metals. The basic elements of each electrochemical measurement – cell, electrolyte, instrumentation – are schematically illustrated in the specific application to cultural heritage. The different measurement techniques are reviewed, divided into three groups: (1) potential measurements; (2) DC techniques; (3) AC techniques. The aims and fields of application are discussed, reporting several examples of specific applications in the field of cultural heritage.
Author: M. Abdel Harith
Publisher: Elsevier Inc. Chapters
ISBN: 0128091258
Category : Technology & Engineering
Languages : en
Pages : 34
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Book Description
In the present chapter laser-induced breakdown spectroscopy (LIBS) is introduced as a powerful spectrochemical analytical technique that can be exploited to characterize corroded artifacts. Scientific and technological aspects of LIBS are briefly presented. LIBS does not need sample preparation, it is nondestructive and it can be used for in-situ measurements. Examples of LIBS applications that can help archaeologists in conservation and restoration of metallic artifacts are given. We demonstrated the use of LIBS in analysis of corroded metal threads, depth profiling of copper-based decorative artefact, analysis of corroded Punic coins, and LIBS and XRF analysis of Roman silver denarii.
Author: A. Adriaens
Publisher: Elsevier Inc. Chapters
ISBN: 0128091274
Category : Technology & Engineering
Languages : en
Pages : 24
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Book Description
This chapter discusses the evaluation of metal conservation treatments using a specialized electrochemical cell. The cell can be deployed in a synchrotron beam line to make in-situ, time-lapse measurements on heritage metal alloys undergoing processes based on electrochemical treatments/measurements. We focus on two specific projects: (1) the evaluation of currently used stabilization processes for cupreous objects recovered from marine environments, and (2) the development and testing of a coating to protect lead objects which is stable, reversible (i.e. easy to apply and to remove), protective against corrosion and aesthetically justified.
Author: D. Neff
Publisher: Elsevier Inc. Chapters
ISBN: 0128091231
Category : Technology & Engineering
Languages : en
Pages : 37
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Book Description
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.
Author: J. Monnier
Publisher: Elsevier Inc. Chapters
ISBN: 0128091339
Category : Technology & Engineering
Languages : en
Pages : 34
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Book Description
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.
Author: N.G. González
Publisher: Elsevier Inc. Chapters
ISBN: 0128091398
Category : Technology & Engineering
Languages : en
Pages : 39
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Book Description
This chapter reviews and summarises the results of experiments using a new technique known as ‘subcritical’ for the stabilisation of archaeological iron. Five case studies are presented that illustrate the capacity of this technique to rapidly remove entrapped chloride ions from unstable metal with minimal observable changes to the objects’ integrity. This overview focuses on the effectiveness of this treatment from a conservation and preservation perspective. The benefits and current limitations of the technique are identified, as well as important areas where there is a need for further research.
