Introduction: conservation versus laboratory investigation in the preservation of metallic heritage artefacts

Dillmann, Philippe; Watkinson, David; Angelini, Emma Paola Maria Virginia; Adriaens, Mieke

doi:10.1533/9781782421573.1

Cited by 5 publications

(8 citation statements)

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“…The costs for corrosion damages are high on a global scale and therefore the mechanisms and effects of atmospheric corrosion on metals have been thoroughly analysed and described (Cramer and Covino 2003;Kallias, Imam, and Chryssanthopoulos 2017;Leygraf et al 2016;Morcillo et al 2019aMorcillo et al , 2019bOdnevall 1994;Tidblad 2013). Research describes the impact of corrosion on historical metals, and also on synthesising instructions for conservation of metal artifacts, sculptures and architectural elements (Dillmann et al 2013;Faltermeier 2014;Godfraind, Pender, and Martin 2012;Watkinson 2013). In contrast, the research on historical steel-sheet roofing is scarce and the instructions are often brief and generalising.…”

Section: Research Gap and Methodologymentioning

confidence: 99%

“…The conclusion reached from the above-mentioned references is that much paint research on treatments of metals does not recognise the value the importance of preserving authentic paints. There is existing research on historical anticorrosive painting systems, but is limited in terms of the complexity of conservation (Dillmann et al 2013;Martin 2012, 2013;Watkinson 2013). Research from the previous century on the outdoor use of linseed oil paints is still viable Carter 1950, 1953;Hudson and Stanners 1955;IVA 1935IVA , 1961Mayne 1970).…”

Section: Research Gap and Methodologymentioning

confidence: 99%

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Maintenance of Painted Steel-sheet Roofs on Historical Buildings in Sweden

Källbom

Almevik

2020

International Journal of Architectural Heritage

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This work presents a model and tools with which stakeholders and others involved in the conservation and maintenance process to make informed, evidence-based decisions for the treatment of painted steel-sheet roofs on historical buildings. The aim is to bridge the communication gap between research and practice and to provide useful tools for balancing technical, economic, environmental and historical values. The presented research is based on research and field experiences from practice in Sweden, and focuses on the different stages of building conservation: anamnesis, diagnosis, therapy and control/monitoring. The results are exemplified by systematic descriptions of material characteristics, anticorrosive treatment procedures and quality control checkpoints. A material and method matrix is proposed that can be used in diagnosis, planning and documentation of general procedures, or which can be refined for specific object procedures. It could be used for comparing cases, for suggesting areas of further work or for setting minimum levels for documentation. The matrix can be connected to different quality standards of conservation. It may favour the communication and systematic assessment of working procedures for different substrates, and the further development of best practices.

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Section: Research Gap and Methodologymentioning

confidence: 99%

Section: Research Gap and Methodologymentioning

confidence: 99%

Maintenance of Painted Steel-sheet Roofs on Historical Buildings in Sweden

Källbom

Almevik

2020

International Journal of Architectural Heritage

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“…Forming and Shaping Although the basic laws underlying corrosion processes in the field of cultural heritage are the same as in industry, the criteria and priorities behind operational choices to mitigate the adverse effects of corrosion are deeply different [4,5,7,[11][12][13]. The vast possibilities of interaction between distinct metals and types of environment give rise to unlimited combinations of corrosion forms, making it useless for conservation purposes to gather occurrences following traditional corrosion classifications.…”

Section: Construction Step Descriptionmentioning

confidence: 99%

“…This triggered a growing interaction between conservator-restorers and the scientific community [6][7][8][9][10]25,32]. Over the last decades, this allowed a number of improvements: A growing understanding of the electrochemical processes typical of outdoor bronze monuments [33][34][35][36][37][38][39]; the dissemination of the "Theory of Restoration" by Brandi as a tool to lead choices on new conservation practices [7,11,40,41]; more awareness about possible strategies to deal with the changing equilibria and available resources [3,42].…”

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confidence: 99%

Testing New Coatings for Outdoor Bronze Monuments: A Methodological Overview

Letardi¹

2021

Coatings

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Coatings to be used for cultural heritage protection face peculiar challenges. In the last few decades, several projects addressed the issue of new treatments in the field of copper alloy artworks. Nonetheless, no one has yet been recognised as a more acceptable solution with respect to traditional choices, with their known limits. The lack of standard methods to test new coatings that can be effectively applied to artworks make it more difficult to compare different studies and open the way to practical use in restoration. Over the years, several issues have gradually been better focused, even though they are not yet widely considered in new coatings efficacy evaluation for application on copper alloy artifacts. They are mainly linked to the quite complex surface of this category of heritage objects and the role it plays on coating effectiveness. An overview of the variety of relevant surface properties is provided (presence of corrosion products and old protective treatments, cleaning methods, surface unevenness, just to name a few) with a special focus on the role of coating performance. Some methodological choices are discussed for the selection of mock-ups, testing techniques and weathering procedures, with peculiar attention to comparison with real artworks.

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“…Therefore, several conservation and restoration methods are currently performed to stabilize the corrosion layers on outdoor iron-based structures. Organic coatings, such as waxes, resins, and oils, are applied to protect iron surfaces, acting as a physical barrier against atmospheric agents [3,9,10]. Nevertheless, these protective systems often need frequent maintenance to avoid failures of the coating film and exposure of the metal substrate to further oxidation [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Biogenic Passivating Layers on Corroded Iron

et al. 2020

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This study evaluates mechanisms of biogenic mineral formation induced by bacterial iron reduction for the stabilization of corroded iron. As an example, the Desulfitobacterium hafniense strain TCE1 was employed to treat corroded coupons presenting urban natural atmospheric corrosion, and spectroscopic investigations were performed on the samples’ cross-sections to evaluate the corrosion stratigraphy. The treated samples presented a protective continuous layer of iron phosphates (vivianite Fe2+3(PO4)2·8H2O and barbosalite Fe2+Fe3+2(PO4)2(OH)2), which covered 92% of the surface and was associated with a decrease in the thickness of the original corrosion layer. The results allow us to better understand the conversion of reactive corrosion products into stable biogenic minerals, as well as to identify important criteria for the design of a green alternative treatment for the stabilization of corroded iron.

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Introduction: conservation versus laboratory investigation in the preservation of metallic heritage artefacts

Cited by 5 publications

References 0 publications

Maintenance of Painted Steel-sheet Roofs on Historical Buildings in Sweden

Maintenance of Painted Steel-sheet Roofs on Historical Buildings in Sweden

Testing New Coatings for Outdoor Bronze Monuments: A Methodological Overview

Investigation of Biogenic Passivating Layers on Corroded Iron

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