α-CuSn bronzes in sulphate medium: Influence of the tin content on corrosion processes

Müller, Johanna; Laïk, Barbara; Guillot, Ivan

doi:10.1016/j.corsci.2013.07.025

Cited by 32 publications

(22 citation statements)

References 31 publications

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“…Parameters as crucial as diffusion coefficient of some species were collected and are used to serve modelling of processes at this stage. For example this was performed in a study of bronze corrosion in sulphate medium in order to understand the influence of tin content on corrosion processes (Muller et al 2013). An analytical model of the long term corrosion of iron reinforcement embedded in hydraulic binders using parameters directly measured on archaeological artefacts was proposed by Chitty et al (2008a, b).…”

Section: Analyses At Nanometer Scalementioning

confidence: 99%

From Archaeological Sites to Nanoscale: The Quest of Tailored Analytical Strategy and Modelling

Bellot‐Gurlet

Dillmann

Neff

2016

Nanoscience and Cultural Heritage

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Last developments of nano probes allows scientists of Cultural Heritage to assess a new kind of information that is crucial in the different topics concerned by the field: determining ancient manufacturing processes, studying use and provenance of ancient artefacts, revealing the degradation processes and developing adapted cleaning and conservation treatments. Nevertheless to be useful, these nanoscale approaches must be integrated in a tailored multi-step analysis. The final aim of these approaches will be to reach understanding and/or reliable modelling of the behaviours of the ancient systems. A first part of this chapter will review the issues in Cultural Heritage and the nature of the physico-chemical data that can be collected on the systems. In a second part, a selection of examples dealing with nano characterisation in Cultural Heritage will allow us to present several up to date techniques and methodologies employed in Cultural Heritage science. Then, the third part of the chapter will review some of the different modelling attempts that where already made in the domain of Cultural Heritage, and that were based on the use of physico-chemical descriptions at different scales. The challenge for the next future will be, for different kind of materials and environments, to propose multiscale models from nano to functional scale. Some key steps to face these challenges bridging the gap between multiscale descriptive characterisation and numerical modelling are reviewed here.L. Bellot-Gurlet MONARIS "de la Molécule aux Nano-objets: Réactivité, Interactions et Spectroscopies", UMR 8233,

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Section: Analyses At Nanometer Scalementioning

confidence: 99%

From Archaeological Sites to Nanoscale: The Quest of Tailored Analytical Strategy and Modelling

Bellot‐Gurlet

Dillmann

Neff

2016

Nanoscience and Cultural Heritage

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“…In these processes, the nature of the tin layer and the way it protects the metal was a long time in discussion. To enlighten that point, Muller et al (Muller et al 2010(Muller et al , 2013) performed a study on coupons simulating the type I pattern after corrosion in sulphate aqueous solution. Different kind of bronzes were tested (a-Cu(Sn) and CuSn 7 ).…”

Section: Non-ferrous Alloysmentioning

confidence: 99%

Nanoscale Aspects of Corrosion on Cultural Heritage Metals

Dillmann

2016

Nanoscience and Cultural Heritage

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International audienceMetallic artefacts are an important part of the cultural heritage and must be protected for the future generations. Unfortunately, classical metal protection methods used for example in industry, can in most of cases not be used in the context of the conservation of cultural heritage because artefacts must not be aesthetically modified and any protection treatment must be potentially removable without any damage to the artefact. For that reason, to set up efficient conservation strategies, it is necessary to understand and model the long term corrosion mechanisms. In addition to environmental monitoring and empirical approaches, the fine understanding of the corrosion systems, based on the use of multiscale character-isation techniques and methodologies is a key issue to understand the mechanisms and evaluate the degradation rates. This chapter reviews the cases for which investigations at nano scales are necessary to understand and model in a reliable way the corrosion behaviour of different metals (ferrous alloys and bronzes). Nanoscale investigation, also allows scientists to understand the way intentional patinas were made on ancient bronzes. Lastly, an example of the use of nan-otechnology to set up an adapted and innovative protective treatment is given

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“…This was attributed to the high solubility of SnCl2 in water. On the other hand, the corrosion rate for the Cu-Sn alloys in non-chloride media, mainly sulphate solutions, remains quite low and the trend in corrosion rate with Sn content is reversed with the higher Sn content leading to slower rates of corrosion [3].…”

Section: Introductionmentioning

confidence: 98%

Corrosion protection of bronze using 2,5-dimercapto-1,3,4-thiadiazole as organic inhibitor: spectroscopic and electrochemical investigations

Qafsaoui

Taouil

Kendig³

et al. 2019

J Appl Electrochem

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Effect of 2,5-dimercapto-1,3,4-thiadiazole (DMTD) concentration on the electrochemical behaviour of bronze was studied in 30 g L-1 sodium chloride (NaCl) by means of surface analyses and electrochemical techniques. Scanning Electron Microscopy (SEM) was used to observe surface morphology. Raman micro-spectroscopy was carried out to study chemical structure of deposited layers. X-ray photoelectron spectroscopy (XPS) enabled elemental characterization as well as molecular structure investigation. Finally, electrochemical polarization and impedance permitted a thorough study of corrosion protection behaviour reached through the presence of DMTD based organic layers on the surface. Above 1 mM, a fast adsorption of DMTD on copper (Cu) and lead (Pb) allows a thin and blocking film to be formed on bronze surface. DMTD prevents oxide formation at high concentrations and the surface film is mainly composed of Cu I-DMTD and Cu II-DMTD complexes as evidenced by spectroscopic techniques, with a bidentate adsorption at 1 mM and monodentate adsorption at 10 mM.

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α-CuSn bronzes in sulphate medium: Influence of the tin content on corrosion processes

Cited by 32 publications

References 31 publications

From Archaeological Sites to Nanoscale: The Quest of Tailored Analytical Strategy and Modelling

From Archaeological Sites to Nanoscale: The Quest of Tailored Analytical Strategy and Modelling

Nanoscale Aspects of Corrosion on Cultural Heritage Metals

Corrosion protection of bronze using 2,5-dimercapto-1,3,4-thiadiazole as organic inhibitor: spectroscopic and electrochemical investigations

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