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Article Dans Une Revue RSC Advances Année : 2016

Corrosion of silver alloys in sulphide environments: a multianalytical approach for surface characterisation

Résumé

Sterling silver samples, prepared to simulate cultural heritage surfaces, were subjected to accelerated ageing tests through exposure to sulphide containing environments. Data obtained by X-ray diffraction, ultraviolet-visible spectrophotometry, contact angle goniometry, ellipsometry and scanning electron microscopy revealed, contrarily to what has been suggested, that the colour of corroded surfaces is related to the thickness of the corrosion layer and to the multi-layer structure of various corrosion products. At the early stages of corrosion, Cu prevails over the Ag compounds. In subsequent stages, AgCuS complexes were also detected. Ag2S is the prevailing corrosion product after longer periods of time.
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Dates et versions

hal-02426466 , version 1 (02-01-2020)

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I. Tissot, O. Monteiro, M. Barreiros, V. Corregidor, J. P. Correia, et al.. Corrosion of silver alloys in sulphide environments: a multianalytical approach for surface characterisation. RSC Advances, 2016, 6 (57), pp.51856-51863. ⟨10.1039/C6RA05845K⟩. ⟨hal-02426466⟩
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