Simon, H;
Cibin, G;
Robbins, P;
Day, S;
Tang, C;
Freestone, I;
Schofield, E;
(2018)
A Synchrotron-Based Study of the Mary Rose Iron Cannonballs.
Angew Chem Int Ed Engl
, 57
(25)
pp. 7390-7395.
10.1002/anie.201713120.
Preview |
Text
2018 Simon_et_al-Angewandte_Chemie_International_Edition Mary Rose Cannonballs.pdf - Published Version Download (5MB) | Preview |
Abstract
Post-excavation iron corrosion may be accelerated by the presence of Cl- , leading to conservation methods designed to remove Cl. This study exploits a unique opportunity to assess 35 years of conservation applied to cast-iron cannon shot excavated from the Mary Rose. A combination of synchrotron X-ray powder diffraction (SXPD), absorption spectroscopy (XAS), and fluorescence (XRF) mapping have been used to characterise the impact of conservation on the crystalline corrosion products, chlorine distribution, and speciation. The chlorinated phase akaganeite, β-FeO(OH,Cl), was found on shot washed in corrosion inhibitor Hostacor IT with or without an additional reduction stage. No chlorinated phases were observed on the surface of shot stored in sodium sesquicarbonate (Na2 CO3 /NaHCO3 ); however, hibbingite, β-Fe2 (OH)3 Cl, was present in metal pores. It is proposed that surface β-FeO(OH,Cl) formed in the early stages of active conservation owing to oxidation of β-Fe2 (OH)3 Cl at near-neutral pH.
| Type: | Article |
|---|---|
| Title: | A Synchrotron-Based Study of the Mary Rose Iron Cannonballs. |
| Location: | Germany |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/anie.201713120 |
| Publisher version: | https://doi.org/10.1002/anie.201713120 |
| Language: | English |
| Additional information: | © 2018 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | X-ray absorption spectroscopy, archaeology, chlorine, corrosion, iron |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL SLASH UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Institute of Archaeology > Institute of Archaeology Gordon Square |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10051016 |
Archive Staff Only
 |
View Item |
