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The effect of βFeOOH synthesis routes on its ability to corrode iron

Emmerson, Nicola, Watkinson, David, Roche, Kimberly, Seifert, Jerrod and Thunberg, Johanna 2022. The effect of βFeOOH synthesis routes on its ability to corrode iron. Presented at: Metal 2022: 10th Interim Meeting of the ICOM-CC Metals Working Group, Helsinki, Finland, 5 - 9 September 2022.

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Akaganeite (βFeOOH) occludes chloride within its crystal structure and adsorbs it onto it surface during its formation. βFeOOH was synthesised by solid-state and aqueous precipitation routes. The amount of adsorbed chloride removed by a single aqueous wash was measured. The impact of the synthesised βFeOOH on the oxidation rate of iron was determined by using a remote oxygen sensing technique to record oxygen concentrations within a sealed vessel, internally controlled to 80% relative humidity and containing mixture of βFeOOH and iron powder. The oxidation rate of iron was directly related to the mass% of adsorbed chloride removed by the aqueous wash. This contributes to understanding of both iron corrosion and the development of conservation treatments.

Item Type: Conference or Workshop Item (Paper)
Status: Unpublished
Schools: History, Archaeology and Religion
Subjects: A General Works > AM Museums (General). Collectors and collecting (General)
C Auxiliary Sciences of History > CC Archaeology
Q Science > QD Chemistry
Date of First Compliant Deposit: 4 May 2022
Date of Acceptance: 22 February 2022
Last Modified: 01 Oct 2022 01:30

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