Conservation · Copper Alloy
Maritime Metal
Conservation of an 18th-century maritime copper object with extensive marine corrosion, treated using x-radiography and mechanical cleaning techniques.
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Client
Dutch government
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Period
18th century
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Origin
Fort Cumberland, Portsmouth
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Duration
2 months
Challenge
The maritime copper object was covered with thick marine corrosion layers that completely obscured the underlying metal. The marine environment had created unique corrosion products that were difficult to remove without damage to the original surface. The exact nature and condition of the object beneath the corrosion was unknown.
Approach
A scientific approach was employed, beginning with extensive x-radiography to understand the internal structure and condition before physical treatment began. Based on the radiographs, a strategy was developed for mechanical corrosion removal using specialized maritime conservation equipment.
Outcome
The object was successfully exposed from marine corrosion layers, revealing the original copper surface and structural details. The x-radiography provided valuable information about the construction and condition of the object. The treatment was carried out in the specialized maritime conservation facilities of Historic England.
Techniques
- X-radiography
- Mechanical corrosion removal
- Hydraulic air-scribe cleaning
- Maritime conservation techniques
- Documentation and photography
Materials
- Hydraulic air-scribe
- Specialized cleaning tools
- Protective coatings for maritime objects
Interested in conservation services?
Each project receives individual attention, with a treatment plan tailored to the specific needs of your object.