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Published on: September 22, 2023
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Analysis of metallic archaeological artifacts by x-ray computed microtomography technique
A S Machado1, A S S Silva1, G N Campos2
1Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
Summary
X-ray microtomography (microCT) non-invasively analyzes corroded metallic artifacts, revealing internal structures and material loss. This technique aids in assessing the conservation status of archaeological finds without damaging them.
Area of Science:
- Archaeometry
- Materials Science
- Conservation Science
Background:
- Metallic archaeological artifacts undergo electrochemical corrosion, altering their structure and morphology.
- Traditional analysis methods often require destructive physical sectioning, posing challenges for artifact preservation.
- Corrosion and encrustations can obscure the original structure and degradation state of metallic artifacts.
Purpose of the Study:
- To introduce X-ray microtomography (microCT) as a non-invasive technique for analyzing metallic archaeological artifacts.
- To identify internal structures and textures of artifacts, even when covered by incrustations.
- To quantify material loss due to corrosion and assess the conservation status of historic metallic objects.
Main Methods:
- Application of X-ray microtomography (microCT) for non-invasive imaging of metallic archaeological artifacts.
- Analysis of artifact structures and textures beneath surface encrustations.
- Quantification of material loss resulting from corrosion processes.
Main Results:
- microCT successfully visualized the internal structures and textures of degraded metallic artifacts.
- The technique allowed for the quantification of material loss caused by corrosion.
- Detailed structural information was obtained despite the presence of incrustations, aiding in artifact identification.
Conclusions:
- X-ray microtomography (microCT) is an effective, non-invasive tool for the analysis of metallic archaeological artifacts.
- microCT provides crucial data for diagnosing the conservation state and preserving the morphology of historic metallic objects.
- This method offers a valuable alternative to destructive analysis techniques in archaeology and conservation.
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