Download PDF by David A. Scott, Jerry Podany, Brian B. Considine: Ancient & Historic Metals Conservation and Scientific

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By David A. Scott, Jerry Podany, Brian B. Considine

The 16 essays during this quantity mirror quite a lot of examine referring to tools for metals conservation, fairly in appreciate to historical and ancient gadgets. the diversity of concerns mentioned contains issues within the cleansing of historical bronze vessels the procedures all for bronze casting, completing, patination, and corrosion reports of producing suggestions of gold items in historic African and medieval eu metalworking strategies of mercury gilding within the 18th century an research of patina within the category of bronze surfaces from land and lake environments an exam of bronze gadgets from the Benin nation, Nigeria the background of recovery of the Marcus Aurelius monument in Rome the corrosion of iron in structure and purposes of radiographic tomography to the research of steel gadgets.

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Additional info for Ancient & Historic Metals Conservation and Scientific Research

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The author is grateful to R. Oberhänsli of the University of Berne for analysis with the microanalyzer. Professor St. Graeser of the Natural History Museum in Basel kindly helped identify the corrosion products. P. O.

2. What is the composition and stratigraphy of each—the green-blue land and the brown-yellow lake—patina? 3. Under what sorts of environmental conditions (on dry land, in wet soil, in the water) were the patinas formed? 4. Are they primary corrosion products or were they formed later by chemical reactions with the soil? 5. Is it possible to retrace the history or the corrosion biography of an individual bronze object after its use? ORIGIN AND TYPE OF B R O N Z E M AT E R I A L A N A LY Z E D To determine the origin and type of bronze material on the objects, five small bronze objects were initially studied: four pins and a fishing hook.

At the most, a gentle consolidation of the corrosion patinas was necessary to prevent their continuous crumbling. A film of Paraloid B72 (concentration of 3% in trichloroethane) was applied as a fixative and not as a surface coating for the bronze alloy. As the surveys and restoration gradually progressed, the decision was finally FIGURE 8. Area of the monu- reached not to repair the lesions of the castings as well as not to protect the surface. ment showing both older and This decision may at first seem defeatist.

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Ancient & Historic Metals Conservation and Scientific Research by David A. Scott, Jerry Podany, Brian B. Considine

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