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Download e-book for iPad: Ancient & Historic Metals Conservation and Scientific by David A. Scott, Jerry Podany, Brian B. Considine

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

The 16 essays during this quantity mirror a variety of study relating tools for metals conservation, relatively in recognize to historic and old items. the diversity of concerns mentioned comprises concerns within the cleansing of historical bronze vessels the strategies enthusiastic about bronze casting, completing, patination, and corrosion experiences of producing ideas of gold items in historical African and medieval eu metalworking options 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 items from the Benin nation, Nigeria the background of recovery of the Marcus Aurelius monument in Rome the corrosion of iron in structure and functions of radiographic tomography to the research of steel items.

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Apart from dating techniques, botanical, zoological, and sedimentological studies have contributed to a better understanding of the cultural and ecological development of ancient populations. As far as metal artifacts are concerned, research has been centered mainly on the examination of metal alloys and the history of technologies. Considering all these investigations, it is surprising that little attention has been paid thus far to the composition and structure of corrosion layers on metals as an opportunity for archaeometric research.

This information should provide investigators with the possibility of writing the biography of ancient metal artifacts. This paper was written for the use of archaeologists; however, the results of the author’s investigations on the composition and structure of corrosion layers of ancient bronzes from lake settlements are also included. Few studies have been published on the effect of the soil type on the composition of patinas (Geilmann 1956; Tylecote 1979; Robbiola et al. 1988; Robbiola 1990).

1a). The second zone, clearly visible in dark-field illumination (Fig. 1b) is very regular and free of any inclusions or holes. The third layer is quite porous. The number and size of the pores increase toward the surface. After etching with alcoholic FeCl3 solution, one can clearly see the crystalline appearance of the structure of the corrosion layer on top of the corroded α-phase grains (Fig. 1c). The corrosion proceeds into the metal through the grains like a root. 7 Analysis showed the area represented in Figures 2a–d to be the same as that in Figure 1a.

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


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