By David A. Scott, Jerry Podany, Brian B. Considine
The maintenance and research of metals when it comes to the issues of decay and applicable equipment of exam and remedy more and more contain collaboration among scientists and conservators. The 16 essays during this quantity concentrate on genuine gadgets from quite a lot of classes and cultures. individuals comprise Thomas Chase of the Freer Gallery in Washington, D.C., at the expertise of chinese language bronze casting; Paola Fiorentino of the Istituto Centrale del Restauro in Rome at the conservation of the equestrian statue of Marcus Aurelius; Knud Holm of the nationwide Museum of Denmark at the recovery of nineteenth-century zinc sculptures; Ian MacLeod of the Western Australian Maritime Museum at the conservation of metals from underwater websites; and W. Andrew Oddy of the British Museum at the use of gold foil and twine throughout the Iron Age in southern Africa.
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Extra resources for Ancient & Historic Metals: Conservation and Scientific Research (Symposium Proceedings)
The surface of the monument remains porous and cracked, and the gold is not stable. The micro- and large fissures, previously concealed by encrustation, now allow rainwater to enter and spread to a greater extent and absorb water (rain and condensation). Closing them with repairs would once again require a brutal grafting on already fragile and nonhomogeneous castings. As an alternative, synthetic materials might be applied. Such materials would have to be proven suitable for the project, stable with regard to the main chemicophysical points of view, and resistant outdoors.
1987 Copper patinas formed in the atmosphere III. Corrosion Science 27(7)[special issue]:741–69. , AND A. STEINBERG 1970 Bronze joining: A study in ancient technology. In Art and Technology: A Symposium on Classical Bronzes, 5–35. Cambridge: MIT Press. MARABELLI, M. 1979 Scheda di analisi 684. Rome: ICR. 1992 The environment and the future of outdoor bronze sculpture: Some criteria of evaluation. ” Baltimore: National Association of Corrosion Engineers (NACE). , A. MARANO, S. MASSA, AND G. VINCENZI 1988 La condensazione capillare di vapore acqueo in patine di bronzi esposti all’aperto.
Nat. Bur. Stand. ) Monogr. 21 (1984). Sample from Merkur BRONZE OBJECTS FROM LAKE SITES FIGURE 1a–c. Cross sec- tion of a chalcopyrite lake patina on a bronze needle, showing (a) above left, unetched, bright field with layered structure on top of the metal; (b) above right, unetched, dark field with different zones in the corrosion layer; and (c) right, region etched with alcoholic FeCl3. Note grainlike area of the corrosion layer on top of the corrosion pit and its rootlike bottom in the latter image.