Characterization of corrosion products on old protective glass,especially daguerreotype cover glasses |
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| Authors: | M. Susan Barger Deane K. Smith William B. White |
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| Affiliation: | (1) Department of Materials Science and Engineering, The Johns Hopkins University, 21218 Baltimore, MD, USA;(2) Department of Geosciences and Materials Research Laboratory, The Pennsylvania State University, 16802 University Park, PA, USA |
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| Abstract: | ![]()
The method of casing objects using a protective cover glass bound to the object using a tape or frame promotes glass corrosion on the inside surface of the cover glass in preference to the outside surface. The characterization of some of the corrosion products found on these glasses is discussed especially as it applied to cased daguerreotypes. The geometry of these packages is responsible for the corrosion phenomenom. The types of corrosion products and the severity of the corrosion is a function of the bulk composition of individual cover glasses. |
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