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A Study of the Role of Heterogeneities in the Initial Stages of Corrosion of Glazes Using Dynamic Imaging Microellipsometry (DIM)

Published online by Cambridge University Press:  26 February 2011

B.E. McCarthy ,
P.B. Vandiver  and
J. Kruger
B.E. McCarthy
Affiliation:
The Getty Conservation Institute, 1200 Getty Center Dr. Suite 700, Los Angeles, CA 90049, bmccarthy@getty.edu
P.B. Vandiver
Affiliation:
Smithsonian Institution, CAL-MSC Washington DC 20560
J. Kruger
Affiliation:
Dept. of Materials Science and Engineering, The Johns Hopkins University, Baltimore, MD 21218
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Abstract

Common processes used in glazed ceramic production often result in a glaze with a heterogeneous microstructure. Heterogeneities may be due to residual batch materials, intentionally added colorants and opacifiers and/or the products of devitrification and phase separation. To study the effect of heterogeneities in the corrosion process, dynamic imaging microellipsometry was used in-situ in aqueous solutions to measure spatially and temporally resolved changes in the surface of glasses (model glazes). The measurements showed increased durability near inclusions. Residual stress fields surrounding the heterogeneities influenced the results. Decoupling of chemical and mechanical factors causing this increased durability was not possible.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 462: Symposium DD – Materials Issues in Art and Archaeology V , 1996 , 31
Copyright
Copyright © Materials Research Society 1997

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