Deterioro de aleaciones de cobre por acción humana
DOI:
https://doi.org/10.3989/revmetalm.2008.v44.i1.98Keywords:
Deterioration, Bronze, Brass, Cleaning, Human actionAbstract
Results are presented from several samples taken from leaves of the Pardon Portico of Mosque-Cathedral of Cordoba, where an alteration on their surface was detected. Metal samples analyzed using X-ray microanalysis and powder xray diffraction were predominantly constituted by copper with some amounts of zinc attributed to brass, whereas other samples were also constituted by copper, tin and lead attributed to bronze. Surface samples were analyzed using the same techniques. In addition Fourier transform infrared spectroscopy was also used.The main compound identified in all the surface of the leaves is copper chloride hydroxide (atacamite). Lead chlorides have also been found. These data show that the sudden alteration that appears may be attributed to the use of some cleaning product containing chloride. Other compounds detected in the surface were gypsum, quartz and oxalates coming from environmental contamination.
Downloads
References
[1] L. Uller, H. Videla and L.K. Herrera, Proc. LatinCorr, paper nº 124, ABRACO (Eds.), Rio de Janeiro, Brasil, 2006.
[2] E. Mattson and R. Holm, Atmos. Corros. (1982) 365-382.
[3] P. Eriksson, L. Johansson and J. Gullman, Corros. Sci. 34 (1993) 1083-1097. doi:10.1016/0010-938X(93)90290-W
[4] J.D. Meakin, D.L. Amest, D.A. Dolske, Atmos. Environ. 26B (1992) 207-215.
[5] G. Lanterna, Thermochim. Acta 269/270 (1995) 729-742. doi:10.1016/0040-6031(95)02668-1
[6] L.S. Selwyn, N.E. Binnie, J. Poitras, M.E. Laver and D.A. Downham, Stud. Conserv. 41 (1996) 205-228. doi:10.2307/1506541
[7] A.E. Cepero, Proc. 6th Int. Cong. Cultural Heritage and Conservation, paper nº 37, Cencrem (Eds.), La Habana, Cuba, 2002
[8] M. Morcillo and M.E.M. Almeida, Corrosión y protección de metales en las atmósferas de Iberoamérica (M. Morcillo et al., Eds), 1998, pp. 547-590.
[9] A. Lins, Sculptural Monuments in an Outdoor Environment, V.N. Naude (Ed.), Pennsylvania Academy of the Fine Arts, Philadelphia PA, 1985, pp. 8-20.
[10] M.C. Jiménez De Haro, Á. Justo, A. Durán, M.B. Sigüenza and J.L. Pérez-Rofigure Dríguez, Air Pollution and Cultural Heritage, C. Saiz-Jimenez (Ed.) Balkema Publishers. London, 2004, pp 79-84.
[11] D.M. Bastidas, I. Cayela and J.M. Bastidas, Rev. Metal. Madrid 42 (2006) 367-381.
[12] G. P. Bernardini, M. Corazza, F. Olmi, C. Sabell, Squarcia Lupi, M. C. Squarcia Lupi and R. Trosti-Ferroni, Sci. Technol. Cultural Heritage 1 (1992) 177-189.
[13] J. Barrios-Neira, L. Montealegre, M. Nieto and J. Palma, Applied Study of Cultural Heritage and Clays, J.L. Pérez Rodríguez (Ed.), Consejo Superior de Investigaciones Científicas (2003) pp. 29-46.
[14] T.E. Groedel, J.Electrochem. Soc. 136 (1993) 193C-203C. doi:10.1149/1.2096868
[15] S.E. Dunkle, Doctoral Thesis (PhD), Faculty of the Virginia Polytechnic Institute, EE. UU., 2002.
[16] S. Steiberg, K. Kawamura and I.R. Kaplam, Int. J. Environ. Anal. Chem. 19 (1985) 251-260. doi:10.1080/03067318508077036
[17] M. Del Monte, C. Sabbioni and G. Zappia, Sci. Total Environ. 67 (1987) 17-39. doi:10.1016/0048-9697(87)90063-5
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2008 Consejo Superior de Investigaciones Científicas (CSIC)
This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read here the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.