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Characterization and Evaluation of Salty Cleaning Compounds Study in Historic Objects made of Copper Alloys from the “El Tejas” Shipwreck

Published online by Cambridge University Press:  21 May 2014

Diana E. Arano ,
Yolanda Espinosa ,
Helena Barba ,
José L. Ruvalcaba  and
Jorge A. González-Sánchez
Diana E. Arano
Affiliation:
Sección de Restauración Instituto Nacional de Antropología e Historia, Delegación Campeche, Mexico. e-mail: [email protected]
Yolanda Espinosa
Affiliation:
Sección de Restauración Instituto Nacional de Antropología e Historia, Delegación Campeche, Mexico. e-mail: [email protected]
Helena Barba
Affiliation:
Proyecto Integral Para la Protección, Conservación, Investigación y Difusión del Patrimonio Cultural Sumergido de la Península de Yucatán, Instituto Nacional de Antropología e Historia, Subdirección de Arqueología Subacuática, Mexico.
José L. Ruvalcaba
Affiliation:
Instituto de Física, Universidad Nacional Autónoma de México, Mexico
Jorge A. González-Sánchez
Affiliation:
Centro de Investigación en Corrosión, Universidad Autónoma de Campeche, Mexico.
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Abstract

Recent discoveries have shown the presence of several shipwrecks and historical pieces submerged in the seacoast of the Yucatan Peninsula of Mexico. Within these remains, it is common to found objects manufactured in copper alloys that were part of the construction system of the vessel. For the present study, different surface analysis techniques were applied to tubular copper alloy objects collected in the wreck “El Tejas”. The metallographic study allowed us to know not only the microstructure but also features over its manufacturing technique, as an example of nineteenth-century handmade production. SEM, EDX and XRF techniques allowed us know the elemental composition and establish the mechanisms of degradation of the different copper alloys in the seabed and evaluated a preservation method that consist on removing chlorine compounds by cleaning with pressure steam of distilled water.

Keywords

corrosionscanning electron microscopy (SEM)microstructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1618: Symposium 8A – Cultural Heritage and Archaeological Issues in Materials Science , 2014 , pp. 247 - 253
Copyright
Copyright © Materials Research Society 2014 

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References

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