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International Journal of Corrosion
Volume 2012, Article ID 150380, 6 pages
http://dx.doi.org/10.1155/2012/150380
Research Article

Preliminary Study of Corrosion Status on Bronzes Excavated from Qin Dynasty Tombs at Xinfeng Town in China

1Emperor Qin's Terra-Cotta Warriors & Horses Museum, Lin Tong, Shaanxi Province, Xi'an 710600, China
2School of Materials Science and Engineering, Shaanxi Normal University, Chang An South Road 199#, Shaanxi Province, Xi'an 710062, China
3School of Cultural Heritage, Northwest University, Tai Bai North Road 229#, Shaanxi Province, Xi'an 710069, China
4Institute of Archaeology of Shaanxi, Yan Ta Region, Shaanxi Province, Xi'an 710043, China

Received 10 August 2011; Revised 22 January 2012; Accepted 24 January 2012

Academic Editor: Rokuro Nishimura

Copyright © 2012 Qian-li Fu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

From 2007 to 2008, many bronze wares of Qin Dynasty were excavated from tombs at Xinfeng town. Being an important finding, these bronze wares attracted people’s attention, especially for their conservation. Therefore, the corrosive products were explored by using Scanning Electron Microscope with Energy Dispersive X-ray Detector (SEM/EDS), X-Ray diffraction (XRD), and Raman spectroscopy (RM), which provided much valuable information on the conservation of these bronze wares. According to tested results, the corrosive products of bronzes were found to be comprised of cuprite (Cu2O), covellite (CuS), lead carbonate (PbCO3), and malachite (CuCO3·Cu(OH)2). Meantime, the multilayer corrosive structure was found in some samples due to the cracks in Cu2O layer which had formed many microchannels to promote the material migration.