A pre-Columbian galvanic technique able to explain the gilding of copper in northern Peru

A. Alviz-Meza,D.A. Chipoco Haro,J. Tello-Hijar, M.I. Velarde,C. Benndorf,J.C. Rodríguez-Reyes,S. Ismat Shah

Journal of Archaeological Science: Reports（2023）

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摘要

•Gilding of copper artifacts made by Moche cultures of Peru is not well understood.•Electrochemistry has been suggested but it yields about 1 μm thick films.•1 μm thick films do not match the spectrum of thicknesses found on the artifacts.•A galvanic method based on iron pyrite as anode produces thicker films.•Film characteristics obtained by the galvanic method match well with artifacts.

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关键词

Pre-Columbian metallurgy,Cultural heritage,Gilded copper,Electrochemical replacement,Galvanic deposition

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