Comparative study of patinas formed on statuary alloys by means of electrochemical and surface analysis techniques

被引：29

作者：

Cicileo, GP

Crespo, MA

Rosales, BM

机构：

[1] CITEFA-DEICOR, Villa Martelli 1603

[2] Area de Conservacion - Restauracion, Secretaria de Cultura G.C.B.A., Piso 575 6

来源：

CORROSION SCIENCE | 2004年 / 46卷 / 04期

关键词：

alloys; atmospheric corrosion; SEM; X-ray diffraction;

D O I：

10.1016/j.corsci.2003.07.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A comparative evaluation of natural patinas and those formed during acid rain laboratory tests was applied to predict patina stability in corrosive urban environments. SEM-EDX analyses of various statuary alloys after the laboratory tests distinguished areas of correlative intensity of attack and S percentage, depending on the alloy. Moreover, EDX and X-ray diffraction (XRD) determined the chemical composition of different coloured patina carefully scraped from a bronze monument, submitted to 75 years outdoors exposure. To analyse the electrochemical potential evolution with time the in situ Pourbaix technique was applied on the laboratory-exposed samples and over representative areas of the monument, at 2 years interval. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：929 / 953

页数：25

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