Evaluation of laser cleaning for the restoration of tarnished silver artifacts

被引：42

作者：

Palomar, T. ^{[1
,2
,3
]}

Oujja, M. ^{[4
]}

Llorente, I. ^{[1
]}

Ramirez Barat, B. ^{[1
]}

Canamares, M. V. ^{[5
]}

Cano, E. ^{[1
]}

Castillejo, M. ^{[4
]}

机构：

[1] Ctr Nacl Invest Met CENIM CSIC, Avda Gregorio del Amo 8, Madrid 28040, Spain

[2] FCT UNL, Dept Conservacao & Restauro, Campus Caparica, P-2829516 Quinta Da Torre, Caparica, Portugal

[3] FCT UNL, Res Unit VICARTE Vidro & Ceram Artes, Campus Caparica, P-2829516 Quinta Da Torre, Caparica, Portugal

[4] Inst Quim Fis Rocasolano IQFR CSIC, Serrano 119, Madrid 28006, Spain

[5] Inst Estruct Mat IEM CSIC, Serrano 121, Madrid 28006, Spain

来源：

APPLIED SURFACE SCIENCE | 2016年 / 387卷

基金：

欧盟地平线“2020”;

关键词：

Laser cleaning; Silver; Sterling silver; Tarnishing; Cultural heritage; CORROSION; SPECTROSCOPY; RADIATION; SURFACE; ROMAN; METAL;

D O I：

10.1016/j.apsusc.2016.06.017

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study we evaluate the laser cleaning of tarnished pure and sterling silver substrates using a nanosecond Q-switched Nd:YAG laser at 1064, 532 and 266 nm. To assess the effects associated with cyclic laser cleaning treatments, several cycles of tarnishing followed by laser cleaning were applied on silver coupons that were characterized by gravimetry, colorimetry, scanning electron microscopy, X-ray photoelectron spectroscopy and micro-Raman spectroscopy. According to the obtained results, none of the three wavelengths is recommended for laser cleaning of pure silver objects, while for sterling silver artifacts, the visible laser wavelength of 532 nm seems the most appropriate. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：118 / 127

页数：10

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