激光清洗技术在一件鎏金青铜文物保护修复中的应用
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(1.中国文化遗产研究院, 北京100029;;2.中科院自然史研究所, 北京100190; ;3.北京大学文博学院, 北京100871; ;4.河北文保中心, 河北石家庄050031)

作者简介:

张晓彤(1969—),女,1990年毕业于中国地质大学水文地质与工程地质专业,副研究馆员,Email:Zhangxiaotong@vip.sina.com

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中国文化遗产研究院基本科研业务费资助


Laser cleaning technology in the conservation of gilt bronze
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(1.China Academy of Cultural Heritage, Beijing, China; ;2.The Institute for the History of Natural Sciences, Chinese Academy of Sciences, Beijing, China; ;3.Peking University, Beijing100871, China; ;4.Center for the Conservation of Cultural Heritage, Hebei Province, Shijiazhuang, China)

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    摘要:

    为了恢复鎏金造像的美观以及与同类造像外观协调,需对其进行清洗。但传统的机械、化学清洗方法存在着有残留和给器物表面造成划伤的风险,因此利用先进的激光清洗技术进行清洗。针对一件鎏金青铜造像进行的激光清洗,采用了λ1064nm,pwr155165,Qdiv10的参数,能量密度在0.30~0.50J/cm2的范围,激光垂直照射液膜法进行清洗。通过清洗,造像面部及周身线条轮廓清晰,散发鎏金光泽,体现了原有工艺价值。采用了肉眼观察和三维视频显微镜观察,完成了激光清洗本件鎏金青铜造像的效果评估,证明了激光清洗的高效、安全、可控的特点。本次实验也为这批鎏金青铜造像的激光清洗确定了适用的激光清洗参数和方法,同时也为激光清洗技术在其它鎏金青铜器的清洗提供借鉴。

    Abstract:

    It is sometimes necessary to clean gilt statues to restore their appearance so as to coordinate with similar statues. However, there are risks of damaging the object''s surface and of leaving residues on the object using traditional mechanical and chemical cleaning methods. Cleaning a gilt statue by using an advanced laser cleaning technology was pesented. A method using a vertical laser through liquid membrane was employed to clean a gilt bronze statue. The laser light parameters were:λ, 1064nm,power, 155~165,Qdiv10, and an energy density in the range 0.30~0.50J/cm2. After cleaning, the contour lines of the body and face of the statue became much clearer, with the statue having the sheen of gilt. The ancient handicraft techniques were fully revealed. The cleaning effect was evaluated by visual inspection and three dimensional microscopic examinations. The laser cleaning method has the advantages of high efficiency, safety and controllability. This experiment confirmed that laser cleaning is compatible with this batch of gilt bronze statues, and provides a useful reference for cleaning other gilt bronze objects.

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  • 收稿日期:2011-04-20
  • 最后修改日期:2012-06-16
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  • 在线发布日期: 2013-09-22
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