摘要
在故宫博物院收藏的大量金属佛教文物中,部分银/银鎏金器物表面有"银锈样"物质层,为了明确该物质层的来源,选出三件(套)具有"银锈样"物质层的清代藏传佛教金属文物进行科学的检测。文中首先借助微区X射线荧光光谱仪进行原位化学元素检测,发现"银锈样"物质层可能为金属硫化物。然后采用微区X射线衍射仪进行原位物相检测,通过分析确定银质器物表面"银锈样"物质层主要是螺硫银矿(Acanthite,Ag_(2)S)和蓝辉铜矿(Digenite,Cu_(9)S_(5))的混合物,此外在鎏金器物表面还出现了金银硫化物(uytenbogaardtite,Ag_(3)AuS_(2))。因此确定各器物表面"银锈样"物质层为乌银,在装饰器物的同时还具有一定的防腐性能。
Part of the silver/gilt silver objects among the vast collection of metal Buddhist objects in the Palace Museum bear on their surface a layer of materials that appears to be silver rust.In order to find out the source of this layer,three pieces(sets)of metal objects from the Qing-dynasty Tibetan Buddhism collection bearing matters resembling silver rustare selected to be tested.In this article,firstly,in-situ chemical element detection was carried out with the help of a micro-area X-ray fluorescence spectrometer,revealing that the material could be metal sulfide.Then the in-situ micro-area X-ray diffractometer was used to discover that this is mainly composed of acanthite and digenite,while uytenbogaardtite was detected on the surface of gilt silver objects.Therefore,it is determined that the“silver rust-like”surface material is niello,embellishing the objects while preventing metallic corrosion.
作者
尚素红
吕团结
荀艳
Shang Suhong;LüTuanjie;Xun Yan
出处
《故宫学刊》
2021年第1期351-358,共8页
Journal of Gugong Studies
基金
故宫博物院2019年课题《故宫院藏乌银嵌文物修复保护与工艺研究》阶段性成果,课题编号:KT2019-14
关键词
故宫博物院
藏传佛教
金属文物
乌银
装饰工艺
the Palace Museum
Tibetan Buddhism
metal artifacts
niello
decorative craftsmanship
