两件西汉时期鎏金与鎏银青铜器镀层中的金属化合物

Gold and silver gilding techniques in the Western Han Dynasty of China

采用金相显微分析、环境扫描电子显微镜、X射线衍射、X射线荧光对两件西汉时期的鎏金与鎏银青铜马镳进行了分析 ,揭示了西汉时期鎏金与鎏银青铜器的部分金相学特征和部分金属化合物 ,研究结果表明我国西汉时期已采用了金汞齐与银汞齐在铅锡铜合金表面火法鎏金和鎏银技术。

Chinese gold and silver gilded leaded bronze horse harnesses dated at Western Han Dynasty (221 B.C.8 A.D.)were studied by the metallurgical microscope,Xray fluorescence (XRF),Xray diffraction (XRD),and Environmental scanning electron microscopy (ESEM).Metallurgical microscope and ESEM have shown that a sublayer of gold gilded should be prepared on the leaded bronze surface before the silver gilded layer was applied.Metallic compounds of Ag_ 0.36 Au_ 0.52 Hg_ 0.09 Cu_ 0.2 ,(Ag,Au)Hg,(Ag,Au)_3Hg_2,and Au_3Hg were detected by XRD.This research gives the evidence that mercury silvering and mercury gold gilding were used in the Western Han Dynasty.