广东“南澳Ⅰ号”沉船出水的两组铜钱板结物与其余20件铜器相比较,其表面凝结物较少,锈层颜色为鲜艳的蓝绿色,整个器物非常酥松。本文采用X-射线荧光(XRF)、X-射线衍射(X RD)、金相显微镜和扫描电子显微镜/能谱(SEM-EDS)等,分析其组成成分和组织特征,发现这两组铜钱板结物为铜、锡和铅合金,其中铅含量非常高,其基体残留较少,晶界腐蚀比较严重,铅呈颗粒状弥散分布。同时发现氯化物和硫化物,如Cu_(1.92)S和Cu(OH)Cl等。 Guangdong “Nan’ao I ” wreck water two sets of copper coins compared with the remaining 20 pieces of bronze, the surface less coagulation, the rusty color is bright blue-green, the whole thing is very crisp. X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (SEM-EDS) were used to analyze the composition and microstructure. Materials for the copper, tin and lead alloys, including lead content is very high, the matrix less residual, more serious grain boundary corrosion, lead was granular dispersion. Also found chloride and sulfide, such as Cu_ (1.92) S and Cu (OH) Cl and so on.