云南香格里拉迪庆藏族自治州博物馆藏币的科学分析

Scientific analysis of Tibetan coins from the collection of the Tibetan Autonomous Prefecture Museum in Shangri-La Diqing County,Yunnan

为了解西藏钱币的制作工艺,采用金相显微镜组织观察和扫描电子显微镜分析的方法,对云南香格里拉迪庆藏族自治州博物馆收藏的五枚藏币样品进行分析。分析结果表明,五枚藏币可以分作两类,一类为铜质,一类为银铜合金。铜质钱币为含铜率高达99%,可以判定为纯铜制品;银铜合金币的配比基本符合"银八铜二"的合金化的要求。五枚钱币全部采用机械冲压制作,符合当时社会的生产动力变化。本研究成果对进一步研究西藏地区钱币的工艺技术有一定价值。

Five coins from the collection of the Tibetan Autonomous Prefecture Museum in Yunnan Province,Shangri-La Diqing county,were analyzed by metallurgical microscopy observations and scanning electron microscopy.The results suggest that these five coins could be categorized into two groups：Copper and Ag-Cu alloy.Copper coins have a copper content up to 99%,and can be considered as pure copper products;the Ag-Cu alloy coins have similar composition as those at the same period.The five coins were produced by mechanical stamping,coinciding with the technological developments of the time.The result is useful for research on the manufacturing technique of coins in the Tibetan area.