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一、检验结果铜刻刀残片(M12:2)表面覆盖黑漆古,乌黑光洁,但有一些锈蚀小孔穿透表面黑漆古层深入到金属基体上。此铜刻刀残片质脆,从上面摄取两小块样品,可见到新的断口呈银白色。一块样品经原子吸收光谱分析,其成分为铜69.8%,锡30.1%,铁0.06%,铅无,总计99.9%。分析结果表明,此铜刻刀含有较高的锡。由于样品在分析前彻底清除了表面的黑漆古层及氧化锈蚀层,样品内部金属未有任何锈蚀产物存在,所以分析的元素总合达99.9%,分析的准确性较高。
First, the test results Copper engraving knife fragments (M12: 2) surface covered with black lacquer ancient, black and smooth, but some rust holes penetrate the surface of the black lacquer deep into the metal substrate. This copper engraving knife fragile pieces, from the above intake of two small samples, you can see the new fracture was silver-white. A sample by atomic absorption spectrometry, the composition of 69.8% copper, tin 30.1%, iron 0.06%, lead-free, a total of 99.9%. Analysis results show that this copper knife contains a higher tin. Since the sample completely eliminates the black lacquer layer and the oxidized rust layer before analysis, the metal inside the sample does not have any rust products, so the total amount of elements analyzed is 99.9%, and the accuracy of the analysis is high.