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采用等离子体发射光谱 (ICP)、扫描电镜 (SEM)、 X射线电子能谱 (EDAX)、 X射线荧光光谱 (XRF)、金相显微分析等多种理化分析测试手段对天马——曲村周代晋国墓地出土的青铜残片的结构、成分进行了分析检测,比较了合金基体与表面层的成分变化以及表面的结构形貌,并探讨了造成锈蚀的因素以及具有特殊表面层的器物保存较好的原因。结果表明高锡相优先被腐蚀,沿晶界形成腐蚀通道。氯离子可穿过腐蚀层向基体延伸。自然腐蚀导致表面层富集锡、铅、硅、铁。表面富锡和具有各种标准自由能较低的氧化物使得带有特殊表面层的器物保存较好。
A series of physical and chemical analysis methods, such as ICP, SEM, EDAX, XRF and metallographic analysis, The structure and composition of the bronze fragments unearthed in the cemetery were analyzed and tested. The composition changes of the matrix and the surface layer of the alloy and the structure and structure of the surface were compared. The reasons for the corrosion and the preservation of the objects with the special surface layer were also discussed . The results show that the high tin phase is preferentially corroded and corroded along the grain boundary. Chloride ions can extend through the erosion layer to the substrate. Natural corrosion leads to surface enrichment of tin, lead, silicon and iron. Tin-rich surfaces and oxides with a wide range of standard free energies allow for better preservation of utensils with special surface layers.