Analysis And Repair Of The Technology Of The Bronze Patterns Of The Eastern Han Dynasty

Bronze smelting can be traced back to the era of Yao and Shun Yu,its production is an important symbol of civilization and progress,after the dynasties after the replacement,the development of bronzes in China Xia and Shang dynasties reached its peak.To the proportion of bronze in the Han Dynasty will account for less and less decoration is also simple and more plain.Bronze spread in the world of the way,in addition to the already popular and there are many unearthed in the archaeological excavations.In the unearthed bronze in the underground after a long buried,its body has been damaged by micro-organisms,need to repair the protection.To be repaired is a Eastern Han string pattern bronze Kam,this piece of bronze for the Chongqing area Longmen cemetery unearthed by Chongqing China Three Gorges Museum on behalf of the repair of an unearthed bronze.Artifacts are common in the shape of copper Kam,through the observation found that objects have deformation,loss,cracks and a series of disease characteristics.The surface of the object has produced a layer of green corrosion products and white hard knot.The bronze medal at the time may be used as a daily household.Therefore,from the historical value,the repair of this piece of bronze for the study of Bayu area of the development of bronzes have a certain value.From the scientific value,the corrosion of bronze products,scientific and technological analysis,but also allows us to better understand the corrosion process of bronze to improve our understanding of the means of cultural relics technology.In the analysis and testing process used in the operation of the main experimental qualitative and quantitative research methods,and literature investigation and practical operation of the combination of law.The qualitative and quantitative methods are mainly composed of X-ray fluorescence,scanning electron microscopy analysis and X-ray diffraction analysis.The elemental composition of the corrosion products is analyzed by X-ray fluorescence.The qualitative analysis is carried out.The components are determined by scanning electron microscopy.The structure of theform.To establish a direct understanding of the corrosion products.Finally,X-ray diffractometer was used to quantitatively analyze the composition of various substances.The results showed that the white hard knots were calcium carbonate and magnesium carbonate,and the green corrosion products were basic copper carbonate.And lead content has been very high,inferred as lead bronze.And there is no generation of compounds containing chloride ions,it is inferred that the corrosion product of this bronze is harmless.The bronze corrosion mechanism to do further study,found that basic copper carbonate is a common bronze corrosion.After a series of analyzes,the author in the use of environmentally friendly,scientific way to do a bronze ontology for the museum display exhibition repair practice.