Corrosion Characteristics of Bronze Artifacts Excavated from the Songguk-ri site in Buyeo According to Alloy Ratio and Manufacturing Techniques During the Goryeo Dynasty

Abstract

A comprehensive analysis of the corrosion characteristics of excavated bronze artifacts was conducted according to their alloy ratio and microstructure. Corroded by various factors, which resulted in different corrosion characteristics. Among these, corrosion may occur in the excavated bronze due to the difference in the alloy ratio, which is an internal factor. In this study, we tried to confirm the corrosion characteristics of the excavated bronze artifacts excavated from Songguk-ri site in Buyeo according to their alloy ratio and microstructure through a comprehensive analysis. The corrosion characteristics of the excavated bronze artifacts differed depending on the alloy ratio and microstructure, whereas bronze samples subjected to the corrosion tests were the same regardless of the alloy ratio and microstructure. Through this, the corrosion characteristics of excavated bronze artifacts can be determined based on the additional effects on pH, corrosion factors, and time in the burial environment which can affect metal ion movement, in addition to alloy ratio and microstructure. In the future, if a burial environment similar to the actual remains and a long-term corrosion test is conducted, it will be possible to confirm the corrosion mechanism as well as the corrosion characteristics of the excavated bronze artifacts.