Earticle

초록

영어

In the 6th and 7th centuries, 5 iron artifacts excavated form the Baekje Stone Tomb in Guryong-ri site, Ungcheon, Boryeong, were studied. The sample were metal microscopic observation, SEM-EDS analysis and Raman micro-spectroscopy analysis were conducted to understand the metallurgical characteristics. The microstructure observation showed the presence of ferrite and pearlite throughout, and differences in carbon content existed depending on the direction. Non-metallic inclusions were in the form of long lines, and most of them were wüstite, fayalite. It is indicated that the artifacts were forge welded using hypoeutectoid steel, with signs of carburizing and decarburizing processes. Some crystals with high P2O5, TiO2, CaO content were identified as sarcopside, ulvöspinel, and perovskite, respectively, through Raman spectroscopy. A comparison of the results with previous studies on the sites of Bujang-ri site in Seosan and Bongseon-ri site in Seocheon, which are adjacent sites in the coastal area, revealed that, while heat treatment technology was available, the artifacts were not heat-treated considering the purpose for use for these artifacts. The chemical composition of the non-metallic inclusions P2O5, TiO2, CaO were plotted in proportions to SiO2 and compared with adjacent sites. Considering that the P2O5/SiO2 ratio was widely distributed, the refining technology was not uniform. In addition, the TiO2/SiO2 ratio was found to be higher than that of other sites, meaning that a titanium-containing ore was used to manufacture the artifacts, unlike in surrounding sites, but it is not detected in all artifacts, so it may have been affected by various factors such as furnace walls in addition to raw materials. Although slag formers were used, considering the CaO/SiO2 ratio and the (Al2O3/SiO2)/(CaO/SiO2) ratio, which appear to be similar to the surrounding sites, but it is possible that CaO containing raw ore was used because it is also affected by the components of raw ore. As a result of the study, it is highly likely that ore different from that of the surrounding sites was used for production, but a more comprehensive comparative study with the surrounding sites is needed in the future.

목차

ABSTRACT
1. INTRODUCTION
2. SAMPLES AND ANALYSIS METHOD
3. RESULTS
3.1. Iron axe (No. 1)
3.2. Iron axe (No. 2)
3.3. Iron chisel (No. 3)
3.4. Iron axe (No. 4)
3.5. Iron chisel (No. 5)
4. DISCUSSION AND CONCLUSION
REFERENCES

키워드

저자

• Eun Young Choi [ Department of Cultural Heritage Conservation Science, Kongju National University, Gongju, 32588, Korea ]
• Nam Chul Cho [ Department of Cultural Heritage Conservation Science, Kongju National University, Gongju, 32588, Korea ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  보존과학회지 [Journal of Conservation Science]

• 간기

  연5회

• pISSN

  1225-5459

• eISSN

  2287-9781

• 수록기간

  2003~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 602 DDC 700