A Study on Manufacturing Technique and Corrosion Characteristics of Bronze Dirk, Bronze Sword, Bronze Mirror in Early Iron Age Excavated from the Osong Site in Cheongju
نویسندگان
چکیده
Metallography, SEM-EDS, and Raman Micro-Spectroscopy analysis were conducted on bronze dirk, sword, mirror excavated from the pit tomb No. 1-1 at 12th Point of Osong Site in Cheongju to study manufacturing techniques corrosion properties. The sword are judged be binary alloys Cu(79.16∼79.89 wt%)-Sn (19.12∼20.34 wt%). microstructure is a cast structure composed δ phase (α+δ) eutectoid, no heat treatment was performed. As result classifying characteristics, it confirmed that Type I. EDS subsurface area, tin oxide located as selective analysis, products Cassiterite Malachite identified for dirk mirror. secondary metallic copper mainly present hole left by Pb particles found 100.00 wt% Cu confirming all them high-purity copper.
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ژورنال
عنوان ژورنال: Bojon-gwahakoeji
سال: 2023
ISSN: ['1225-5459', '2287-9781']
DOI: https://doi.org/10.12654/jcs.2023.39.1.06