| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
Raw materials and manufacturing techniques of Japanese matchlock guns have been investigated by nondestructive methods. Iron artifacts contain trace elements that originate from the raw materials, smelting process, refining process, and manufacturing process. Among such trace elements, heavy elements are much less abundant than most light elements and tend to reflect the characteristics of the raw materials. The compositions of trace heavy elements of Japanese matchlock guns, traditional Japanese steels, slags, iron sands, and iron ores are determined by synchrotron high-energy X-ray fluorescence analysis (SR-XRF). As a result, there is a possibility that heavy elements that are detected in iron artifacts can be used as an indicator for estimating their provenance. The internal structures of Japanese matchlock guns are investigated with synchrotron high-energy X-ray radiography. The inlaid works, the repaired areas, and the distribution of nonmetallic inclusions in the barrel are observed. The results of this study willcontribute to the development of the nondestructive study of iron artifacts.
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