Non-destructive analyses of iron sword excavated from Ohtake-nishi archaeological site in Osaka Prefecture

Mitsui, Seiichiro

Yaoshiritsu Rekishi Minzoku Shiryokan Kenkyu Kiyo, (24), p.73 - 80, 2013/03

AA2013-0015.pdf:2.54MB

An ancient iron sword (ca 2,000 year old) was excavated from Ohtake-nishi archaeological site in Yao City, Osaka Prefecture. To understand corrosion state of the sword, we analysed thickness of corrosion layer with a X-ray CT and corrosion products with a portable XRD/XRF. As results, we found that the thickness of corrosion layer on the surface of the sword was generally uniform and identified siderite (FeCO) and goethite (-FeOOH) as corrosion products.