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Monday, March 17, 2008 - 2:25 PM
Convention Center, Second Level, 220 (Ernest N. Morial Convention Center)
A Sampling Method and Data Evaluation of Archaeological Samples to Support Long-Term Corrosion Prediction
As natural analogues for the long-term corrosion behavior of overpack materials such as carbon steel data about the extent of corrosion from archaeological iron artifacts buried in soil provide useful information as supporting evidence for the safety assessment of nuclear waste disposal. Although a lot of corrosion data are necessary to guarantee the validity of the long-term behavior, archaeological samples are invaluable but difficult to analyze.
The purpose of this study is to investigate the corrosion behaviour of an iron plow surrounded by soil excavated from Oda Castle in Japan. Usually, archaeological samples are carefully excavated and removed from the soil using a small brush and shovel; therefore, the environment around the sample, e.g. redox condition, changes during sampling. We non-destructively measured the thickness of rust of the iron sample in the soil itself using X-ray CT without contact with the atmosphere and analyzed various chemical components and microorganisms. The results show the corrosion environment of the sample was slightly oxidizing. The data were compared with other data from archaeological samples from nineteen remains examined by JAEA.
The purpose of this study is to investigate the corrosion behaviour of an iron plow surrounded by soil excavated from Oda Castle in Japan. Usually, archaeological samples are carefully excavated and removed from the soil using a small brush and shovel; therefore, the environment around the sample, e.g. redox condition, changes during sampling. We non-destructively measured the thickness of rust of the iron sample in the soil itself using X-ray CT without contact with the atmosphere and analyzed various chemical components and microorganisms. The results show the corrosion environment of the sample was slightly oxidizing. The data were compared with other data from archaeological samples from nineteen remains examined by JAEA.
See more of Research Topical Symposium - Corrosion in Nuclear Waste Systems
See more of Research Topical Symposium
See more of The CORROSION 2008 Conference and Expo (March 16-20, 2008)
See more of Research Topical Symposium
See more of The CORROSION 2008 Conference and Expo (March 16-20, 2008)