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| Abstract |
Characterization of surface impurities on SUS-316 stainless steel was performed with an Auger electron spectroscopy, the surface of which was prepared in two ways. Oxygen impurity was not observed on ...the surface annealed at 1273K in vacuum but segregation of appreciable amount of sulfur was observed. A duplex oxide layer of chromium and iron oxides was observed on the surface exposed to air at room temperature after vacuum annealing. Summarizing these experimental results and the data of our previous experiment on measurement of dissolution rate of gaseous tritium into the present stainless steel, the barrier effect of oxide film on the dissolution rate of gaseous tritium into stainless steel was discussed. The disappearance of barrier effect of the present duplex oxide film under a reducing conditions was ascribed to the reconstruction of oxide film resulted from the reduction of top layer of iron oxide.show more
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