Tritium permeation through clean incoloy 800 and sanicro 31 alloys and through steam oxidized incoloy 800
作者： J. T. Bell , J. D. Redman , H. P. Bittner
DOI: 10.1007/BF02661206
关键词: Metallurgy 、 Tritium 、 Temperature cycling 、 Surface oxidation 、 Electroplated nickel 、 Permeation 、 Incoloy 、 Thermal shock 、 Materials science 、 Oxide 、 Nuclear chemistry
摘要: The tritium permeabilities,DK, of Incoloy 800 and Sanicro 31 have been determined for tube samples that were protected from surface oxidation by electroplated nickel. permeabilities these analogous alloys over the 400 to 750°C range essentially equal;DK = 0.566 exp (-16120/RT) 0.367 (-15610/RT cm3(T2 · STP) mm/(cmsu2 min torr1/2), respectively. effects ofin-situ steam observed reduce factors up at 150 days. Permeation rates through oxide-coated be 0.5 rather than 1.0 power dependent on pressure. Permeabilities oxides formed 520, 660 725°C 5.4 E-11, 4.9 E-10 2.4 E-9 cc (T2,STP) mm/(cm2 Severe thermal shock was destroy permeation barrier characteristics oxide coatings while mild temperature cycling had no observable coated material.
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