Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7964649 | Journal of Nuclear Materials | 2016 | 4 Pages |
Abstract
Reduced Activation Ferritic/Martensitic (RAFM) steels have been considered as the most promising candidate structure materials for a fusion reactor. In the recent decades, two new types of RAFM steels, called China Low Activation Martensitic (CLAM) steel and China Low-activation Ferritic (CLF-1) steel, have been developed. The gas evolution permeation technique has been used to investigate diffusive transport parameters of deuterium through CLAM and CLF-1 over the temperature range 623 â¼Â 873 K at deuterium pressure of 105 Pa. The resultant transport parameters are: Φ (mol. mâ1 sâ1 Paâ1/2) = 5.40 Ã 10â8 exp (â46.8 (kJ. molâ1)/RT), D(m2 sâ1) = 3.81 Ã 10â7 exp(â24.0(kJ. molâ1)/RT) and S (mol. mâ3 Paâ1/2) = 1.42 Ã 10â1 exp(â22.8(kJ. molâ1)/RT) for CLAM; while Φ(mol mâ1 sâ1 Paâ1/2) = 1.76 Ã 10â8 exp(â43.9(kJ. molâ1)/RT), D(m2. sâ1) = 1.02 Ã 10â7 exp(â16.9(kJ. molâ1)/RT) and S(mol. mâ1 Paâ1/2) = 1.73 Ã 10â1 exp(â27.0(kJ. molâ1) /RT) for CLF-1. The results show that CLAM is more permeable than CLF-1, thus it is easier for hydrogen isotopes to transport and be removed.
Keywords
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Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Bo Wang, Lingbo Liu, Xin Xiang, Yongchu Rao, Xiaoqiu Ye, Chang An Chen,