Nitriding Treatment of Reduced Activation Ferritic Steel as Functional Layer for Liquid Breeder Blanket
Nitriding Treatment of Reduced Activation Ferritic Steel as Functional Layer for Liquid Breeder Blanket
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DOI：
10.1585/pfr.6.2405117
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发表时间：
2011-08
影响因子：
0.8
通讯作者：
M. Kondo;Takashi Watanabe;Teruya Tanaka;Dongxun Zhang;A. Sagara
中科院分区：
文献类型：
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作者：
M. Kondo;Takashi Watanabe;Teruya Tanaka;Dongxun Zhang;A. Sagara
氚渗透阻挡层、防腐蚀层等功能层的研制是熔盐型自冷聚变包层研制的关键技术。本文研究了还原活化铁素体钢JLF-1（Fe-9 Cr-2 W-0.1C）作为功能层的氮化处理特性。通过离子氮化处理或自由基氮化处理对钢表面进行氮化。从热力学稳定性的角度明确了钢表面的氮化特性。研究了熔盐Flinak中的热扩散率、氢渗透率和化学稳定性。结果表明，氮化处理在不降低热扩散率的情况下，改善了Flinak的相容性，但对氢渗透阻挡层的改善不大。
The development of functional layers such as a tritium permeation barrier and an anti-corrosion layer is the essential technology for the development of a molten salt type self cooled fusion blanket. In the present study, the characteristics of a nitriding treatment on a reduced activation ferritic steel, JLF-1 (Fe-9Cr-2W-0.1C) as the functional layer were investigated. The steel surface was nitrided by an ion nitriding treatment or a radical nitriding treatment. The nitridation characteristic of the steel surface was made clear based on the thermodynamic stability. The thermal diffusivity, the hydrogen permeability and the chemical stability in the molten salt Flinak were investigated. The results indicated that the nitriding treatment can improve the compatibility in the Flinak without the decrease of the thermal diffusivity, though there was little improvement as the hydrogen permeation barrier.