期刊论文

Behavior of Deuterium Diffusion and Permeation in S22 Alloy Steel

中文

原子能科学技术

1000-6931

2017

51

10

1853-1858

10.7538/yzk.2017.51.10.1853

国家磁约束聚变能专项资助

本校为第一机构

在分别采用光学显微镜和辉光放电光谱仪获得S22合金钢的金相显微组织和元素成分的基础上,利用已经过氘渗透速率定量标定的渗透实验装置,研究了S22合金钢在400~600 ℃下的氘扩散渗透行为,得到了氘在S22合金钢中的渗透率和扩散系数。对比分析了500 ℃时纯D_2和He+1%D_2下S22合金钢的氘渗透数据,结果表明,随氘分压的降低,氘在S22合金钢中的扩散渗透孕育期增加,氘渗透速率降低,但即使在较低氘分压下依然有氘渗透现象。该结果可为高温气冷堆、快堆等先进反应堆在使用S22合金钢时进行必要的氚渗透防护及其安全分析提供理论与数据支持。

The microstructure and chemical composition of S22 alloy steel (S22) were measured by using a optical microscope and a glow discharge spectrometer, respectively. The behavior of deuterium diffusion and permeation in S22 was investigated by using a gas permeation apparatus which was calibrated by a standard leak. The permeability and diffusion coefficient of deuterium at the range of 400-600℃in S22 were measured and calculated. Deuterium permeation in S22 was compared between pure D2and 1% D2balanced with He. The results show that the diffusion and permeation incubation period of deuteriu...