Suppression of vacancy formation and hydrogen isotope retention in irradiated tungsten by addition of chromium
发布时间：2023-10-19点击次数：
- DOI码：10.1016/j.jnucmat.2021.153449
- 发表刊物：Journal of Nuclear Materials
- 关键字：Tungsten, Chromium, Deuterium retention, Ion irradiation
- 摘要：To study the effect of the content of chromium (Cr) in the tungsten (W) matrix on the vacancy formation and retention of hydrogen isotopes, the samples of the W-0.3 at.% Cr alloy were irradiated with 6.4 MeV Fe ions in the temperature range of 523–1273 K to a damage level of 0.26 displacement per atom (dpa). These displacement-damaged samples were exposed to D 2 gas at a temperature of 673 K and a pressure of 100 kPa to decorate ion-induced defects with deuterium. The addition of 0.3 at.% Cr into the W matrix resulted in a significant decrease in the retention of deuterium compared to pure W after irradiation especially at high temperature ( ≥773 K). Positron lifetime in W-0.3 at.% Cr alloy irradiated at 1073 K was almost similar to that for non-irradiated one. These facts indicate the suppression of the formation of vacancy-type defects (monovacancies and vacancy clusters) by 0.3 at.% Cr addition, which leads to the significant reduction in deuterium retention in W-0.3 at.% Cr alloy.
- 第一作者：Jing Wang
- 论文类型：期刊论文
- 通讯作者：Yuji Hatano
- 论文编号：153449
- 期号：559
- 是否译文：否
- 发表时间：2021-12-03
- 收录刊物：SCI