Formation, characterization and deuterium permeation of Al2O3/Fe-Al layers on SS-316L surface

被引：2

作者：

Yang, Feilong ^{[1
]}

Xiang, Xin ^{[1
]}

Chen, Chang'an ^{[1
]}

Hu, Li ^{[1
]}

Ma, Ce ^{[1
]}

Zhang, Guikai ^{[1
]}

Song, Yaqi ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Mat, Mianyang 621908, Peoples R China

来源：

FUSION ENGINEERING AND DESIGN | 2024年 / 209卷

基金：

中国国家自然科学基金;

关键词：

Tritium permeation barrier; Oxide film; SS-316L; TRITIUM PERMEATION; BARRIER DEVELOPMENT; COATINGS; ANTICORROSION; CHROMIUM; OXIDE; IRON; SS;

D O I：

10.1016/j.fusengdes.2024.114735

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

316L austenitic stainless steel (SS-316L) is the most promising candidate structural material facing tritium in fusion reactors. However, tritium permeation of SS-316L at high temperatures will lead to loss of tritium, which ultimately generates radiological hazards and challenges tritium self-sufficiency. Preparing tritium permeation barriers (TPBs) on SS-316L surfaces is a critical way to solve this problem. In this study, Al2O3/Fe-Al coatings were applied to the SS-316L surface through an "aluminizing + oxidation" process, followed by a detailed analysis of the microstructures and their deuterium-resistant properties. Results delivered that the prepared coating structure comprises a 10-micron-thick Fe-Al transition layer and a dense hundred-nanometer-thick Al2O3 film. The deuterium resistance of the coating is ranking, where the deuterium permeability can be reduced by three orders of magnitude at 500 degrees C.

引用

页数：9

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