Tritium permeation experiments using reduced activation ferritic/martensitic steel tube and erbium oxide coating

被引：25

作者：

Chikada, Takumi ^{[1
]}

Shimada, Masashi ^{[2
]}

Pawelko, Robert J. ^{[2
]}

Terai, Takayuki ^{[1
]}

Muroga, Takeo ^{[3
]}

机构：

[1] Univ Tokyo, Tokyo, Japan

[2] Idaho Natl Lab, Idaho Falls, ID USA

[3] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

来源：

FUSION ENGINEERING AND DESIGN | 2014年 / 89卷 / 7-8期

关键词：

Tritium; Permeation; Coating; Erbium oxide; Memory effect;

D O I：

10.1016/j.fusengdes.2014.01.024

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：

Low concentration tritium permeation experiments have been performed on uncoated F82H and Er2O3-coated tubular samples in the framework of the Japan-US TITAN collaborative program. Tritium permeability of the uncoated sample with 1.2 ppm tritium showed one order of magnitude lower than that with 100% deuterium. The permeability of the sample with 40 ppm tritium was more than twice higher than that of 1.2 ppm, indicating a surface contribution at the lower tritium concentration. The Er2O3-coated sample showed two orders of magnitude lower permeability than the uncoated sample, and lower permeability than that of the coated plate sample with 100% deuterium. It was also indicated that the memory effect of ion chambers in the primary and secondary circuits was caused by absorption of tritiated water vapor that was generated by isotope exchange reactions between tritium and surface water on the coating. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1402 / 1405

页数：4

共 8 条

[1] Surface behaviour in deuterium permeation through erbium oxide coatings [J].