Microstructure of tungsten coatings effect on deuterium plasma-driven permeation through RAFM steel

被引：3

作者：

Yang, Kai ^{[1
]}

Xu, Yue ^{[1
,2
,3
]}

Tian, Xiao-Ping ^{[1
]}

Luo, Lai-Ma ^{[1
,2
,3
]}

Ni, Jun-Jie ^{[4
]}

Wu, Yu-Cheng ^{[1
,2
,3
]}

机构：

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China

[2] Natl Local Joint Engn Res Ctr Nonferrous Met & Pro, Hefei 230009, Peoples R China

[3] Copper Alloy & Forming Engn Res Ctr Minist Educ, Hefei 230009, Peoples R China

[4] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China

来源：

NUCLEAR MATERIALS AND ENERGY | 2023年 / 37卷

基金：

中国国家自然科学基金;

关键词：

Tungsten coating; RAFM steel; Plasma -driven permeation; Hydrogen isotope; TRITIUM PERMEATION; HYDROGEN; RETENTION; TRANSPORT; BEHAVIOR;

D O I：

10.1016/j.nme.2023.101557

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：

Tungsten (W) coatings with different morphologies were deposited on CLF-1 steel by changing the sputtering time and discharge power using the magnetron sputtering method. Deuterium (D) plasma-driven permeation (PDP) experiments through W-coated CLF-1 were then carried out in the temperature range of 583-833 K. The obtained results showed that dense W coatings reduced steady-state permeation flux and prolonged the time of permeation flux reaching steady-state. Due to the existence of high-density intrinsic defects, D effective diffusivities of the coating are lower than that of bulk W. The increase of coating thickness reduced permeation flux. In addition, by changing the bias voltage and studying the influence of incident ion energy on D-PDP, it is found that the introduction of W coating affected the overall D transport by re-balancing the bulk diffusion and surface recombination processes. The thickness and microstructure of W coatings played a key role in determining the D steady-state permeation flux at varying temperatures.

引用

页数：8

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