Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure
The microstructure of tungsten, a primary candidate for the first wall of Tokamak devices, affects the retention and permeation of hydrogen isotopes. These have a close connection to the tritium inventory. In this work, the tungsten microstructure was tuned by annealing and intense 15,700 displaceme...
Main Authors: | , , , , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2020-08-01
|
Series: | Nuclear Materials and Energy |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179120300387 |
id |
doaj-b8c4c6fbca9f45b9aeef38c91dec3cc9 |
---|---|
record_format |
Article |
spelling |
doaj-b8c4c6fbca9f45b9aeef38c91dec3cc92020-11-25T02:36:02ZengElsevierNuclear Materials and Energy2352-17912020-08-0124100762Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructureLu Cai0Chuan-hui Liang1Xueyang Lv2Wei Jin3Lin-sen Zhou4Jun Hu5Dong-ping Wang6Xin-chun Mao7Biao Hu8Sen Yang9Hailong Xing10Xiaohong Chen11Ke-zhao Liu12Aart W. Kleyn13Chang-an Chen14School of Science, Xihua University, Chengdu 610039, China; Institute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, China; Corresponding authors.Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaSchool of Science, Xihua University, Chengdu 610039, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, China; Corresponding authors.The microstructure of tungsten, a primary candidate for the first wall of Tokamak devices, affects the retention and permeation of hydrogen isotopes. These have a close connection to the tritium inventory. In this work, the tungsten microstructure was tuned by annealing and intense 15,700 displacements per atom (dpa) keV-W-self-ion implantation. The samples were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The results reveal that the annealing treatment has little influence on the crystallite size but decreases the number of defects such as vacancies, which relates to the bulk microstructure. Moreover, ion implantation changes the sample surface from a smooth quasi-mirror to a grey morphology with various voids. The deuterium retention is suppressed by the decrease of bulk defects due to annealing, but does not present a saturation with the displacement damage increase. It is interesting to note that in permeation, the rate limiting step is bulk diffusion while the deuterium permeability is enhanced for samples with a surface modification. The possible permeation mechanisms and their relation with the sample microstructure are discussed in this work.http://www.sciencedirect.com/science/article/pii/S2352179120300387TungstenDeuteriumRetentionPermeationIon implantationAnnealing |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lu Cai Chuan-hui Liang Xueyang Lv Wei Jin Lin-sen Zhou Jun Hu Dong-ping Wang Xin-chun Mao Biao Hu Sen Yang Hailong Xing Xiaohong Chen Ke-zhao Liu Aart W. Kleyn Chang-an Chen |
spellingShingle |
Lu Cai Chuan-hui Liang Xueyang Lv Wei Jin Lin-sen Zhou Jun Hu Dong-ping Wang Xin-chun Mao Biao Hu Sen Yang Hailong Xing Xiaohong Chen Ke-zhao Liu Aart W. Kleyn Chang-an Chen Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure Nuclear Materials and Energy Tungsten Deuterium Retention Permeation Ion implantation Annealing |
author_facet |
Lu Cai Chuan-hui Liang Xueyang Lv Wei Jin Lin-sen Zhou Jun Hu Dong-ping Wang Xin-chun Mao Biao Hu Sen Yang Hailong Xing Xiaohong Chen Ke-zhao Liu Aart W. Kleyn Chang-an Chen |
author_sort |
Lu Cai |
title |
Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure |
title_short |
Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure |
title_full |
Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure |
title_fullStr |
Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure |
title_full_unstemmed |
Influence of annealing and keV-ion implantation into tungsten on deuterium retention and permeation: The dependence on bulk and surface microstructure |
title_sort |
influence of annealing and kev-ion implantation into tungsten on deuterium retention and permeation: the dependence on bulk and surface microstructure |
publisher |
Elsevier |
series |
Nuclear Materials and Energy |
issn |
2352-1791 |
publishDate |
2020-08-01 |
description |
The microstructure of tungsten, a primary candidate for the first wall of Tokamak devices, affects the retention and permeation of hydrogen isotopes. These have a close connection to the tritium inventory. In this work, the tungsten microstructure was tuned by annealing and intense 15,700 displacements per atom (dpa) keV-W-self-ion implantation. The samples were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The results reveal that the annealing treatment has little influence on the crystallite size but decreases the number of defects such as vacancies, which relates to the bulk microstructure. Moreover, ion implantation changes the sample surface from a smooth quasi-mirror to a grey morphology with various voids. The deuterium retention is suppressed by the decrease of bulk defects due to annealing, but does not present a saturation with the displacement damage increase. It is interesting to note that in permeation, the rate limiting step is bulk diffusion while the deuterium permeability is enhanced for samples with a surface modification. The possible permeation mechanisms and their relation with the sample microstructure are discussed in this work. |
topic |
Tungsten Deuterium Retention Permeation Ion implantation Annealing |
url |
http://www.sciencedirect.com/science/article/pii/S2352179120300387 |
work_keys_str_mv |
AT lucai influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT chuanhuiliang influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT xueyanglv influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT weijin influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT linsenzhou influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT junhu influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT dongpingwang influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT xinchunmao influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT biaohu influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT senyang influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT hailongxing influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT xiaohongchen influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT kezhaoliu influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT aartwkleyn influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure AT changanchen influenceofannealingandkevionimplantationintotungstenondeuteriumretentionandpermeationthedependenceonbulkandsurfacemicrostructure |
_version_ |
1724801784191385600 |