# Development of Tungsten Repair Technology by Atmospheric  Plasma Spraying of Tungsten and Friction Stir Processing

https://mdr.nims.go.jp/datasets/209427b7-38f7-4c57-83fc-e3c638ef920d

## File

- [Final Version Manuscript.pdf](https://mdr.nims.go.jp/filesets/ad7777ee-9e76-4113-a2aa-1867141a8e8a/download) ([Detail](https://mdr.nims.go.jp/filesets/ad7777ee-9e76-4113-a2aa-1867141a8e8a.md))

## Id

209427b7-38f7-4c57-83fc-e3c638ef920d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-10T00:42:04.775972Z

## Updated at

2024-09-13T03:30:26.975241Z

## Published at

2024-09-13T03:30:27.055488Z

## Doi

https://doi.org/10.48505/nims.4747

## First published url

https://doi.org/10.1007/s11666-024-01820-5

## Date published

2024-08-05

## Recorded date published

2024-8

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: Development of Tungsten Repair Technology by Atmospheric  Plasma Spraying
    of Tungsten and Friction Stir Processing
  title_type: original
  lang: en

## Description

- description: Tungsten (W) has a high melting point, excellent thermal conductivity,
    and irradiation resistance, making it the most promising plasma facing material
    for divertors in fusion reactors, which are currently under development. However,
    since the divertor is exposed to an extremely harsh environment, it is considered
    necessary to develop suitable and cost-effective repair techniques. In this study,
    the applicability of the atmospheric plasma spraying (APS) method using a gas
    shroud as a repair technique for W components was investigated, in particular
    the possibility of strengthening the repaired part by applying friction stir processing
    (FSP) as a post-treatment. It was found that the application of a gas shroud can
    suppress in-flight oxidation to some extent, even when the W is deposited in air.
    In addition, the FSP treatment reduced grain size and porosity, resulting in an
    increase in microhardness of approximately 37.5% compared to the base material
    (W substrate) and 203.5% compared to the as-sprayed material. The gas shroud APS
    and FSP post-treatments have been shown to have potential as repair techniques
    for tungsten components in future fusion reactors.
  description_type: abstract
  lang: en

## Creator

- name: Phuangphaga Daram
  role: author
  orcid: https://orcid.org/0000-0001-8937-6319
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials
- name: Yoshiaki Morisada
  role: author
  organization: Osaka University
  department: Joining and Welding Research Institute
- name: Takuya Ogura
  role: author
  organization: Osaka University
  department: Joining and Welding Research Institute
- name: Masahiro Kusano
  role: author
  orcid: https://orcid.org/0000-0002-5061-0195
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials
- name: JuHyeon Yu
  role: author
  organization: National Institutes for Quantum Science and Technology
  department: Rokkasho Institutes for Fusion Energy
- name: Makoto Fukuda
  role: author
  organization: National Institutes for Quantum Science and Technology
  department: Naka Institutes for Fusion Science and Technology
- name: Hidetoshi Fujii
  role: author
  organization: Osaka University
  department: Joining and Welding Research Institute
- name: Seiji Kuroda
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials
- name: Makoto Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-5064-9583
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: atmospheric plasma spray process
  schema: not_defined
- subject: divertor
  schema: not_defined
- subject: friction stir processing
  schema: not_defined
- subject: microstructure
  schema: not_defined
- subject: nuclear fusion reactor
  schema: not_defined
- subject: tungsten
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Thermal Spray Technology
  issn: '15441016'

## Conference



## Related item



## Funding

- identifier: NIFS21HDAF007
  funder_name: The NIFS Collaboration Research program

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## Fileset

- id: ad7777ee-9e76-4113-a2aa-1867141a8e8a
  filename: Final Version Manuscript.pdf
  content_type: application/pdf
  size: 6057687
  md5: 4af4fb5d2fdbc929c96fcdd7bf87cee6

## Thumbnail

fileset_id: ad7777ee-9e76-4113-a2aa-1867141a8e8a
filename: Final Version Manuscript.pdf