Publication detail

Cold Sprayed Tungsten Armor for Tokamak First Wall

ČÍŽEK, J. VILÉMOVÁ, M. LUKÁČ, F. KOLLER, M. KONDAS, J. SINGH, R.

Original Title

Cold Sprayed Tungsten Armor for Tokamak First Wall

Type

journal article in Web of Science

Language

English

Original Abstract

Harnessing nuclear fusion is a challenging task, in particular because of the demands put on the used materials. In tokamaks, future energy sources, the inner-most chambers are to be coated with dense coatings of W, or W-Cr-based alloys. So far, the attempts for such coatings formation by other methods failed due to oxidation, high porosity, insufficient adhesion, high specific surface, or even insufficient thickness below 10 mu m. Cold spraying seems a promising technology for the task. In our study, we demonstrate the first successful fabrication of thick pure W coatings. W-Cr and W-Cr-Ti coatings were further prepared without oxidation of the metals. All coatings exhibited high hardness levels, good interface quality with three tested substrates and, importantly, a promising potential for formation of stable Cr2WOx phases.

Keywords

cold gas kinetic spray; W-Cr; W alloys; oxidation shield; nuclear fusion; thick coatings; self-passivation; PFC; plasma facing components

Authors

ČÍŽEK, J.; VILÉMOVÁ, M.; LUKÁČ, F.; KOLLER, M.; KONDAS, J.; SINGH, R.

Released

7. 12. 2019

Publisher

MDPI

Location

BASEL

ISBN

2079-6412

Periodical

Coatings, MDPI

Year of study

9

Number

12

State

Swiss Confederation

Pages from

1

Pages to

15

Pages count

15

URL

https://www.mdpi.com/2079-6412/9/12/836

Full text in the Digital Library

http://hdl.handle.net/11012/188998

BibTex

@article{BUT163555,
  author="Jan {Čížek} and Monika {Vilémová} and František {Lukáč} and Martin {Koller} and Jan {Kondas} and Reeti {Singh}",
  title="Cold Sprayed Tungsten Armor for Tokamak First Wall",
  journal="Coatings, MDPI",
  year="2019",
  volume="9",
  number="12",
  pages="1--15",
  doi="10.3390/coatings9120836",
  issn="2079-6412",
  url="https://www.mdpi.com/2079-6412/9/12/836"
}