Nanocrystalline diamond coating of fusion plasma facing components

Samuele Porro, Gregory De Temmerman, Steve Lisgo, Phillip John, Isaela Villalpando, Jerry W. Zimmer, Bob Johnson, J. I B Wilson

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Nanocrystalline diamond layers were deposited by hot-filament CVD on several substrates including molybdenum tiles and foils, graphite blocks and silicon wafers. The structural characterisation of the deposited layers, achieved by SEM, AFM, Raman and X-ray photoelectron spectroscopies, showed the typical features of nanocrystalline diamond. A nanocrystalline diamond coated molybdenum tile was exposed to a fusion grade deuterium plasma in the MAST tokamak, with a plasma current of 700 kA, core electron temperature of about 0.6 keV, and total exposure time of about 1 s. The diamond coating showed good resistance to the extremely harsh conditions of the fusion plasma edge. © 2009 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)740-744
Number of pages5
JournalDiamond and Related Materials
Volume18
Issue number5-8
DOIs
Publication statusPublished - May 2009

Keywords

  • Fusion
  • Hot-filament CVD
  • Nanocrystalline diamond film

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