Micron-bubble formation on polycrystal tungsten due to low-energy and high-flux helium plasma exposure

Dai Nishijima, Mitsutaka Miyamoto, Hirotomo Iwakiri, Minyou Ye, Noriyasu Ohno, Kazutoshi Tokunaga, Naoki Yoshida, Shuichi Takamura

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Surface modification of polycrystal tungsten due to low-energy and high-flux helium plasma exposure was investigated. Micron-sized holes and bubbles were formed on the surface at a surface temperature of 2200 K even when the incident ion energy of helium was 10 eV. Hole formation was significantly reduced on the surface when the incident ion energy of helium was around S eV and no surface modification was seen at less than 5 eV. Coalescence of micron-sized helium bubbles was observed in the cross section of a W sample.

Original languageEnglish
Pages (from-to)561-564
Number of pages4
JournalMaterials Transactions
Volume46
Issue number3
DOIs
Publication statusPublished - Mar 1 2005

Fingerprint

Bubble formation
helium plasma
Helium
Tungsten
Polycrystals
polycrystals
tungsten
bubbles
Fluxes
Plasmas
helium
Surface treatment
Ions
energy
Coalescence
coalescing
surface temperature
ions
cross sections
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Micron-bubble formation on polycrystal tungsten due to low-energy and high-flux helium plasma exposure. / Nishijima, Dai; Miyamoto, Mitsutaka; Iwakiri, Hirotomo; Ye, Minyou; Ohno, Noriyasu; Tokunaga, Kazutoshi; Yoshida, Naoki; Takamura, Shuichi.

In: Materials Transactions, Vol. 46, No. 3, 01.03.2005, p. 561-564.

Research output: Contribution to journalArticle

Nishijima, D, Miyamoto, M, Iwakiri, H, Ye, M, Ohno, N, Tokunaga, K, Yoshida, N & Takamura, S 2005, 'Micron-bubble formation on polycrystal tungsten due to low-energy and high-flux helium plasma exposure', Materials Transactions, vol. 46, no. 3, pp. 561-564. https://doi.org/10.2320/matertrans.46.561
Nishijima, Dai ; Miyamoto, Mitsutaka ; Iwakiri, Hirotomo ; Ye, Minyou ; Ohno, Noriyasu ; Tokunaga, Kazutoshi ; Yoshida, Naoki ; Takamura, Shuichi. / Micron-bubble formation on polycrystal tungsten due to low-energy and high-flux helium plasma exposure. In: Materials Transactions. 2005 ; Vol. 46, No. 3. pp. 561-564.
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