Effect of fluorine ion implantation on the microstructure and microhardness of AISI 440C stainless steel

K. Hanamoto, M. Sasaki, T. Miyashita, Y. Kido, Y. Nakayama, Y. Kawamoto, M. Fujiwara, R. Kaigawa

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

AISI 440C stainless steel along with pure iron and chromium have been implanted with 30 keV fluorine ions at doses from 5 × 1016 to 6 × 1017 ions/cm2 and surface hardnesses of the 440C steel have been examined. Implanted regions inside the specimens were studied by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results of XPS and XRD measurements indicate the formation of FeF2 and suggest small grains of CrF2 and non-stoichiometric chromium fluorides in 440C steel. It may be concluded that an increase of the surface hardness in fluorine implanted 440C steel is related to precipitation of metal fluorides and surface oxidation.

Original languageEnglish
Pages (from-to)228-232
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume129
Issue number2
DOIs
Publication statusPublished - Jul 1997
Externally publishedYes

Keywords

  • 440C steel
  • Fluorine ion implantation
  • Vickers hardness
  • X-ray diffraction
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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