Raman analysis of diamond-like carbon films deposited onto corrosion resistant alloys used for coronary stent fabrication

M. Veres, S. Tóth, M. Füle, J. Dobránszky, L. Major, M. Koós

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The structure of diamond-like carbon thin films prepared by radio frequency chemical vapor deposition onto the surface of different corrosion resistant alloys (304, 316L and Iconel 617) used for coronary stent fabrication was investigated by Raman spectroscopy excited by visible (488 nm) and near-infrared (785 nm) light. The effect of electrochemical polishing of the alloy surface and that of Ar+ ion pre-treatment on the structure of the forming film was also studied in case of substrate made of 316L material. It was found that in spite of simultaneous preparation the character of the formed amorphous carbon films depends on the type of the alloy. The layer developed on the surface of Fe-rich stainless steels (316L and 304) showed the most diamond-like character, while the Ni-rich Inconel alloy promoted the formation of layer with high graphitic sp2 cluster content. The Ar+ pre-treatment enhanced the adhesion and the diamond-like properties of the film while the electrochemical polishing was found to be unfavorable concerning the diamond-like character of the layer.

Original languageEnglish
Title of host publicationMaterials Science, Testing and Informatics III - Proceedings of the 5th Hungarian Conference on Materials Science, Testing and Informatics
Pages277-284
Number of pages8
Publication statusPublished - Dec 1 2007
Event5th Hungarian Conference on Materials Science, Testing and lnformatics - Balatonfured, Hungary
Duration: Oct 9 2005Oct 11 2005

Publication series

NameMaterials Science Forum
Volume537-538
ISSN (Print)0255-5476

Other

Other5th Hungarian Conference on Materials Science, Testing and lnformatics
CountryHungary
CityBalatonfured
Period10/9/0510/11/05

Keywords

  • Biomedical applications
  • Diamond-like carbon
  • Including carbon nitride
  • Plasma CVD
  • Raman spectroscopy

ASJC Scopus subject areas

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

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  • Cite this

    Veres, M., Tóth, S., Füle, M., Dobránszky, J., Major, L., & Koós, M. (2007). Raman analysis of diamond-like carbon films deposited onto corrosion resistant alloys used for coronary stent fabrication. In Materials Science, Testing and Informatics III - Proceedings of the 5th Hungarian Conference on Materials Science, Testing and Informatics (pp. 277-284). (Materials Science Forum; Vol. 537-538).