Wear and Corrosion Resistance of a-C:H:SiO x Coating on Medical 316L Stainless Steel

A. S. Grenadyorov, V. O. Oskirko, A. A. Solovyev, K. V. Oskomov, I. A. Khlusov

Research output: Contribution to journalArticlepeer-review

Abstract

The paper studies the adhesion, mechanical, tribological, anti-corrosion properties and the surface morphology of a-C:H:SiOx coatings after their plasma-assisted chemical vapor deposition onto the grade AISI 316L stainless steel substrate applying a mid-frequency bias voltage to the substrate. The coating structure, chemical composition and surface morphology are studied using the Raman and energy-dispersive x-ray spectroscopies, atomic force and scanning electron microscopies. The tribological properties of the AISI 316L stainless steel are examined using the ball-on-disk method against the WC-Co and 100Cr6 balls under a 3-10 N load. The 400 m run test shows the low friction coefficient (0.07-0.16) and the low wear rate (5·10−7-8.3·10−7 mm3/N m) of the a-C:H:SiOx-coated steel sample against both ceramic and metallic counterbodies under the same loads. It is found that the wear rate of the coating is two orders of magnitude lower than that of the steel substrate. Deposition of the a-C:H:SiOx coating on the steel surface reduces the corrosion rate from 11.3·10−4 to 61.7·10−6 mm/year. Moreover, the a-C:H:SiOx coating deposition changes the positive surface potential to negative.

Original languageEnglish
JournalJournal of Materials Engineering and Performance
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • carbon-based coatings
  • corrosion resistance
  • steel
  • surface potential
  • wear testing

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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