Wear and corrosion resistance enhancement of chromium surfaces through graphene oxide coating


Ozkan D., ERARSLAN Y., Kincal C., Gürlü O., Yagci M. B.

SURFACE & COATINGS TECHNOLOGY, vol.391, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 391
  • Publication Date: 2020
  • Doi Number: 10.1016/j.surfcoat.2020.125595
  • Journal Name: SURFACE & COATINGS TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Istanbul Technical University Affiliated: Yes

Abstract

Corrosion and wear protection of metals are crucial for all industrial applications. Graphene oxide (GO) is a chemically modified form of graphene and is highly promising for corrosion inhibition. Although corrosion protection of metal surfaces by the use of graphene oxide has been well investigated, anti-wear reduction of graphene oxide has not been studied especially under lubricated condition. In this work, Cr coated steel ring was coated with GO by atmospheric pressure chemical vapor deposition that hasn't been reported in the literature yet. The corrosion resistance of the coatings was evaluated by potentiodynamic polarization, immersion tests and the wear behavior of the coatings was investigated under lubricated conditions. Here we show that GO coated piston rings showed excellent corrosion resistance at extreme corrosive media. Our results also show that GO reacts with ZDDP and forms tribofilm that provides additional wear resistance to the ring, which resulted in very effective wear protection because of no wear scar observation on the ring surface.