Surface modification of titanium alloys for combined improvements in corrosion and wear resistance

A. Bloyce, P. Y. Qi, H. Dong, T. Bell

Research output: Contribution to journalArticlepeer-review

205 Citations (Scopus)

Abstract

A simple and effective surface modification technique, namely palladium-treated thermal oxidation (PTO), has been developed in the present research. Comparative investigations on both corrosion and wear resistance have been carried out on surface-engineered titanium-based materials by conventional plasma nitriding (PN), thermal oxidation (TO), and the newly developed palladium-treated thermal oxidation (PTO). Both the TO- and PTO-treated materials have a significantly superior corrosion resistance in boiling HCl solutions compared to the PN-treated and untreated materials. The lifetime for the protective surface layer breakdown of the TO-treated titanium in boiling 20% HCl solution is about 13 times that of the PN-treated titanium, whereas the lifetime of the PTO-treated material has been increased fruther by a factor of 2.6 over the TO-treated material. The PTO-treated material has shown a better anti-scuffing capacity than the TO-treated material under oil-lubricated conditions. Characterisation of both the TO- and PTO-treated surface layers was performed using glow discharge spectrometry (GDS), X-ray diffraction (XRD) and scanning electron microscopy (SEM).

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalSurface and Coatings Technology
Volume107
Issue number2-3
DOIs
Publication statusPublished - 10 Sep 1998

Keywords

  • Corrosion resistance
  • Oxidising treatment
  • Palladium
  • Titanium
  • Wear resistance

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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