Surface engineering to improve tribological performance of Ti-6Al-4V

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  • University of Birmingham


A series of thermal oxidizing treatments has been carried out on Ti-6Al-4V alloy at temperatures ranging from 600 to 850 °C to develop a new surface engineering technique for Ti-6Al-4V and other titanium alloys. Systematic characterization of the thermal oxidation treated surface layers was performed using GDS, XRD, SEM, and nanoindentation testing. Ball on disc friction tests show that the coefficient of friction of a Ti-6Al-4V disc against an alumina ball was significantly reduced after oxidation treatment. The rolling-sliding wear resistance of Timetal 6-4 material against hardened 709M40 steel under lubricated conditions has been increased by thermal oxidation (TO) treatment to such an extent that it is even superior to that of the steel counterpart. The results also show that the electrochemical corrosion resistance in 3%NaCl solution is improved by proper TO treatment.


Original languageEnglish
Pages (from-to)402-406
Number of pages5
JournalSurface Engineering
Issue number5
Publication statusPublished - 1997