Abstract

AXEN, N. et al. Nitrided Ti-13Nb-13Zr in wear applications. R&D j. (Matieland, Online) [online]. 2001, vol.17, pp.27-34. ISSN 2309-8988.

The possibility of forming a thin hard titanium nitride layer on a titanium alloy with 13% Nb and 13 % Zr using a thermally enhanced diffusion process is investigated. In particular, the tribological performance of the surface treated titanium alloy in unlubricated and saline solution lubricated sliding contact is evaluated. The effects of the surface treatment on hardness, surface roughness and the microstructure of the surface zone are also studied. It was found that thin hard layers of titanium nitride compounds were formed on the surface of the alloy during the diffusion process. Although the properties of the surface layers were strongly dependent on the processing parameters, the friction and wear properties were considerably improved compared to the untreated alloy. In general terms, the choice of surface treatment parameters is a compromise between optimisation of surface or bulk properties.

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