Abstract
The dearth of information on the tribological and oxidation behaviour of Ti-Ni-TiCN composites has been identified in the literature. Therefore, in this work the tribological and oxidation behaviour of spark plasma sintered Ti-6Ni-xTiCN composites were reported. Microstructural and phase analyses showed the evolution of hard phases of Ti2Ni intermetallic, in-situ formed TiN and unreacted TiCN within matrix of the composites which enhanced the hardness. The dry sliding wear across all tested loads and oxidation behaviour up to 800 °C of the composites were better than that of CP-Ti. Ti-6Ni-10TiCN composite exhibited the highest wear and oxidation resistance across the tested loads and oxidation condition, respectively. This was attributed to the uniform distribution of the reinforcing phases and the formation of the protective oxide layer on the surface of the sintered composites.
NSTL
Elsevier