Abstract
ABSTRACTSpark plasma sintering (SPS) technology was used to consolidate Ti-Ta-Ru powders and the effects of sintering parameters on the densification, corrosion and wear performance of the sintered compacts were investigated. Results showed that addition of Ta with small amount of Ru had significant influence on densification, hardness and corrosion behavior of the sintered alloy. When 9 vol.% and 1 vol.% Ru were added, the sintered density and hardness were 92.07% and 330 HV0.1 respectively. Furthermore, the addition of tantalum and ruthenium improve the corrosion and wear behaviours of Ti with a significant effect on the corrosion potential, Ecorr, and corrosion current density, Icorr, in 1 M HCl solution. The COF trend decreases upon the addition of Ta-Ru with relative improvement in wear resistance in Ti-10Ta and Ti-9Ta-1Ru as compared with commercially pure Ti. This decrease in COF is more gradual which may be attributed to the solid solution hardening offered by Ta and Ru in the matrix.
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