Abstract
Abstract Nb–TiO2 alloys, strengthened by oxide dispersion (ODS), have good properties for application in surgical implants. These alloys have been processed by a powder metallurgy technique. Compaction and sintering tests were carried out in order to understand the microstructural evolution of these materials during processing. Oxygen degassing takes place due to the volatilization of niobium suboxides during highvacuum sintering. Additions of TiO2 up to 1 wt.% caused an increase in the sinterability of niobium, especially during the first stage of sintering. An explanation for the role of TiO2 particles during sintering is also proposed.
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