Co-Cr-Mo-based composite reinforced with bioactive glass

The powder metallurgy (PM) technology was used to produce a porous Co-Cr-Mo-based composite material with the bioactive glass (S2) addition of S wt.%, 10 wt.% and 15 wt.%. The results show that the addition of bioglass to the matrix of Co-Cr-Mo alloy, as well as rotary cold repressing and heat treatment of sintered specimens can cause significant changes in the microstructure, mechanical and corrosion properties of composite materials in comparison with the pure porous Co-Cr-Mo alloy. A significant increase in the hardness, yield strength and corrosion resistance of the composites was observed with increasing the bioglass volume fraction. Although all PM samples are in a passive state, the higher corrosion resistances were obtained in the case of the composites with bioglass additions. Superior mechanical properties were achieved in the case of composite with 10 wt.% of bioglass. (C) 2008 Elsevier B.V. All rights reserved.