Microstructure and properties of Co-Cr-Mo alloy as a function of isothermal holding time

Abstract

Currently, Co-Cr-Mo alloys become attractive in the field of biomaterials for surgical implants because of their strength, corrosion resistance and biocompatibility. In this work the influence of sintering time on the microstructure and properties of Co-Cr- Mo alloy has been investigated. The alloy powder were mixed with 2 wt. % of binder and compacted at 500 MPa. Samples were sintered isothermally at 1250 °C in argon atmosphere with five different sintering times starting from 30 minutes up to 150 minutes. Experimental results show that the values of bulk density increase with increasing of sintering time and the range of grain size were between 25.6 – 37.7 µm.