Investigation of the Influence of High-Pressure Torsion and Solution Treatment on Corrosion and Tribocorrosion Behavior of CoCrMo Alloys for Biomedical Applications

In this study, the influence of high-pressure torsion (HPT) processing parameters and solution treatment (ST) on corrosion tribocorrosion behavior CoCrMo (CCM) alloys was investigated for possible usage in biomedical applications. The CCM by using potentiodynamic scanning (PDS) electrochemical impedance spectroscopy (EIS) tests. Tribocorrosion tests were carried out a reciprocating ball-on-plate tribometer at 1 Hz, N load, 3 mm stroke length 2 h. All measurements performed potentiostat standard phosphate-buffered saline (PBS) body temperature (37 ± °C). samples characterized electron microscope (SEM), transmission (TEM), optical (OM), X-ray diffraction (XRD). deepness width wear tracks examined profilometer. results showed that HPT ST processes did not affect significantly resistance samples. However, ST-treated had higher material loss during sliding as compared to HPT-treated