ANALYSIS OF FLOW ACCELERATED ELECTROCHEMICAL CORROSION PROPERTIES OF DIFFERENT METALLIC BIOMATERIALS

Metallic biomaterials are commonly used in both

medical devices and the human body. It is effectively

used as a surgical intervention in the treatment of

different parts of the human body. The environment in

the human body differs physically and chemically. The

fluid in the body (physiological environment) creates a

corrosive environment for metal implants because it

contains various aggressive ions. Corrosion of

biomaterials leads to loss of surface functions and

structural integrity. The released corrosion products

cause allergic reactions, local pain and swelling. For

this reason, it is necessary to characterize the corrosion

properties of metallic biomaterials. In this study, 316L,

CP-Ti, Ti45Nb and Ti6Al4V were selected among the

metallic biomaterials and their corrosion and flow

accelerated corrosion (FAC) resistance were

investigated. The tests were performed in Simulated

Body Fluid (SBF) by taking Open Circuit Potential

(OCP) and Potentiodynamic Polarization (POTDYN)

measurements. Flow accelerated corrosion (FAC) tests

were performed using a peristaltic pump at a flow rate

of 10 ml/s. XRD analyzes of the four groups of

materials used were made. The corrosion and FAC

performances of these samples were compared.