Analysis of corrosion rate at bone implant replacement materials with immersion time variations in simulated body fluid

Abstract

Biomaterials are materials used to replace parts of living systems. 316 L stainless steel has long been used as a substitute material for bone dislocation victims. This research aims to substitute 316 L stainless steel bone implant material with Cr-Ni coated ST 41 carbon steel which has been immersed with varying time-intensity with Simulated Body Fluid. Material testing uses the method of potentiodynamic polarization, electrochemical impedance spectroscopy, and Scanning Electron Microscope. The results of this study are in the form of a comparison of corrosion rate and surface characteristics between 316 L stainless steel and Cr-Ni coated ST 41 Carbon Steel. The immersion time of the material for 12 hours and 366 shows a low corrosion rate with a corrosion rate of 0.0051714 mm year−1 with and 0.001557 mm year−1 for ST41 carbon steel material with Cr-Ni coating, whereas in Stainless Steel 316 L has a corrosion rate value of 0.0029546 mm year−1 and 0.0013166 mm year−1. Surface characteristics show insignificant differences between ST41 steel with Cr-Ni coating and 316 L stainless steel. The results of the study show that Cr-Ni coated ST41 carbon steel material can substitute 316 L stainless steel as a biomaterial in bone implants because it has a low corrosion rate and different insignificant surface characteristics.

Application of Psidium Guajava Leaf Extract as an Organic Inhibitor in Acid Solution and Temperature Variation

“…Corrosion is defined as an irreversible interfacial reaction of a material (metal, ceramic, polymer) with its environment, resulting in the material's consumption or dissolution into environmental components [1]. Corrosion cannot be avoided or eliminated but can be controlled [2]. NACE International, the leading authority dealing with corrosion, started a study in 2002 to estimate corrosion costs in the United States.…”