Analysis of corrosion rate and surface characteristics in substitution bone implant material with corrosive media simulated body fluid (SBF)

Abstract

Bone is a basic part of the human skeletal system which serves as the main foundation of the human skeletal system. and millions of people suffer from bone damage caused by natural diseases or accidents. Bone implants are used to replace, assist or augment diseased or injured biological tissue. One of the medical implants in use today is bone implants. bone implants that are currently commonly used are bone implants with a type of metal material because they have high strength, stiffness, and stiffness. In addition, metal-type bone implants can withstand higher loads than other types of implants. SS 316 L material is often used as a bone implant because it has good mechanical properties and a low corrosion rate. But with a low corrosion rate and good biocompatibility properties, SS 316 L is limited in its use in clinical application. This study aims to find substitute material as bone implants. testing using specimens in the form of ST-41 steel plates coated with Titanium Nitride (TiN) instead of bone implants. Immersion of specimens was carried out with corrosive media in the form of Simulated Body Fluid (SBF) as corrosive media. Testing uses a Scanning Electron Microscope (SEM) to analyze the surface characteristics of the specimen. The results of this study were no damage or apatite coating that protected the surface of the specimen with immersion for 12 hours. While at 336 hours immersion, there is a corrosion point on each specimen. However, the ST-41 steel specimen contained apatite grains on its surface.