Investigation Of Tribocorrosion Behaviour Of 316L Coated H BN With Electrophoretic Deposition Technique


Bozkurt Y. B. , Atik B., Kovacı H., Yetim A. F. , Çelik A.

9th International Conference on Advanced Technologies, İstanbul, Turkey, 10 - 12 August 2020, pp.3

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.3
  • Erzincan Binali Yildirim University Affiliated: Yes

Abstract

The corrosion and wear resistance is of great importance for biometals in terms of biocompatibility and biomechanical interaction within the human body. Due to the nature of metals, their active structures cause their biodegradation within a certain period of time. Body fluids produced by living organism create highly effective corrosive damage on metallic surfaces. In addition, metallic surfaces that can be worn mechanically spread in the form of particles in the body, creating a toxic effect. These problems can be overcome by accumulating passive films on the surface of metallic implants. There are many studies related to different methods in the literature for the production of these films. One of these methods is electrophoretic deposition (EPD). The coatings made using the electrophoretic deposition method play a role in increasing wear and corrosion resistance, especially for implants used in the biomedical field. By producing ceramic-derived coatings, non-bioactive structures can be obtained by applying them on metallic biomaterials. Corrosion and wear resistance of the metal-based implant material is increased with thin films containing metal oxides, nitrides, borides and similar nonmetallic structures. Osseointegration can be improved by covering spinal implants, bone plates and screws with EPD used in the field of orthopedics. In addition, high tribo- corrosion resistance can be developed, which is a very important feature for most implant groups. In this study, it was coated with 316L stainless steel used in the field of orthopedics by using the hexagonal boron nitride (h-BN) EPD method, which does not show any biodegradable properties, and the tribocorrosion resistance is increased. For this purpose; 316L base material is coated with solutions prepared at different concentrations, and the resistance of tribocorrosion in the simulated body fluid was investigated. Tribocorrosion process was carried out under 2 N load and was completed with open circuit potential (OCP) and potentiodynamic polarization scan. Maximum performance is obtained in thin film produced with optimum coating conditions.