Deposition Tantalum Pentoxide Coating on 2101 Lean Duplex Stainless Steel by Reactive Sputtering for Biomedical Applications

The most recent advancement in implant development is to meet materials that accelerate bone formation at the interface of bone implant and improve Osseo integration. Lean Duplex Stainless Steel as an implantation material needs several enhancements to the surface's properties chemically and physically. The application of surface modifications over the implant is an important method for improving the surface properties of LDX. Reactive Sputtering has some benefits for surface modification, including changing surface topography, increasing hardness and surface roughness, improving surface antibacterial activity and adhesion strength. Coating LDX 2101 DSS with Ta2O5 at times (2,4,6,8, and 10) hrs was used by a modified reactive sputtering technique. Analysis of surface characterization for samples before and then after the sputtering process was performed by micro hardness test, "x-ray diffraction", XRD analysis, "scanning electron microscope", SEM, and "field emission scanning electron microscope" (FE.SEM), "energy dispersive spectroscopy" (EDS), "Atomic force microscope" (AFM), Antibacterial study and Adhesion strength were done on the samples surfaces and compared to uncoated one. The current results indicate that the formation of Ta2O5 layers on the surface of the alloy was achieved, which would improve the surface characteristics, hardness, inhibited bacterial activity and adhesion strength of LDX 2101 DSS for orthopedic applications.