Tantalum thin films deposition by pulsed laser (PLD) Technique on stainless steel SS316L substrate and studying the improvement of its surface properties

Abstract

In This Work, thin films of Tantalum metal were deposited on Stainless Steel (SS316L) substrates using Pulsed Laser Deposition (PLD) technique. Several modern techniques were used to characterize these films, including: X-ray diffraction (XRD) technique, Micro-Hardness test and Tafel Extrapolation mathematical technique for testing the corrosion resistance of these films compared to the reference metal (SS316L). These Tantalum (Ta) thin films were deposited on Stainless Steel (SS316L) substrates with 110 nm thickness. The measured composite micro-hardness values ​​of Tantalum film and substrates showed a clear improvement compared to The reference substrates. The corrosion test in natural physiological saline solution (0.9% NaCl) showed that the corrosion resistance of Tantalum film deposited on steel substrates was significantly increased compared to its values ​​recorded for reference stainless steel substrates. These results give a clear idea for placing Tantalum (Ta) films on biomedical materials made of stainless steel (SS316L), with the aim of improving their surface properties and biocompatibility as Tantalum metal has multiple advantages, including high corrosion resistance and biocompatibility