Improvement of Austenitic Stainless Steel Implant via Dual Layer Coating of TaN-DLC Using Sputtering and PACVD Methods

Articles in Press

Document Type : Original Research Article

Authors

1 Department of Physics, Iran University of Science and Technology, Tehran, Iran Department of Semiconductors, Materials and Energy Research Center (MERC), Meshkin Dasht, Alborz, Iran

2 Department of Semiconductors, Materials and Energy Research Center (MERC), Meshkin Dasht, Alborz, Iran

Abstract

In the current study, in order to improve the properties and performance of SS316L implants, the surface of these implants was coated using two methods of sputtering and plasma-assisted chemical vapor deposition (PACVD). TaN and diamond-like carbon (DLC) layers were applied using sputtering and PACVD methods, respectively. Structural examinations by field-emission scanning electron microscopy (FESEM) showed that the TaN layer was formed in a compact and quasi-spherical morphology. The final DLC layer was also formed in a compact and spherical morphology. Raman spectroscopic results showed that the D and G peaks with suitable heights were at 1356 cm-1 and 1588 cm-1, respectively, indicating the successful formation of DLC. Atomic force microscopy (AFM) images showed that the grain size was in the range of 20 to 35 nanometers, and the presence of very fine DLC grains resulted in a surface roughness reduction down to Ra = 1.02 µm. Cell adhesion test results up to 48 hours indicated better performance of DLC compared to TaN. Thus, the TaN-DLC two-layer coating is introduced as a new coating to improve the performance of implants.

Keywords

Main Subjects

Advanced Ceramics Progress

Articles in Press, Accepted Manuscript
Available Online from 30 July 2023

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History

  • Receive Date: 12 May 2023
  • Revise Date: 07 July 2023
  • Accept Date: 30 July 2023

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