Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel

Abstract

In this work the influence of pre-treatment cleaning processes in the adhesion of TiN films deposited by the plasma based ion implantation and deposition (PBII&D) process over plasma nitrided AISI 316L stainless steel was investigated, varying the gas composition, the duration of the sputtering process and the temperature in the same deposition chamber. The TiN film morphology was scrutinized with scanning electron microscopy on the surface complemented with focus ion beam for the cross section. The film microstructure was characterized with X ray diffraction. The adhesion of the coatings was studied using the Scratch Test with constant load at different values and the Rockwell C indentation method as well. It was found that only with the sputtering carried out in a H 2-Ar gas mixing at 300 ºC temperature used as pre-treatment was successful to prepare the nitrided surface for the subsequent TiN deposition by the PBII&D process.

Surface Enhancement of Titanium-Based Coatings on Commercial Hard Steel Cutting Tools

“…In accordance with its FCC phase, the TiN coating primarily exhibited strong diffraction peaks at 36.6 and 42.6 • , corresponding to the (111) and ( 200) planes [45,46]. Weak peaks at 73.8 and 77.6 • can be attributed to the (311) and (222) planes, respectively, as confirmed in previous studies [47][48][49]. Both TiAlN and TiN coatings exhibit (111) orientation, in which surfaces terminated by nitrogen (N) atoms displayed a more pronounced inward relaxation compared to those terminated by titanium (Ti) atoms, but TiAlN exhibited a broader and less intense diffraction pattern for the (111) and (200) planes, which are TiN's preferred orientations [50,51].…”

Thin film deposition of tungsten nitride on SS 316 L surface using DC-Sputtering technique

“…The SS 316L are widely used as biomaterials due to their high biocompatibility, corrosion resistance, and inexpensive when compared to other medical metals [10,11]. However, the implants made of this material has low hardness, high friction coefficient and poor wear resistance limit potential applications [12]. Besides that AISI 316 L release of Ni, Cr, and Mo ions from 316L SS can lead to immunoreactions and inflammatory responses, stimulate the platelet-activation, and provoke intimal hyperplasia.…”