Influence of Magnetron Sputtering-Deposited Niobium Nitride Coating and Its Thermal Oxidation on the Properties of AISI 316L Steel in Terms of Its Medical Applications
Year: 2023
Type: article
Abstract: An NbN coating was produced on AISI 316L steel by reactive DC magnetron sputtering. The effects of oxidation of the NbN coating in air on the microstructure, mechanical properties, corrosion resistance, wetting angle and bioactivity were studied. Phase composition was determined by X-ray diffraction (XRD), the microstructure and thickness of the coatings in their cross-sections by a scanning electron microscope (SEM), microhardness using the Vickers method, corrosion by means of the potentiodynamic method in Ringer's solution, bioactivity was investigated in an SBF solution, while the wetting angle was studied using a goniometer. The results show an increase in the microhardness of the NbN coating and the oxidised coating, an increase in their corrosion resistance, and better bioactivity properties of the coatings compared to uncoated AISI 316L steel. The best combination of mechanical, corrosion and bioactivity properties was demonstrated by the air-oxidised NbN coating, which had a rhombic Nb2O5 structure in the surface layer.
Source: Materials
DOI: 10.3390/ma16216890
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,558
OpenAlex ID: W4387977006