New insights of Nb2O5-based coatings on the 316L SS surfaces: enhanced biological responses

Abstract

This communication aims to propose new insights of Nb2O5-based coatings on the 316L SS surface with great prospects to be used in the dentistry field as brackets. The Nb2O5 thin film was incorporated into the 316L SS by using PVD method. For this purpose, the studied system was characterized structurally and morphologically by using AFM, FTIR-IRRAS, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Biological assays were performed using human gingival fibroblast cell-line HGF-1. In agreement with FTIR and Raman results, the XPS technique indicates that Nb is present in an oxidation state assigned to Nb2O5. Furthermore, the coatings produced by PVD technique are less toxic and induces less inflammation in gingival cells (cell-line HGF-1), suggesting the strategy of use Nb2O5 thin film to cover the 316L SS promoted since its protection of the physiological environment to its biocompatibility improvement.

Progress in Niobium Oxide-Containing Coatings for Biomedical Applications: A Critical Review

“… 173 , 174 The Nb 2 O 5 -coated metallic substrates induce higher anti-inflammatory cytokines, revealing their excellent capability in diminishing the toxicity. 91 , 123 …”

“…Corrosion and abrasion occurrence in the physiological medium can result in the inflammatory due to the released toxic ions from the surface of the material, thereby failing the implantation. − IL-10 and IL-17 are of anti-inflammatory cytokines, which play a key role in impeding inflammatory, e.g., chronic inflammatory and autoimmune pathologies. Moreover, TNF-α deals with inflammation prevention and osteoblast activation. , The Nb 2 O 5 -coated metallic substrates induce higher anti-inflammatory cytokines, revealing their excellent capability in diminishing the toxicity. , …”

“…117−121 Magnetron-sputtered pure Nb 2 O 5 coatings can be obtained using a Nb metallic target in either pure oxygen 117,122 or mixed oxygen + argon atmospheres. 123,124 To deposit sol−gel derived Nb 2 O 5 coatings, three types of sols can be prepared using various precursors with specific molar ratios as below: (i) butanol, acetylacetone, and niobium alkoxide; 121,125 (ii) niobium ethoxide, iso-propanol, acetylacetone, and polyethylene glycol (PEG); 126 and (iii) niobium butoxide, triethanolamine, ethanol, and PEG. 127 The anodizing of Nb-containing substrates can be carried out from three types of electrolyte: (i) NaF or Na 2 HPO 4containing HF(aq); 118 128 PEO coating of Nb anode material can be carried out from phosphoric acid and hydrogen peroxide-containing and calcium acetate monohydrate electrolytes.…”

“…Magnetron-sputtered pure Nb 2 O 5 coatings can be obtained using a Nb metallic target in either pure oxygen , or mixed oxygen + argon atmospheres. , To deposit sol–gel derived Nb 2 O 5 coatings, three types of sols can be prepared using various precursors with specific molar ratios as below: (i) butanol, acetylacetone, and niobium alkoxide; , (ii) niobium ethoxide, iso -propanol, acetylacetone, and polyethylene glycol (PEG); and (iii) niobium butoxide, triethanolamine, ethanol, and PEG …”

Laser-Induced Slippery Liquid-Infused Surfaces with Anticorrosion and Wear Resistance Properties on Aluminum Alloy Substrates

“…Aluminum (Al) alloy materials are indispensable in the industrial field due to their high strength, low density, and good processing performance, which are widely used in various fields such as electronic engineering, petrochemical engineering, and aerospace. − However, corrosion occurs when all alloy materials are exposed to the atmosphere, seawater, soil, and other media, resulting in equipment damage and huge economic losses. − Al has high electrochemical activity, and Al alloys are easy to be corroded in many application environments, especially in chloride solutions, which seriously restricts their promotion and applications in various fields. , Therefore, how to effectively reduce the surface corrosion of materials has become an important issue in the surface treatment of Al alloy materials. − …”