scholarly journals Comparative study of superhydrophilic and superhydrophobic TiO2/epoxy coatings on AISI 316L stainless steel: surface properties and biocompatibility

2018 ◽  
Vol 52 (3) ◽  
pp. 355-361 ◽  
Author(s):  
A. Kocijan ◽  
M. Conradi ◽  
M. Hočevar ◽  
D. Drobne
Keyword(s):  
Stainless Steel ◽  
Comparative Study ◽  
Surface Properties ◽  
Steel Surface ◽  
316L Stainless Steel ◽  
Stainless Steel Surface ◽  
Aisi 316L ◽  
Epoxy Coatings ◽  
Aisi 316L Stainless Steel

The Influence of Process Parameters on Structure of YSZ Coating Deposited by Plasma Spraying on AISI 316L Stainless Steel Surface by APS Method and on Ti6Al4V Titanium Alloy Surface by PS-PVD Method

2021 ◽  
Vol 1016 ◽  
pp. 1166-1174
Author(s):  
Maciej Pytel ◽  
Tadeusz Kubaszek ◽  
Paweł Pędrak ◽  
Marek Góral ◽  
Marcin Drajewicz
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Plasma Spray ◽  
Steel Surface ◽  
316L Stainless Steel ◽  
Stainless Steel Surface ◽  
Aisi 316L ◽  
Aisi 316L Stainless Steel ◽  
Ti6al4v Titanium Alloy ◽  
Ysz Coating

The plasma spraying is commonly used in medical application. The Atmospheric Plasma Spray (APS) method was applied for production of yttria-stabilized zirconia (YSZ) on AISI 316L stainless steel surface and also on Ti6Al4V titanium alloy surface. In present article two examples of coatings production were presented. In first experimental the YSZ was plasma sprayed (APS) on 316L stainless steel surface. The coating was deposited using A60 (Thermico) plasma torch. The initial parameters were selected and it was concluded that minimal power current was 500A. The thickness of obtained coating was in range 100-150 micrometers. The X-ray phase analysis showed the presence of tetragonal t-phase of ZrO2. The lamellar structure of coatings with large porosity was observed. In second experimental the newly developed Plasma Spray Physical Vapor Deposition method (PS-PVD) was used. The YSZ coating was deposited on titanium Grade 5 surface. The conducted research showed the formation of two types of coatings structure. When the power current was lower (2000 A) the dense lamellar-like coatings was obtained. If the power current was increased (up to 2200A) the columnar ceramic coating was observed.

scholarly journals The Influence of Surface Wettability and Topography on the Bioactivity of TiO2/Epoxy Coatings on AISI 316L Stainless Steel

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1877 ◽  
Author(s):  
Aleksandra Kocijan ◽  
Marjetka Conradi ◽  
Matej Hočevar
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Cell Attachment ◽  
Antibacterial Properties ◽  
Epoxy Coating ◽  
Aisi 316L ◽  
Epoxy Coatings ◽  
Aisi 316L Stainless Steel ◽  
Wetting Properties ◽  
Angle Measurements

Epoxy/TiO2/epoxy and epoxy/FAS-TiO2/epoxy coatings were applied to the surface of AISI 316L stainless steel with the aim to improve the biocompatibility and antibacterial properties. Contact-angle measurements were used to evaluate the wetting properties of the epoxy, epoxy/TiO2/epoxy and epoxy/FAS-TiO2/epoxy coatings. The epoxy and epoxy/TiO2/epoxy coatings were hydrophilic compared with the strongly hydrophobic epoxy/FAS-TiO2/epoxy coating. The average surface roughness (Sa) of the epoxy/FAS-TiO2/epoxy coating was higher than that of the epoxy/TiO2/epoxy coating due to the formation of agglomerates. The biocompatibility evaluation revealed that the cell attachment was significantly higher on the epoxy/FAS-TiO2/epoxy and epoxy/TiO2/epoxy coatings compared with the pure epoxy coating. We also observed improved antibacterial properties for the epoxy coatings with the addition of both TiO2 and FAS-TiO2 nanoparticles.

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