A study of the electrophoretic deposition of polycaprolactone-chitosan-bioglass nanocomposite coating on stainless steel (316L) substrates

2021 ◽  
pp. 088391152110635
Author(s):  
Zahra Sadeghinia ◽  
Rahmatollah Emadi ◽  
Fatemeh Shamoradi
Keyword(s):  
Stainless Steel ◽  
Surface Treatment ◽  
Electrophoretic Deposition ◽  
Deposition Time ◽  
Sol Gel ◽  
Nanocomposite Coating ◽  
Deposition Method ◽  
Stainless Steel 316L ◽  
Gel Method

In this research, bioglass nanoparticles were synthesized via sol-gel method and a polycaprolactone-chitosan-bioglass nanocomposite coating was formed on SS316L substrate using electrophoretic deposition method. Then, the effects of voltage and deposition time on morphology, thickness, roughness, and wettability of final coating were investigated. Finally, biocompatibility and toxicity of the coating were evaluated. The results showed that increase of both time and voltage enhanced the thickness, roughness, and wettability of coating. Also, increase of deposition time increased the agglomeration. Therefore, it can be concluded that voltage of 20 V and time of 10 min are suitable for the formation of a uniform agglomerate-free coating. The presence of bioglass nanoparticles also led to the increase of roughness and improvement of polycaprolactone hydrophobicity. The results also showed higher bioactivity in polycaprolactone-chitosan-1% bioglass nanocomposite coating sample. This sample had a roughness ( Ra) of 1.048 ± 0.037 μm and thickness of 2.54 ± 0.14 μm. In summary, the results indicated that coating of polycaprolactone-chitosan-bioglass nanocomposite on SS316L substrate could be a suitable surface treatment to increase its in vivo bioactivity and biocompatibility.

Stainless Steel 316 L Metal Coating with Capiz Shell Hydroxyapatite Using Electrophoretic Deposition Method as Bone Implant Candidate

2020 ◽  
Vol 840 ◽  
pp. 336-344
Author(s):  
Martinus Kriswanto ◽  
Muhammad Khairurrijal ◽  
Dave Leonard Junior Wajong ◽  
Tofan Maliki Kadarismanto ◽  
Yusril Yusuf
Keyword(s):  
Stainless Steel ◽  
Electrophoretic Deposition ◽  
Sintering Temperature ◽  
Deposition Method ◽  
Stainless Steel 316L ◽  
Bone Implant ◽  
X Ray ◽  
Withdrawal Speed ◽  
Stainless Steel 316 ◽  
Scanning Electron

Hydroxyapatite (HAp) made of capiz shell has been successfully coated onto stainless steel 316L substrate using electrophoretic deposition (EPD) method. In this study, three variations were applied, they were the voltages of 25 V and 50 V, the withdrawal speeds of 0.1 mm/s, 0.5 mm/s, and 1 mm/s, and the sintering temperatures of 750, 850, and 950 °C. These variations were applied to determine the differences in morphology and crystal structure of the layers so that the most suitable result was obtained as a candidate for the bone implant. Characterization was done by Scanning Electron Microscope and X-Ray Diffractometer. The EPD process and the application of sintering temperature eliminated the phase of B type apatite carbonate which made the purity of the HAp layer higher. The SEM results show that the layer was more homogeneous and free of cracking at a voltage of 50 V and the withdrawal speed of 0.1 mm/s. The layer density was higher as the voltage and sintering temperature increased. Higher sintering temperature also made the layer more homogeneous, but at 950 °C, stainless steel 316L substrate underwent a phase transformation which caused the decreasing of the purity of the HAp layer. The best results were obtained by applying a50 V voltage, a withdrawal speed of 0.1 mm/s, and a sintering temperature of 850 °C.

Fabrication of Ni-ZrO2 Nanocomposite Coating by Electroless Deposition Technique

2020 ◽  
Vol 38 (5A) ◽  
pp. 649-655
Author(s):  
Hiba M. Algailani ◽  
Adel K. Mahmoud ◽  
Hanaa A. Al-Kaisy
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Electroless Deposition ◽  
Nanocomposite Coating ◽  
Nanocomposite Coatings ◽  
Zro2 Nanoparticles ◽  
Deposition Method ◽  
Deposition Technique ◽  
Stainless Steel 316L ◽  
X Ray

This work aims preparation of Ni-based nanocomposite coating by electroless deposition method onto stainless steel (316L) substrate, the present work will compare the effects of incorporation of ZrO2 nanoparticles at different percentages (1.25 wt %, 2.25 wt %, and 4.25 wt %) Ni-based electroless deposition coating of the bath nanocomposite on the phase structure, microhardness, and corrosion resistance is studied. Where the structure and chemical composition of nanocomposite coatings were studied by using (X-ray), (SEM) and (EDS). of Ni - ZrO2 nanocomposite coating exhibits much-increased microhardness and remarkably improved corrosion resistance. 

scholarly journals In VitroandIn VivoEvaluation of Sol-Gel Derived TiO2Coatings Based on a Variety of Precursors and Synthesis Conditions

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Krzysztof Marycz ◽  
Justyna Krzak ◽  
Wiktor Urbański ◽  
Celina Pezowicz
Keyword(s):  
Stainless Steel ◽  
Sol Gel ◽  
Biological Response ◽  
Dip Coating ◽  
Elemental Distribution ◽  
Stainless Steel 316L ◽  
Synthesis Conditions ◽  
Cells Cultured

The effect of synthesis way of TiO2coatings on biocompatibility of transplanted materials using anin vitroandin vivorat model was investigated. TiO2layers were synthesized by a nonaqueous sol-gel dip-coating method on stainless steel 316L substrates applying two different precursors and their combination. Morphology and topography of newly formed biomaterials were determined as well as chemical composition and elemental distribution of a surface samples.In vitrotests were conducted by adipose-derived mesenchymal stem cells cultured on TiO2coatings and stainless steel without coatings to assess the bioreactivity of obtained materials. A positive biological effect of TiO2/316L/1 coatings—based on titanium(IV) ethoxide—was found in bothin vitroandin vivomodels. The TiO2/316L/1 exhibited the highest roughness and the lowest titanium concentration in TiO2than TiO2/316L/2—based on titanium(IV) propoxide and TiO2/316L/3—based on both above-mentioned precursors. The proper fibroblast-like morphology and higher proliferation rate of cells cultured on TiO2/316L/1 were observed when compared to the other biomaterials. No inflammatory response in the bone surrounding implant covered by each of the obtained TiO2was present. Our results showed that improvement of routinely used stainless steel 316L with TiO2/316L/1 layer can stimulate beneficial biological response.

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