“…Moreover, The Ag3p spectrum reveals a single peak at the binding energy of 575.8 eV. This indicates the existence of AgNPs on the MAO surface as supported in the literature, SEM and EDX results 52,53 .…”
Section: Resultssupporting
confidence: 80%
“…Moreover, The Ag3p spectrum reveals a single peak at the binding energy of 575.8 eV. This indicates the existence of AgNPs on the MAO surface as supported in the literature, SEM and EDX results 52 , 53 . Figure 3 XPS spectra of AgNPs-doped MAO surface produced at 15 min: ( a ) Survey, ( b ) Zr3d, ( c ) Ag3d, ( d ) Ag3p, ( e ) Ca2p and ( f ) O1s.…”
The infections leading to failed implants can be controlled mainly by metal and metal oxide-based nanoparticles. In this work, the randomly distributed AgNPs-doped onto hydroxyapatite-based surfaces were produced on zirconium by micro arc oxidation (MAO) and electrochemical deposition processes. The surfaces were characterized by XRD, SEM, EDX mapping and EDX area and contact angle goniometer. AgNPs-doped MAO surfaces, which is beneficial for bone tissue growth exhibited hydrophilic behaviors. The bioactivity of the AgNPs-doped MAO surfaces is improved compared to bare Zr substrate under SBF conditions. Importantly, the AgNPs-doped MAO surfaces exhibited antimicrobial activity for E. coli and S. aureus compared to control samples.
“…Moreover, The Ag3p spectrum reveals a single peak at the binding energy of 575.8 eV. This indicates the existence of AgNPs on the MAO surface as supported in the literature, SEM and EDX results 52,53 .…”
Section: Resultssupporting
confidence: 80%
“…Moreover, The Ag3p spectrum reveals a single peak at the binding energy of 575.8 eV. This indicates the existence of AgNPs on the MAO surface as supported in the literature, SEM and EDX results 52 , 53 . Figure 3 XPS spectra of AgNPs-doped MAO surface produced at 15 min: ( a ) Survey, ( b ) Zr3d, ( c ) Ag3d, ( d ) Ag3p, ( e ) Ca2p and ( f ) O1s.…”
The infections leading to failed implants can be controlled mainly by metal and metal oxide-based nanoparticles. In this work, the randomly distributed AgNPs-doped onto hydroxyapatite-based surfaces were produced on zirconium by micro arc oxidation (MAO) and electrochemical deposition processes. The surfaces were characterized by XRD, SEM, EDX mapping and EDX area and contact angle goniometer. AgNPs-doped MAO surfaces, which is beneficial for bone tissue growth exhibited hydrophilic behaviors. The bioactivity of the AgNPs-doped MAO surfaces is improved compared to bare Zr substrate under SBF conditions. Importantly, the AgNPs-doped MAO surfaces exhibited antimicrobial activity for E. coli and S. aureus compared to control samples.
“…The potentiodynamic polarization test results showed that the corrosion parameters, such as the value of i corr , decreased from 6.97 × 10 −4 A cm −2 for bare Mg alloy to 2.90 × 10 −6 A cm −2 and 1.42 × 10 −7 A cm −2 for PE and PE/PEI-AgNPs, respectively. Moreover, the values of polarization resistance were observed to be 1.33 × 10 5 Ω cm 2 , 3.56 × 10 5 Ω cm 2 , and 8.71 × 10 6 Ω cm 2 for bare Mg alloy, PE, and PE/PEI-AgNPs, respectively, indicating that the defects on IL were preserved by synergistic effect of AgNPS and PEI layer [30].…”
Section: Protective Performance: Polarization Behavior and Impedance Responsementioning
confidence: 94%
“…PDP technique is used to understand the corrosion rate and susceptibility of materials to corrosion, whilst EIS technique together with equivalent circuit modelling describes corrosion mechanism providing relevant information regarding the roles of coating layers [19,28,29]. Wang et al [30] reported a hybrid coating which consisted of IL by PE self-assembled with polyethyleneimine (PEI) and Ag nanoparticles (AgNPs) by DCC. PEI as OL provides a good adhesion to the surface and effectively seals the substrate from corrosion due to the existence of amine groups [30].…”
Section: Protective Performance: Polarization Behavior and Impedance Responsementioning
confidence: 99%
“…Wang et al [30] reported a hybrid coating which consisted of IL by PE self-assembled with polyethyleneimine (PEI) and Ag nanoparticles (AgNPs) by DCC. PEI as OL provides a good adhesion to the surface and effectively seals the substrate from corrosion due to the existence of amine groups [30]. The potentiodynamic polarization test results showed that the corrosion parameters, such as the value of i corr , decreased from 6.97 × 10 −4 A cm −2 for bare Mg alloy to 2.90 × 10 −6 A cm −2 and 1.42 × 10 −7 A cm −2 for PE and PE/PEI-AgNPs, respectively.…”
Section: Protective Performance: Polarization Behavior and Impedance Responsementioning
In recent years, hybrid organic-inorganic (HOI) materials have attracted massive attention as they combine the unique properties of organic and inorganic compounds. In this review, we focus on the formation of HOI materials and their electrochemical performance that can be controlled by microstructural design depending upon their chemical composition. This overview outlines the recent strategies of preparing HOI materials on metallic surface via wet-electrochemical systems, such as plasma electrolysis (PE) and dip chemical coating (DCC). The corresponding electrochemical behavior for short and long term exposures is also summarized.
Micro‐arc oxidation (MAO) technology is used to prepare a micro‐arc oxidation coating on the surface of magnesium alloy, and then self‐assembly membrane (SAM) technology is used to separately apply ethyl acetate, cetyltrimethoxysilane, and stearic acid to the MAO coatings. Hydrophilic, hydrophobic, and super‐hydrophobic micro‐arc oxidation/self‐assembly coatings are prepared on the surface of magnesium alloy. The surface morphology, composition, hydrophobicity, and corrosion resistance of the coating are characterized by scanning electron microscope (SEM), X‐Ray diffraction (XRD), contact angle, electrochemical test, and salt spray experiment. The results show that the contact angles of the three types of composite coating are 5.13°, 90.72°, and 150.62°, respectively. As the hydrophobicity of the composite coating increases, the corrosion resistance of the sample gradually increases. Rct is increased from 1.61 × 103 to 3.22 × 106 Ω cm2 and Icorr is reduced from 1.883 × 10−3 to 4.780 × 10−7 A cm−2. The adsorption mode of the coating is further judged by molecular dynamics calculation, and the results show that the three self‐assembled molecules and MgO belong to chemical adsorption.
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