Jan 1, 2023 · The ultrafine powder coating panel demonstrates larger modulus of resistance at 0.01 Hz (8.0×10 10 Ω cm 2) than the coarse one (1.4×10 10 Ω cm 2), and boarder plateau of phase angle close to −90° at high frequency domain, which indicate that ultrafine powder coatings have better barrier effect and corrosion protection for the steel than
Jan 1, 2023 · The study found that with increasing the percentage of CNM doping, cross-linking power of urethane and thermal stability (399 °C) was enhanced. The corrosion resistance of the composite coating was improved with E corr = 12.4 mV, I corr = 4.4 × 10 −4 A cm −2, R p = 7.02 × 10 4 K ohm cm 2 and R corr = 5.1 × 10 −6 ohm on mild steel.
Oct 15, 2019 · Low C dl and high R ct values indicate high corrosion resistance. The lowest C dl and highest R ct values obtained for Ni-GO5 coating illustrate highest corrosion resistance for this coating among all other coatings. This result is in accordance with the results obtained from the Tafel polarization experiment.
Apr 1, 2023 · Electrochemical tests demonstrated that the super-hydrophobic composite coatings greatly enhanced the corrosion resistance of AZ91D, and the corrosion current density decreased from 10 −5 to 10 −9 A/cm 2. These results indicate that the ZIF-8 coatings are beneficial for improving the hydrophobicity and enhancing the corrosion resistance of
Dec 1, 2022 · Until now, the preliminary investigations on the corrosion resistance of the HS materials have been carried out. Prabhat et al. [36], [37] investigated the effect of harmonic structure design on corrosion resistance of stainless steels. The results showed that the pitting resistance of the HS 304 L steels and 316 L steels was better than that
Dec 1, 2017 · The influence of nanoclay particles modified by polyester-amide hyperbranched on the corrosion resistance increment of epoxy coating has been shown in our previous study [29]. Behzadnasab et al. showed beneficial role of using combination of clay and zirconia nanoparticles on the improvement of the epoxy coating corrosion resistance [36].
Apr 15, 2020 · However, the Ti-5 wt.% TiN composite exhibits higher corrosion resistance than the CP-Ti, which is attributed to the fact that TiN as the micro-cathode preferentially induces the composite to enter the passivation state. The immersing tests also confirmed that the addition of 5 wt% TiN can efficiently improve the corrosion resistance of CP-Ti.
Aug 17, 2018 · The microstructure, mechanical properties and corrosion behavior of Mg–2Zn–0.6Zr alloy under the as-cast and as-extruded conditions were investigated. Microstructure analysis indicated the remarkable grain refinement by extrusion, as well as notable reductions in volume fraction and size of precipitate phases. As compared with the as-cast alloy, the as-extruded alloy exhibited better
Oct 30, 2023 · Coatings enhanced the hydrophilicity and corrosion resistance of Ti substrate. Multi-mechanisms made the antibacterial rate reach 99.99% within 0.5 h contact. Composite coatings promoted the proliferation and adhesion of MC3T3-E1 cells.
Oct 1, 2021 · After 21 days of immersion in Pseudomonas aeruginosa (P. aeruginosa) inoculated media, the results of antibacterial testing and electrochemical characterization in an erosive environment showed that superhydrophobicity significantly inhibited the adhesion of the P. aeruginosa cells and enhanced the corrosion resistance of the composite coating.
May 10, 2023 · Generally, the corrosion of magnesium (Mg) and its alloys is accompanied by hydrogen production, which can cause gas pockets and severe biological problems when they are used as implants. Germanium (Ge) as an alloy additive can moderate the cathodic reaction of Mg alloys and significantly delay the corrosion of Mg alloys via the cathode “poisoning” effect. In this study, the influence of
Aug 8, 2019 · Polyetheramine (D230), an epoxy curing agent, was grafted on graphene oxide (GO) surfaces, which can be stably dispersed in a waterborne curing agent for more than 8 months. Waterborne epoxy coatings reinforced by D230-functionalized GO (DGO) were prepared on carbon steel surfaces. According to the electrochemical impedance spectra, the impedance modulus at 0.1 Hz remained at 2.2 × 109 Ω
Feb 22, 2023 · Herein, N-deficient g-C3N4 was prepared by alkali-assisted thermal polymerization and combined with an epoxy resin to successfully synthesize a CNx/EP composite coating with excellent corrosion resistance and effective degradation of organic pollutants in simulated marine environment.
Jul 5, 2022 · Titanium alloys have been widely used in the biomedical field due to their high specific strength, good corrosion resistance and excellent biocompatibility [].Nowadays, most of the titanium alloys used in orthopedics or dentistry, such as the Ti6Al4V alloy and the Ti6Al7Nb alloy, are alloyed with toxic Al and/or V elements [2,3], hence their long-term biosafety after implantation raises concerns.
