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Sol-gel coatings in the field of corrosion prevention are also on the rise. A limited amount of work has been done on determining the effect of hybrid sol-gel coatings on abrasion and cavitation erosion of AA2024-T3. The present research investigates the effect of thickness of the coatings on morphology, corrosion, abrasion, and cavitation erosion characteristics of the prepared hybrid sol-gel coatings applied on AA2024-T3 surfaces. The hybrid sol-gels were synthesized from 3-trimethoxysilylpropylmethacrylate, a zirconium complex prepared from the chelation of zirconium n-propoxide and methacrylic acid. T3 coatings of AA-2024 T3 were coated with single-dip, double-dip, and triple-dip. AA2024-T3's corrosion, cavitation erosion, and abrasion resistance of the multilayer coated samples improved the corrosion, cavitation erosion, and abrasion resistance of the AA2024-T3. Consequently, the ready silica-based coatings can be used as a potential alternative for marine renewable energy applications.
Source link: https://doi.org/10.3390/cmd3040036
By atmospheric plasma spray deposited TiO 2 ceramic coatings onto 316L stainless steel, achieving a 3% TiO 2 ceramic coating. The coatings were made with differing quantities of two spray process parameters: the stand-off distance and torch velocity. Cavitation erosion tests were conducted in accordance with the ASTM G32 standard. With MATLAB software from Neural Network Toolbox and Global Optimization Toolbox, the results were analyzed. The combination of artificial intelligence technologies is critical for future thermal spray process parameters selection, particularly for the manufacturing of ceramic coatings with specified functional properties. u2014 the new method made it possible to find a Pareto front, i. e. , trade-offs between several competing goals, u2014; improving the hardness and cavitation erosion resistance of Al 2 O 3 -13 wt% TiO 2 coatings, while also minimizing their porosity.
Source link: https://doi.org/10.3390/pr8121544
Because of the presence of the TiAl 3 phase, the cavitation resistance of the Alu20135Ti and Alu201310Ti alloys was raised relative to the pure Al's. Corrosion degradation of the Alu2013Ti alloys caused by a significant percentage, 23. 9 percent, leading to a substantial decline due to corrosion. Corrosion erosion caused by corrosion was a larger selling factor than cavitation erosion, according to a corrosion promoted by cavitation erosion.
Source link: https://doi.org/10.3390/cryst11111299
Cavitation corrosion resistant coatings are a potent remedy to the cavitation corrosion issue. Results revealed that AlCoCr x CuFe HECs were made up of BCC and FCC duplex phases, which were compiled of BCC and FCC duplex phase, as shown by the AlCoCr x CuFe HECs. The best cavitation erosion resistance was seen among all samples, according to AlCoCr x CuFe HECs with the lowest chromium content. u03b4 : The cavitation resistance of AlCoCr x CuFe HECs has a good correlation with the mechanical parameter / and phase formation parameter u03b4. The dendritic structure of the BCC phase, which was triggered by the deposition of the interdendrite structure by cavitation effect, was revealed by the surface after 20 h of cavitation erosion testing.
Source link: https://doi.org/10.3390/ma13184067
Metallic coatings based on cobalt and nickel are promising to extend the life span of machine components operating in harsh environments. However, there are few studies on the tribological performance and cavitation erosion resistance of common MCrAlY and NiCrMoNbTa coatings, despite being skeptical. The effects of microstructure and hardness of HVOF coated CoNiCrAly, NiCoCrAly, and NiCrMoNbTa coatings on erosion results were investigated in a tribological and cavitation erosion study by this analysis. The cavitation erosion test was carried out using the ASTM G32 standard. The abrasion is followed by heavy adhesive smearing of oxidised wear products, resulting in the lowest coefficient of friction and wear rate in the case of NiCrMoNbTa coatings. At microstructure discontinuities and ends with serious surface pitting, cavitation erosion is initiated. The wear and cavitation erosion results are more affected by the differences in microstructure of investigated coatings, rather than the hardness itself.
Source link: https://doi.org/10.3390/ma15010093
In nuclear reactor operation, the Z3CN20M stainless steel, a candidate material for coolant pump shells, experiences cavitation erosion. The CE behavior of Z3CN20/u201309M steel's CE behavior is investigated using scanning electron microscopy, transmission electron microscopy, electron back-scatter diffraction, and optical profilometry. Through potentiodynamic polarization experiments and time-of-flight secondary ion mass spectrometry, the impact of CE on corrosion resistance is investigated. Finally, steps aimed at raising the CE resistance of Z3CN20u201309M steel are suggested.
Source link: https://doi.org/10.1016/j.matdes.2022.110978
Experimentally, the effects of cavitation erosion behavior in various metals in a water-flow system were investigated experimentally. The weight loss and cavitation erosion rate, as well as other changes in the topography of the metal surface are both discussed, leading to cavitation behaviors. With increasing time, the variability in the cavitation erosion on metallic specimens could be divided into three stages: increasing stage, stable stage, and attenuation stage. The pure aluminum material had the lowest yield strength and suffered the most severe cavitation erosion, according to the most severe cavitation erosion, while brass had the highest yield strength and good mechanical characteristics, with the least cavitation erosion. In addition, the roughness of the material surface was also one of the key factors affecting the cavitation erosion rate. Milling specimens with higher surface roughness were marginally smaller than that of grinding.
Source link: https://doi.org/10.3390/app12125840
The phenomenon of cite erosion in industry can reduce the life of hydraulic machines. The results indicate that the PIF and EPF functions are in good agreement with the experiments, namely: the PIF and EPF functions. On the other hand, we suppose that the implosion of the cloud of bubbles leads to a pressure wave, which in turn causes the expulsion of tiny bubbles near the wall. To extrapolate the pressure field, we can change the degree of proximity of these micro-bubbles near the wall to select either the shock wave or the micro-jet. We can compare these estimates with the latest erosion measurements, and we can safely conclude that the results relate more to the likelihood of a micro-jet than to the presence of a shock wave.
Source link: https://doi.org/10.47176/jafm.15.04.1016
In distilled water, the cavitation erosion characteristics of FeNiCrBSiNbW coatings with different surface roughness levels were investigated. The coatings revealed an increase in mass loss of cavitation erosion damage with increasing initial surface roughness. The amount of pre-existing defects on the first surface of the coatings was discovered to be a significant contributor to the variation in the cavitation erosion behavior. A brittle erosion technique was a cavitation erosion damage for the coatings.
Source link: https://doi.org/10.3390/coatings7110200
The stainless steel substrate grade AISI 304 was coated with MCrAlY and Cr3C2-NiCr based coatings, as a result of the HVOF process, as well as Cr3C2-NiCr based coatings were applied using HVOF. Cavitationerosion experiments were carried out in distilled water with the use of a vibratory rig and a stationary specimen method. With the use of a SEM microscope, cavity erosion curves were plotted as well as the cavitation wear mechanism was established. AISI 304 was calculated as a typical wear resistance with reference to a stainless steel reference sample. The MCrAlY coating had the highest cavitation erosion resistance, and therefore the Cr3C-NiCr coating had the highest sliding wear resistance of all tested materials.
Source link: https://doi.org/10.26628/wtr.v90i10.964
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