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Cavitation Erosion - DOAJ

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Last Updated: 06 September 2022

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Neural Modelling of APS Thermal Spray Process Parameters for Optimizing the Hardness, Porosity and Cavitation Erosion Resistance of Al 2 O 3 -13 wt% TiO 2 Coatings

TiO 2 ceramic coatings were applied to 316L stainless steel by atmospheric plasma spraying, resulting in an Al 2 O 3 -13 wt% TiO 2 ceramic coating. The coatings were designed with different amounts of two spray process parameters: the stand-off distance and torch velocity. Cavitation erosion tests were performed in accordance with the ASTM G32 specification. The results were analysed with MATLAB software from Neural Network Toolbox and Global Optimization Toolbox, according to the researchers. The synthesis of artificial intelligence techniques is crucial for future thermal spray process parameters determination, particularly for the manufacturing of ceramic coatings with specific functional properties. The new strategy made it possible to find a Pareto front, i. e. , trade-offs between several competing targets;u2014 increasing 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


Sediment and Cavitation Erosion in Francis Turbines—Review of Latest Experimental and Numerical Techniques

The key issues in the rivers of Himalayas and Andes are sedimentation and exosionation of the hydroelectric power turbine components. Optimization technologies, which compounded the effect of sediment and cavitation erosion, as well as rigorous experiments, will yield results that are useful for erosion detection and reduction. Although some researchers have published empirical studies on the coalescing effects of sedimentation and cavitation erosion, only limited Computational Fluid Dynamics research is available in literature.

Source link: https://doi.org/10.3390/en14061516


Investigation on Ultrasonic Cavitation Erosion of Aluminum–Titanium Alloys in Sodium Chloride Solution

The cavitation resistance of the Al20135Ti and Alu201310Ti alloys was increased relative to the pure Al alloys, and the TiAl 3 phase's performance was enhanced. Corrgistic reaction between cavitation erosion and corrosion made up a substantial proportion, 23. 9 percent, indicating that corrosion has a major effect on the Alu2013Ti alloys' cavitation erosion. The cavitation erosion exacerbated by corrosion had a greater selling effect than cavitation erosion's corrosion.

Source link: https://doi.org/10.3390/cryst11111299


Cavitation erosion and its effect on corrosion resistance of nuclear-grade Z3CN20–09M stainless steel

Cavitation erosion in nuclear reactor service occurs in stainless steel used for coolant pump shells, Z3CN20. u201309M stainless steel, a potential material for coolant pump shells, is a candidate material for coolant pump shells. By potentiodynamic polarization experiments and time-of-flight secondary ion mass spectrometry, the impact of CE on corrosion resistance is investigated. The Cr and O atoms are dispersed by slip bands, strain-induced martensite, and stacking defects, allowing for diffusion paths for the Cr and O atoms to develop a more compact passive film. Finaly, we're suggesting steps aimed at raising the CE resistance of Z3CN20-u201309M steel.

Source link: https://doi.org/10.1016/j.matdes.2022.110978


STUDY OF CAVITATION EROSION PHENOMENON AT STAINLESS STEEL AISI 304 BASE AND WITH SIC COATING

Bubble formation, expansion, and collapse of bubbles in liquid media contributes to the phenomenon of cavitation erosion. The bubbles are responsible for the damage caused by metal and non-metal materials. This experimental work aims to determine the results of AISI 304 stainless steel base and coated with SiC. The SiC coating was obtained by the Chemical Vapor Deposition method supported by plasma. According to the evidence of mass loss, the stainless steel coated with SiC has a greater wear resistance than the stainless steel base.

Source link: https://doi.org/10.18485/aeletters.2022.7.2.3


Cavitation erosion of electrostatic spray polyester coatings with different surface finish

Polyester coatings are one of the most commonly used powder paints and have a variety of uses. This work investigates the cavitation erosion resistance of three commercial polyester coatings electrostatic spray onto a AW-6060 aluminium alloy substrate. Electrostatic spray coatings have a higher CE resistance than aluminium alloy coated aluminium alloy. The most scratch-resistant to CE is a matt finish double-layer and single-layer silk gloss finish. Polyester coatings are characterized by the following: the material's brittle-ductile behaviour, cracks formation, lateral net-cracking expansion, and removal of chunk coating material and craters growth are all dependent on the CE mechanism. u2019 growth is projected by the tribular-ductile behavior, cracks formation, lateral net-cracking growth, and cratersu2019 expansion.

Source link: https://doi.org/https://doi.org/10.24425/bpasts.2021.137519

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions