Cavitation Erosion Resistance of Alloys Used in Cathodic Protection of Hulls of Ships

Jasionowski, R.; Przetakiewicz, D.; Przetakiewicz, W.

doi:10.2478/amm-2014-0039

Cited by 20 publications

(10 citation statements)

References 2 publications

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“…(1) and(2) and as shown in Fig.3. Residual stresses on the coated samples are because biaxial applied load and thermal stresses developed on the body.…”

mentioning

confidence: 84%

“…The past century observed a wide range of development in the automotive, marine and aerospace industries. Among assorted challenges in the automotive and marine environment, cavitation and erosion are prominent causes in the failure of engineering components, such as pumps, engines, blades, and ship propellers [1] and [2]. The general phenomenon in hydraulic systems involves a bombardment of gas bubbles on the component surface that leads to erosion, and fatigue failure, which finally deteriorate the performance of valuable and crucial equipment [3] and [4].…”

Section: Introductionmentioning

confidence: 99%

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Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Tyagi

Murtaza

Walia

2021

SV-JME

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At present, cost-effective coatings that cause less pollution are in great demand; to decrease frictional losses, carbon-based hybrid composite coatings have been developed using a high-velocity oxy-fuel (HVOF) spray process. The microstructural, tribological, corrosion, and mechanical properties of these coatings have been evaluated using high-resolution X-ray diffraction (HRXRD), field emission scanning electron microscopy-Energy dispersive X-ray Spectroscopy (FESEM-EDS), Raman spectrum, Vickers micro-hardness tester, µ-360 cos(α) residual stress analyser, corrosion tester, and high temperature tribometer. The residual stress, corrosion and tribological behaviour at high temperatures were investigated using a pin-on-disc high-temperature tribometer. The tribological performance was evaluated using a high-temperature tribometer, and the experimental result shows that a coefficient of friction (COF) varies from 0.12 to 0.52, while wear results were in the range of 45 µm to 120 µm, as the test condition of temperature ranging from 50 °C to 350 °C, load from 60 N to 90 N and sliding velocity from 0.1 m/s to 0.4 m/s respectively. The experimental results of corrosion testing show that the mass loss decreases from 0.10 g to 0.04 g, when samples were dipped for 1 h; when the samples were dipped for 8 h, the mass loss of hybrid composite coating varied from 0.12 g to 0.045 g. The tribological test showed a 78.9 % increase in micro-hardness, a 78 % decrease in residual stress, and 60 % and 62.5 % decreases in mass loss due to corrosion at 1 h and 8 h, respectively, a 76.9 % decrease in COF and 62.5 % reduction in the wear at test condition of 350 ºC temperature, a sliding velocity of 0.4 m/s and 90 N load.

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“…(1) and(2) and as shown in Fig.3. Residual stresses on the coated samples are because biaxial applied load and thermal stresses developed on the body.…”

mentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Tyagi

Murtaza

Walia

2021

SV-JME

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“…Cavitation erosion (CE) widely exists in the components of fluid equipment, such as marine rudder blades, propellers, and turbine impellers. CE is the predominant cause for overflow part failure and has become one of the most significant technical problems of fluid machinery due to the serious threats to the safety of the machinery, leading to the reduction of the efficiency and the increase of the production cost [1][2][3]. Therefore, it is of great economic value to improve the CE resistance of the overcurrent components.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Cavitation Erosion Resistance of HVOF Deposited WC-Co Coatings with Different Sized WC

Ding

Yuan

et al. 2018

Coatings

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Conventional, multimodal and nanostructured WC-12Co coatings with different WC sizes and distributions were prepared by high velocity oxy-fuel spray (HVOF). The micrographs and structures of the coatings were analyzed by scanning electron microscope (SEM), X-ray diffractometer (XRD) et al. The porosity, microhardness and fracture toughness of the WC-Co coatings were measured. The coating resistance to cavitation erosion (CE) was investigated by ultrasonic vibration cavitation equipment and the cavitation mechanisms were explored. Results show that there is serious WC decarburization in nanostructured and multimodal WC-Co coatings with the formation of W2C and W phases. The nanostructured WC-Co coating has the densest microstructure with lowest porosity compared to the other two WC-Co coatings, as well as the highest fracture toughness among the three coatings. It was also discovered that the nanostructured WC-Co coating exhibits the best CE resistance and that the CE rate is approximately one-third in comparison with conventional coating.

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“…Furthermore, there is a wide choice of cavitation erosion resistance (CER) evaluation methods available in the literature. They pertain to the use of either standard test rigs under ASTM G32 (vibratory apparatus) [21,22] and ASTM G134 (cavitating liquid jet) [23,24] or non-standard solutions such as rotation discs and cavitation tunnel rigs [25][26][27]. However, the determination of complete cavitation curves by laboratory testing is usually very time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Neural Modelling of APS Thermal Spray Process Parameters for Optimising the Hardness, Porosity and Cavitation Erosion Resistance of Al2O3 -13% TiO2 Coatings

Szala¹,

Łatka²,

Awtoniuk³

et al. 2020

Preprint

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The study aims to elaborate a neural model and algorithm for optimising hardness and porosity of coatings and thus ensure that they have superior cavitation erosion resistance. Al2O3-13wt.%TiO2 ceramic coatings were deposited onto 316L stainless steel by atmospheric plasma spray (ASP). The coatings were prepared with different values of two spray process parameters: the stand-off distance and torch velocity. Microstructure, porosity and microhardness of the coatings were examined. Cavitation erosion tests were conducted in compliance with the ASTM G32 standard. Artificial neural networks (ANN) were employed to elaborate the model, and the multi-objectives genetic algorithm (MOGA) was used to optimise both properties and cavitation erosion resistance of the coatings. Results were analysed with Matlab software by Neural Network Toolbox and Global Optimization Toolbox. The fusion of artificial intelligence methods (ANN+MOGA) is essential for future selection of thermal spray process parameters, especially for the design of ceramic coatings with specified functional properties. Selection of these parameters is a multicriteria decision problem. The proposed method made it possible to find a Pareto front, i.e. trade-offs between several conflicting objectives – maximising the hardness and cavitation erosion resistance of Al2O3-13%TiO2 coatings and, at the same time, minimizing their porosity.

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Cavitation Erosion Resistance of Alloys Used in Cathodic Protection of Hulls of Ships

Cited by 20 publications

References 2 publications

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Residual, Corrosion & Tribological Behavior of HVOF Sprayed Sustainable Temperature-Dependent Carbon-Based Hybrid Composite Coating

Microstructure and Cavitation Erosion Resistance of HVOF Deposited WC-Co Coatings with Different Sized WC

Neural Modelling of APS Thermal Spray Process Parameters for Optimising the Hardness, Porosity and Cavitation Erosion Resistance of Al<sub>2</sub>O<sub>3</sub> -13% TiO<sub>2</sub> Coatings

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