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(cavitation erosion AND damage)

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ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 153-157, June 7–9, 2017,
... Abstract Cavitation erosion (CE) damage, which occurs in the main parts (made of high chromium cast steel) of hydroelectric power generation machine, is one of the serious problems. It is expected that life time of those parts would be prolonged if the suitable CE-resistant coating is applied...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 183-188, May 3–5, 2010,
... Abstract Damage of marine screw propeller parts made of aluminum bronze cast material caused by cavitation erosion is one of the serious problems. Erosion resistant thermal spray coating on aluminum-bronze material is expected to extend lifetime of such propellers. In this study, Cobalt-based...
Proceedings Papers

ITSC 2019, Thermal Spray 2019: Proceedings from the International Thermal Spray Conference, 950-956, May 26–29, 2019,
... samples and Cr steel reference specimens were subjected to vibratory cavitation erosion tests, volume loss was measured, and erosion damages were examined by SEM to assess fracture morphology. The results indicate that CE resistance can be improved by reducing porosity and increasing interparticle bonding...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 37-40, June 2–4, 2008,
... produces shock wave and micro water jet, whose pressures reach 102~104 MPa locally. The surface of components is damaged and eroded by the cavitation at last. [2] Cavitation erosion is also serious problem for major components in the water turbine. Cladding of AISI 304 and Co-based alloy, whose cavitation...
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ITSC 2001, Thermal Spray 2001: Proceedings from the International Thermal Spray Conference, 1085-1088, May 28–30, 2001,
... erosion test. SEI (Secondly Electron Image) photographs of coating surface after 1-hour cavitation exposure is shown in Fig.5. It is observed to sustain damage at the particle boundaries in HVOF coatings. It is seems that cavitation erosion started from the particle boundaries and pores in the coatings...
Proceedings Papers

ITSC 2022, Thermal Spray 2022: Proceedings from the International Thermal Spray Conference, 461-466, May 4–6, 2022,
... in terms of the factors controlling the cavitation erosion rate. 1 Introduction Cavitation is defined as the erosion process that appears on the surface of the metal because of bubble formation and deterioration of the surface. This leads to significant damage to equipment or one of its components...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 553-560, May 24–28, 2021,
... for cavitation erosion and abrasion damage on marine steel acceptable service life or docking intervals for ship rudder structures show that metal coatings are significantly more applications. Propeller repair might demand for better coating resistant than conventional organic coatings [11]. Furthermore...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 153-158, October 7–11, 1996,
... Abstract The proposed paper reports a series of experiments to investigate the cavitation erosion mechanism of HVOF coatings. Vibratory cavitation erosion tests according to ASTM G 32 have been carried out with several HVOF coatings including cermets, oxides and metallic alloys. The steady...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 483-489, June 7–9, 2017,
... as well as the cavitation and erosion properties were separately evaluated by current density-potential measurements and supersonic cavitation in artificial sea water. Erosion corrosion behavior has been investigated in a pump test rig with 10 wt.-% corundum (Al 2 O 3 ) particles. The results show...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 269-273, May 25–29, 1998,
... are exposed to cavitation FCAW process the base current was 30A and the pulse cur- resulting from the collapse of vapour bubbles. In order to rent 300A. prevent damage by erosion, critical areas are cladded with materials possessing a high resistance to cavitation erosion. The HVOF coatings were applied...
Proceedings Papers

ITSC 2007, Thermal Spray 2007: Proceedings from the International Thermal Spray Conference, 633-637, May 14–16, 2007,
... Abstract Cavitation erosion is one of the major problems of hydraulic machinery and may cause the equipment to reduce power and then to stop working. Now with the study of nanomaterials, some special properties of nanostructured coatings are recognized and HVOF nanostructured WC-12Co coating...
Proceedings Papers

ITSC 2011, Thermal Spray 2011: Proceedings from the International Thermal Spray Conference, 332-337, September 27–29, 2011,
... Abstract Cavitation erosion frequently occurs in hydraulic components such as turbines, valves, pumps, and ship propellers. Arc thermal spray processing has the possibility to be used for maintenance recovering of hydraulic blade runners. Fe-Cr-Mn-Si is a cavitation-resistant class of steel...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 290-297, May 24–28, 2021,
... results revealed that the deposited layer exhibited a resistance to cavitation erosion approximately 10 times higher than the AISI 316L steel due to the martensitic phase transformation occurring during the cavitation process. The phase transformation plays a main role to minimize the cavitation damage...
Proceedings Papers

ITSC 2010, Thermal Spray 2010: Proceedings from the International Thermal Spray Conference, 758-761, May 3–5, 2010,
... using a self-manufactured rotating disk system. The purpose was to investigate the resistance properties of cavitation erosion and abrasion of the coatings and the substate, especially, to compare the coatings. 2 Spraying of composite coatings To resist combined damage of cavitation and abrasion...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 809-813, June 7–9, 2017,
... frequent repairs and repainting. Moreover, the developed coatings are supposed to protect against fouling. At the moment, the fouling tests are continuing. cavitation resistance corrosion resistance erosion-corrosion test flame spraying fouling neutral spray salt scanning electron microscopy...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 83-90, September 15–18, 1997,
... Abstract Cavitation and erosion damage to hydroelectric turbines and pumps can be a major problem. The effectiveness of thermal sprayed cavitation-erosion resistant coatings for hydroelectric turbine and pumps was evaluated. The coatings evaluated were applied using High Velocity Oxyfuel (HVOF...
Proceedings Papers

ITSC 2017, Thermal Spray 2017: Proceedings from the International Thermal Spray Conference, 928-933, June 7–9, 2017,
... resistance due to a more predictable behavior and damage-tolerance. In this work, Al 2 O 3 -ZrO 2 -coatings have been deposited by atmospheric plasma spray (APS) and high-velocity oxy-fuel spray (HVOF) processes. The wear characteristics of the coatings were evaluated with cavitation erosion, delving...
Proceedings Papers

ITSC2023, Thermal Spray 2023: Proceedings from the International Thermal Spray Conference, 119-126, May 22–25, 2023,
... by the computer system attached to the microscope. Cavitation Erosion Test The ASTM G-32 modified methodology was used to conduct indirect cavitation tests. Figure 1 illustrates the configuration of the test rig. The test methodology induces cavitation damage on the surface of the test specimens that face...
Proceedings Papers

ITSC 2008, Thermal Spray 2008: Proceedings from the International Thermal Spray Conference, 1159-1163, June 2–4, 2008,
... Abstract Many studies have investigated methods to reduce cavitation damage in hydraulic turbines and reduce residual stresses after coating deposition. In this work, a cobalt stainless steel was applied by arc thermal spraying. The influence of air pressure deposition and plasma remelting...
Proceedings Papers

ITSC 2015, Thermal Spray 2015: Proceedings from the International Thermal Spray Conference, 1098-1104, May 11–14, 2015,
... Abstract Fast streaming fluid media causes cavitation-erosion in pumps, ship-propellers and rudders. To avoid severe damage, materials with high resistance against plastic deformation and a high fatigue strength should be used. Bronzes fulfill these criteria, but as-cast bulk parts are rather...