scholarly journals Mesoscale Analysis of Aeration for Cavitation Erosion Protection

2020 ◽  
pp. 45-105
Author(s):  
Weilin Xu
Keyword(s):  
Cavitation Erosion ◽  
Mesoscale Analysis ◽  
Erosion Protection

The Study of Cavitation Erosion Protection Performance of Heavy-Duty Engine Coolants

2014 ◽  
Vol 651-653 ◽  
pp. 948-952
Author(s):  
Jin Mao Chen ◽  
Guan Jun Leng
Keyword(s):  
Cast Iron ◽  
Corrosion Inhibitor ◽  
Cavitation Erosion ◽  
Freezing Point ◽  
Test Time ◽  
Test Duration ◽  
Heavy Duty ◽  
Acid Type ◽  
Cylinder Liners ◽  
Erosion Protection

Ultrasonic vibratory cavitation erosion tests were carried out on studying the cavitation erosion protection performance of different type of heavy-duty engine coolants for cast iron material of wet sleeve cylinder liners. The influence of coolant type, freezing point, corrosion inhibitor content and test duration on anti-cavitation performance were analysed. The experimental results showed that the anti-cavitation erosion performance of organic acid type heavy-duty engine coolants were better than the inorganic salt type heavy-duty engine coolants. For the same formulation coolant, increasing the content of ethylene glycol or corrosion inhibitor can improve the anti-cavitation erosion performance. With the extension of ultrasonic vibration test time, the anti-cavitation erosion protection performance for cast iron was reduced.

Microstructure and Cavitation Erosion Resistance of the X2CrNiMoN22-5-3 Duplex Stainless Steel Subjected to Laser Nitriding

2018 ◽  
Vol 68 (12) ◽  
pp. 2992-2996
Author(s):  
Ion Mitelea ◽  
Ilare Bordeasu ◽  
Lavinia Madalina Micu ◽  
Corneliu Marius Craciunescu
Keyword(s):  
Cavitation Erosion ◽  
Erosion Resistance ◽  
Cast Steel ◽  
Laser Nitriding ◽  
Hydraulic Machinery ◽  
Powder Density ◽  
Different Types ◽  
Laboratory Device ◽  
Cavitation Erosion Resistance ◽  
Erosion Protection

The recent development in enhancing the corrosion resistance of materials by covering with powdered layers open the way to use the procedure also for cavitation erosion protection, phenomenon always present in hydraulic machinery runners as well as ship propellers. The present research analyzes the behavior of four different types copper layers, deposited with high velocity flames, HVOF upon specimens realized from cast steel for general use 270-480 W (equivalent with OT500-3 used in Romania), to cavitation erosion in a Laboratory device. Even if the powder density and the layers thickness have close values, the behavior to cavitation erosion is different and depend primarily on the powder chemical composition and the microscopic structure.

Multifunctional hybrid sol-gel coatings for Marine Renewable Energy Applications: Synthesis, Characterization and Comparative Analysis with Organically Modified Silicon Precursor Coatings

MRS Advances ◽  
2020 ◽  
Vol 5 (33-34) ◽  
pp. 1757-1764
Author(s):  
Manasa Hegde ◽  
Yvonne Kavanagh ◽  
Brendan Duffy ◽  
Edmond F. Tobin
Keyword(s):  
Cavitation Erosion ◽  
Sol Gel ◽  
Dip Coating ◽  
Open Circuit ◽  
Hybrid Coatings ◽  
Scanning Calorimetry ◽  
Water Contact ◽  
Energy Applications ◽  
Organically Modified ◽  
Erosion Protection

ABSTRACTHybrid coatings for cavitation erosion protection of aluminum alloys, have been developed, based on a sol-gel process and applied by the dip coating technique. This work aims to investigate established hybrid sol-gel coatings synthesized using organically modified silicon precursor 3-methacryloxypropyltrimethoxysilane (MAPTMS) mixed with zirconium (IV) propoxide. In the present research, the established baseline coatings were modified by adding different concentrations (1%, 1.5% and 2%) of cross-linkable hexamethylenediisocyanate (HMDI) diluted in 60% ethanol. The influences of the amount of crosslinker incorporated into the coatings on abrasion, corrosion and cavitation erosion protection were studied. The hydrophobic nature, thermal and electrochemical properties of the coatings were evaluated using Water Contact Angle (WCA), Differential Scanning Calorimetry (DSC), Open Circuit Potential (OCP) and Potentiodynamic polarization (PDS) techniques. Furthermore, cavitation erosion and abrasion tests were completed on all coatings and rankings of these were produced based on mass loss measurements and derived mean depth of erosion.

Cavitation Erosion Behaviour of Cooper Base Layers Deposited by HVOF Thermal Spraying

2018 ◽  
Vol 68 (12) ◽  
pp. 2914-2917 ◽  
Author(s):  
Ilare Bordeasu ◽  
Ion Mitelea ◽  
Iosif Lazar ◽  
Lavinia Madalina Micu ◽  
Olimpiu Karancsi
Keyword(s):  
Cavitation Erosion ◽  
Cast Steel ◽  
Thermal Spraying ◽  
Hydraulic Machinery ◽  
Erosion Behaviour ◽  
Powder Density ◽  
Different Types ◽  
Hvof Thermal Spraying ◽  
Laboratory Device ◽  
Erosion Protection

The recent development in enhancing the corrosion resistance of materials by covering with powdered layers open the way to use the procedure also for cavitation erosion protection, phenomenon always present in hydraulic machinery runners as well as ship propellers. The present research analyzes the behavior of four different types copper layers, deposited with high velocity flames, HVOF upon specimens realized from cast steel for general use 270-480 W (equivalent with OT500-3 used in Romania), to cavitation erosion in a Laboratory device. Even if the powder density and the layers thickness have close values, the behavior to cavitation erosion is different and depend primarily on the powder chemical composition and the microscopic structure.

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