Study of Comparative Resistance to Cavitational Erosion of Material Samples and Coatings in the Hydraulic Machine Flow Sections

Authors: Petrov A.I., Skobelev M.M., Khanychev A.G. Published: 15.04.2015
Published in issue: #2(101)/2015  

DOI: 10.18698/0236-3941-2015-2-128-137

Category: Mechanical Engineering and Machine Science | Chapter: Friction and Wear in Machines  
Keywords: сavitational erosion, ultrasonic cavitation, test samples, rubber

The material resistance to cavitation is studied experimentally in the flow sections of hydraulic machines. A brief review of existing normal and accelerated testing methods of the material resistance to cavitation erosion is presented. The testing technique is based on the ultrasonic cavitation method. The test bench design is described. The samples of various grades of steels, as well as of polymers and rubber coatings of different thicknesses are investigated. Test results characterizing comparative resistance to cavitation of materials and coatings are presented as the relationships between the sample mass loss and the rate of mass loss for different materials and testing time. Photo images of the samples subjected to cavitational erosion are presented. Conclusions are made about the applicability of different materials and coatings for manufacturing the working parts of vane pumps and water turbines.


[1] Kovalev A.A., Spokoynyy I.A., Shashurin V.D. Evaluation of cavitation stability of machine units and parts operating in corrosive liquids. Vestn. Mashinostr. [Russ. Eng. Res.], 2014, no. 5, pp. 50-55 (in Russ.).

[2] Karelin V.Ya. Kavitatsionnye yavleniya v tsentrobezhnykh i osevykh nasosakh [Cavitation phenomena in centrifugal and axial pumps]. Moscow, Mashinostroenie Publ., 1976. 325 p.

[3] Kovalev A.A. Simulation of cavitation effect on the working surface of the product operating in the hydrodynamic environment. Jelektr. Nauchno-Tehn. Izd "Nauka i obrazovanie" MGTU im. N.E. Baumana [El. Sc.-Tech. Publ. "Science and Education" of Bauman MSTU], 2013, no. 11, pp. 25-36 (in Russ.).

[4] Timerbulatov M.G. Influence of corrosion factor on cavitation resistance of metals. Tr. koordinatsionnykh soveshchaniy po gidrotekhnike [Proc. of coordinating meetings in hydraulic engineering]. Leningrad, Energiya Publ., 1973, iss. 79 (Corrosion and corrosion protection of waterworks’ metal constructions), pp. 38-44 (in Russ.).

[5] Kendrick H. Light. Development of cavitation erosion resistant advanced material system. Orono (Maine, USA). The University of Maine, 2005. 76 p.

[6] Bronin F.A. Issledovanie kavitatsionnogo razrusheniya i dispergirovaniya tverdykh tel v ul’trazvukovom pole vysokoy intensivnosti [Study of cavitation destruction and dispersion of solids in highly intensive ultrasonic field]. Diss. kand. tekhn. nauk [Cand. tech. sci. diss.], 1967. 16 p.

[7] Pernik A.D. Problemy kavitatsii [Cavitation problems]. Leningrad, Sudostroenie Publ., 1966. 239 p.

[8] ASTM G32-10 Standard test method for cavitation erosion using vibratory apparatus. Pub. Dec. 1, 2010.

[9] Knepp R., Deyli Dzh., Khemmit F. Kavitatsiya [Cavitation]. Russ. Ed. Moscow, Mir Publ., 1974. 687 p.

[10] Bakhtin B.I., Ivashov A.I., Kuznetsov A.V., Skorokhodov A.S. Experimental study of the particulars of cavitation zone formation in strong ultrasonic fields. Inzhenerno-fizicheskiy zhurnal [J. Eng. Phys. Thermophys.], 2014, vol. 87, no. 3, pp. 650-663 (in Russ.).