Determination of resistance to cavitation of pyrophyllite samples

Dragan Radulović; Marko Pavlović; Marina Dojčinović

doi:10.5937/zasmat2102126A

Authors

Dragan Radulović Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade, Serbia Author
Marko Pavlović Kontrol Inspekt-Beograd, Beograd Author
Marina Dojčinović University of Belgrade, Faculty of Technology and Metallurgy, Serbia Author

DOI:

https://doi.org/10.5937/zasmat2102126A

Keywords:

pyrophillite, cavitation resistance, mass loss, damage morphology, image analysis

Abstract

The resistance under the action of cavitation of sintered pyrophillite samples was investigated. The initial sample of pyrophillite from the Parsovic-BiH deposit was ground a vibrating mill to a granulation of 20 mm, pressed and sintered at temperatures (⁰C): 100; 1100; 1200. To assess cavitation resistance, the change in sample mass as a function of cavitation time was monitored. The cavitation erosion test was performed using the ultrasonic vibratory cavitation test method according to the ASTM G-32 standard. Cavitation velocites were calculated for all samples, as a basic indicator of the resistance of the material under the action of cavitation. The change in the morphology of the surface with the test time was followed by scanning electron microscopy. Based on the values of cavitation velocity and analysis of the surface damage morphology, the cavitation resistance of the tested samples based on pyrophillite was determined. The obtained results indicate that the samples of sintered pyrophillite have satisfactory resistance to the action of cavitation and be applied in conditions of lower cavitation loads.

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