Early stage cavitation erosion within ceramics-An experimental investigation

This source preferred by Mark Hadfield

Authors: Fatjo, G., Hadfield, M., Vieillard, C. and Sekulic, J.

http://eprints.bournemouth.ac.uk/9591/

Journal: Ceramics International

Volume: 35

Pages: 3301-3312

ISSN: 0272-8842

DOI: 10.1016/j.ceramint.2009.05.020

Six ceramic material types were considered within an experimental investigation to identify the erosion damages mechanisms resulting from cavitation exposure. These materials were a Y-TZP type of zirconia, different commercially available silicon nitrides, a high purity alumina and an hardened high nitrogen stainless steel. An ultrasonic transducer was utilised to produce cavitation conditions and the configuration was “static specimen method” using a 5mm diameter probe, 20kHz and 50μm of amplitude. The exposure times were periods from 15 seconds to 2 hours. Experimental methods employed to characterise wear mechanisms were light microscopy, scanning light interferometry, scanning electronic microscopy. It was found that the zirconia and silicon nitrides demonstrated evidence of local pseudoplastic deformation or depression prior to more pronounced erosion damages by fracture. Zirconia showed evidence of delayed surface changes when the sample is at rest stored in air possibly by spontaneous phase transformation after the completion of the erosion tests. Alumina showed evidence of brittle surface fracture and negligible or no pseudo-plastic deformation. All wear mechanisms are discussed and the materials are ranked in terms of cavitation resistance performance.

This data was imported from Scopus:

Authors: García-Atance Fatjó, G., Hadfield, M., Vieillard, C. and Sekulic, J.

http://eprints.bournemouth.ac.uk/9591/

Journal: Ceramics International

Volume: 35

Issue: 8

Pages: 3301-3312

ISSN: 0272-8842

DOI: 10.1016/j.ceramint.2009.05.020

Six ceramic material types were considered within an experimental investigation to identify the erosion damage mechanisms resulting from cavitation exposure. These materials were a Y-TZP-type zirconia, different commercially available silicon nitrides, a high-purity alumina and a hardened high-nitrogen stainless steel as reference. An ultrasonic transducer was utilised to produce cavitation conditions and the configuration was "static specimen method" using a 5-mm diameter probe, 20-kHz and 50-μm amplitude. The exposure times were periods from 15 s to 3 h. Experimental methods employed to characterise wear mechanisms were light microscopy, scanning light interferometry and scanning electron microscopy. It was found that the zirconia and silicon nitrides demonstrated evidence of local pseudo-plastic deformation or depression prior to more pronounced erosion damage by fracture. Zirconia showed evidence of delayed surface changes when the sample is at rest stored in air, possibly by spontaneous phase transformation after the completion of the erosion tests. Alumina showed evidence of brittle surface fracture and negligible or no pseudo-plastic deformation. All wear mechanisms are discussed, and the materials are ranked in terms of cavitation resistance performance. © 2009 Elsevier Ltd and Techna Group S.r.l.

This data was imported from Web of Science (Lite):

Authors: Fatjo, G.G.-A., Hadfield, M., Vieillard, C. and Sekulic, J.

http://eprints.bournemouth.ac.uk/9591/

Journal: CERAMICS INTERNATIONAL

Volume: 35

Issue: 8

Pages: 3301-3312

eISSN: 1873-3956

ISSN: 0272-8842

DOI: 10.1016/j.ceramint.2009.05.020

The data on this page was last updated at 13:55 on February 25, 2020.