High-temperature mechanical loss and creep behavior of fine-grained zirconia-containing nano-sized reinforcements

Polycrystalline zirconia (3Y-TZP grade) specimens unreinforced and reinforced with multiwalled carbon nanotubes (MWCNTs) or silicon carbide whiskers (SiCws) were processed by powder metallurgy and studied by mechanical spectroscopy. The high-temperature mechanical-loss spectrum of pure 3Y-TZP presents mainly an exponential background. Doping 3Y-TZP with nano-sized reinforcements such as MWCNT or SiCw results in a decrease in the high-temperature background with respect to pure zirconia. It has been shown that these spectrum modifications by doping are associated with a better resistance to creep. (C) 2009 Elsevier B.V. All rights reserved.

Published in:
Materials Science And Engineering A-Structural Materials Properties Microstructure And Processing, 521-22, 217-220
Presented at:
15th International Conference on Internal Friction and Mechanical Spectroscopy (ICIFMS-15), Perugia, ITALY, Jul 20-25, 2008

 Record created 2010-11-30, last modified 2018-03-17

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