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Hydrothermal Aging Behavior of Nanocrystalline Y‐TZP Ceramics
Author(s) -
Paul Anish,
Vaidhyanathan Bala,
Binner Jon G. P.
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04341.x
Subject(s) - materials science , nanocrystalline material , yttria stabilized zirconia , grain size , ceramic , cubic zirconia , hydrothermal circulation , sintering , raman spectroscopy , degradation (telecommunications) , accelerated aging , composite material , chemical engineering , metallurgy , mineralogy , nanotechnology , chemistry , telecommunications , physics , optics , computer science , engineering
The influence of grain size and yttria content on the hydrothermal aging behavior of yttria‐stabilized zirconia ceramics has been investigated via the preparation of genuine, fully dense nanozirconia ceramics with <100 nm grain size by two‐step sintering. The samples were aged at different temperatures for varying periods of time and XRD and micro‐Raman spectroscopy have been used to monitor the aging process while the hardness of the samples was used as a measure of the deterioration in the physical properties. The results were compared with those of a commercial submicrometer 3YSZ zirconia sample subjected to the same aging treatment and characterization. Nano3YSZ with <100 nm grain size did not exhibit degradation, whereas the submicrometer 3YSZ samples underwent severe degradation.