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Correlations between Strength and Acoustic Properties in Yttria‐Stabilized Zirconia Polycrystals
Author(s) -
Oishi Manabu,
Matsuda Yukihisa,
Noguchi Kenichi,
Masaki Takaki
Publication year - 1993
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.1151-2916.1993.tb06624.x
Subject(s) - materials science , attenuation , microstructure , composite material , transverse plane , attenuation coefficient , porosity , mineralogy , flexural strength , bulk density , optics , geology , physics , structural engineering , soil science , soil water , engineering
The strength, bulk density, and acoustic properties of nine Y 2 O 3 ‐stabilized ZrO 2 polycrystals (Y‐TZPs) were evaluated in the present study. The samples showed a strong correlation between strength and acoustic properties, a phenomenon that reflects the internal bulk structure, especially the Pore size distribution. Strength increased with a decrease in the attenuation coefficient and with an increase in the transverse wave velocity of the samples. On the other hand, the bulk density of the samples showed no clear relationship with strength. Bulk density reflects only the amount of pore volume in the test piece, whereas the acoustic properties are sensitive to defects or inhomogeneities in the microstructure. The attenuation coefficient and transverse wave velocity thus seem to be good parameters for estimating the strength of Y‐TZPs.