2015
DOI: 10.4191/kcers.2015.52.6.417
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Effect of Porous Substrate on the Strength of Asymmetric Structure

Abstract: In this study, we investigate the effect of porous Al 2 O 3 substrate on the strengths of asymmetric structures after we prepare such a structure consisting of a dense Li 2 ZrO 3 top layer and porous Al 2 O 3 substrate layer. The porosity and elastic modulus of the substrate layer are controlled by sintering temperature, which has three values of 1150, 1250 and 1350 o C. The porosity is controlled in the range of ~ 30-50 vol%, elastic modulus is ~80-120 GPa and elastic mismatch E s /E c is ~ 0.6-1.0. Indentati… Show more

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