Mechanical Response of Hierarchical Ysz Membranes with Multi-Scale Voids and Anisometric Macro-Void
Mechanically strong but highly porous structured ceramics are desirable for a range of applications like water purification and energy conversion. Yttria-stabilized zirconia membranes, possessing a hierarchical arrangement of voids from hundreds of micrometers to nanometers, were prepared by a non-solvent induced phase separation technique. Effects of the multi-scale voids on stress distributions and related mechanical properties were experimentally studied and simulated. The gradually varying diameter of the finger-like voids led to a loading direction dependent fracture strength. Meanwhile, no strength degradation was found when penetration depths of these macro-voids increased from 70% to 80% of the membrane thickness, because the void tails caused no interference to the bending stress. The sponge-like structure surrounding the finger-like voids absorbed strains, and the resultant stress concentration determined the fracture strength
Year of publication: |
[2022]
|
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Authors: | Cai, Huangyue ; Zhang, Zifan ; Shan, Xiao ; Wang, Xin ; Fan, Xiaohui ; Zhao, Xiaofeng ; Guo, Fangwei |
Publisher: |
[S.l.] : SSRN |
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