Ductilization of Nanoporous Ceramics by Crystallinity Control

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 101
  • Download : 0
Synthesizing ceramic materials with a significant amount of deformability is one of the most important engineering pursuits. In this study, we demonstrate the emergence of metal-like plasticity through the crystallinity control in the monolithic zirconia with the vertically aligned honeycomb-like periodic nanopore structures fabricated using the anodizing technique. The crystalline orders of the nanoporous zirconia films vary between monoclinic, tetragonal, and amorphous phases after the heat treatment and/or proton irradiation, whereas the vertical pore structures are maintained. The micropillar compression tests on those samples reveal a large amount of plasticity, more than 20% of total stains, in the as-anodized and proton-irradiated samples, both of which contain the amorphous phase. In contrast, the fully crystallized zirconia that resulted from annealing at 500 degrees C shows the brittle failure, the typical characteristic of conventional ceramic foams. These results offer a new opportunity for the nanoporous ceramic materials to be used in various applications, benefited from the tunable structural stability.
Publisher
AMER CHEMICAL SOC
Issue Date
2019-11
Language
English
Article Type
Article
Citation

NANO LETTERS, v.19, no.12, pp.8488 - 8494

ISSN
1530-6984
DOI
10.1021/acs.nanolett.9b02838
URI
http://hdl.handle.net/10203/270924
Appears in Collection
NE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0