材料科学
纳米孔
结晶度
立方氧化锆
陶瓷
无定形固体
复合材料
脆性
退火(玻璃)
四方晶系
化学工程
纳米技术
矿物学
相(物质)
结晶学
化学
工程类
有机化学
作者
Jung Ho Kim,Dahye Shin,Yang Jeong Park,Dongchan Jang,Sung Oh Cho
出处
期刊:Nano Letters
[American Chemical Society]
日期:2019-11-14
卷期号:19 (12): 8488-8494
被引量:2
标识
DOI:10.1021/acs.nanolett.9b02838
摘要
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 °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.
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