Enhanced toughness of zirconia ceramics with graphene platelets consolidated by spark plasma sintering

被引：26

作者：

Li, Shuang ^{[1
]}

Xie, Zhipeng ^{[2
]}

Zhang, Yumin ^{[3
]}

Zhou, Yufeng ^{[3
]}

机构：

[1] Shandong Univ Technol, Sch Resources & Environm Engn, Zibo, Peoples R China

[2] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing, Peoples R China

[3] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin, Heilongjiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2017年 / 14卷 / 06期

关键词：

aging; ceramic matrix composites; fracture mechanics; toughness; zirconia: tetragonal polycrystals; MECHANICAL-PROPERTIES; COMPOSITES; NANOCOMPOSITES; ALUMINA;

D O I：

10.1111/ijac.12742

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Graphene platelets reinforced zirconia (GPLs/ZrO2) composites were prepared by spark plasma sintering in the present work. The effects of GPLs content on the densification route, microstructure feather, mechanical properties, and aging behaviors of such composites were investigated. In spite of the impeding effect of GPLs, high relative density of 98% was achieved for the composites owing to the uniform dispersion of GPLs. The addition of GPLs contributed to enhanced fracture toughness of the composites; when the added content was 1.0 wt.%, its fracture toughness reached up to 8.6 MPa center dot m(1/2). Also, aging behavior of the GPLs/ZrO2 composites was investigated at 134 degrees C for 24 hours. The monolithic ZrO2 ceramic and GPLs/ZrO2 composites presented residual ratio of 55% and 72% in fracture toughness, respectively. Thus, the incorporation of GPLs inhibited phase transformation from tetragonal phase to monoclinic phase of zirconia.

引用

页码：1062 / 1068

页数：7

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