Microstructure and properties of carbon nanotube/zirconia composite

被引：102

作者：

Duszovda, Annamaria ^{[2
]}

Dusza, Jan ^{[1
]}

Tomasek, Karol ^{[2
]}

Blugan, Gurdial ^{[3
]}

Kuebler, Jakob ^{[3
]}

机构：

[1] Slovak Acad Sci, Inst Mat Res, Kosice 04353, Slovakia

[2] Tech Univ Kosice, Fac Met, Kosice 04200, Slovakia

[3] Swiss Fed Labs Mat Testing & Res, Lab High Performance Ceram, Empa, CH-8600 Dubendorf, Switzerland

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2008年 / 28卷 / 05期

关键词：

nanocomposites; mechanical properties; electrical properties; failure analysis;

D O I：

10.1016/j.jeurceramsoc.2007.09.011

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Sintering and hot pressing have been used for preparation of monolithic ZrO2 and zirconia-carbon nanotube (CNT) composite. The effect of the processing route and the CNT's addition on the microstructure, fracture/mechanical and electrical properties of the zirconia has been investigated at room temperature. The microstructure of the sintered and hot-pressed monolithic ZrO2 consists of a submicron-sized grains. The matrix of the ZrO2-CNT composite consists of a grains with even smaller size (approximately 140 nm) with relatively well dispersed carbon nanotubes. The hardness and the indentation toughness of the sintered monolithic zirconia are 1297 kg/mm(2) and 8.01 MPa m(0.5) and of the hot-pressed monolithic zirconia 1397 kg/mm(2) and 6.24 MPa m(0.5), respectively. The addition of the CNT's decreased the hardness and indentation toughness to 830 kg/mm(2) and 5.6 MPa m(0.5) however the electrical resistivity decreased significantly in comparison to the monolithic zirconia to the value of 0.1 Omega cm. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1023 / 1027

页数：5

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