Synthesis, microstructure and mechanical properties of Yttria Stabilized Zirconia (3YTZP) - Multi-Walled Nanotube (MWNTs) nanocomposite by direct in-situ growth of MWNTs on Zirconia particles

被引：47

作者：

Datye, Amit ^{[2
]}

Wu, Kuang-Hsi ^{[1
]}

Gomes, George ^{[1
]}

Monroy, Vivana ^{[1
]}

Lin, Hua-Tay ^{[3
]}

Vleugels, Jozef ^{[4
]}

Vanmeensel, Kim ^{[4
]}

机构：

[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[4] Katholieke Univ Leuven, Dept Met & Mat Engn, Louvain, Belgium

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 14期

关键词：

Carbon nanotubes; Ceramic-matrix composites; Mechanical properties; Scanning/transmission electron microscopy (STEM); Chemical vapor deposition (CVD); CARBON NANOTUBES; COMPOSITES; CERAMICS;

D O I：

10.1016/j.compscitech.2010.08.005

中图分类号：

TB33 [复合材料];

学科分类号：

080505 [复合材料];

摘要：

In this research, Yttria Stabilized Zirconia (3YTZP) - carbon nanotube (CNT) composites are fabricated by direct in-situ growth of CNTs on the Zirconia particles, followed by densification via the Spark Plasma Sintering (SPS) technique. Scanning electron microscopy analysis of the 3YTZP-CNT powders shows uniform distribution of CNTs without the formation of agglomerates frequently seen with the traditional ex-situ mixing of CNTs in ceramic compositions. The samples were sintered to nearly 100% theoretical density and with a finer grain size microstructure. High Resolution Transmission Electron Microscopy (HRTEM) and Raman Spectroscopy confirm CNT retention in the sintered nanocomposites up to 1600 degrees C. The flexural strength increases from similar to 260 MPa for samples without CNTs sintered at 1600 degrees C to 312 MPa for samples with similar to 4 wt.% CNTs sintered at the same temperature. A corresponding increase in the indentation fracture toughness is also observed for samples with similar to 4 wt.% CNTs sintered at 1600 degrees C as compared to samples sintered at the same temperature without CNTs. Published by Elsevier Ltd.

引用

页码：2086 / 2092

页数：7

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