Dynamic Fracture Toughness of TaC/CNTs/SiC CMCs Prepared by Spark Plasma Sintering

被引：1

作者：

Xie, Qiaoyun ^{[1
]}

Wosu, Sylvanus N. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Mech Engn, Pittsburgh, PA 15261 USA

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2015年 / 2015卷

关键词：

MECHANICAL-PROPERTIES; CARBON NANOTUBES; COMPOSITES;

D O I：

10.1155/2015/510356

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study focuses on the fracture toughness of TaC and carbon nanotubes (CNTs) reinforced SiC ceramic matrix composites (CMCs), prepared by spark plasma sintering (SPS) technique. A high densification of 98.4% was achieved under the sintering parameter of 133 degrees C/min, 1800 degrees C, and 90 MPa pressure. Vickers indentation was employed to measure the indentation toughness on the polished surface of ceramic samples, SEM was applied to directly observe the crack propagation after indentation, and split Hopkinson pressure bar (SHPB) was developed to determine the dynamic fracture toughness within the ceramic samples subjected to an impact in a three-point bending configuration.

引用

页数：8

共 21 条

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