Ablative and Mechanical Properties of C/C-ZrC Composites Prepared by Precursor Infiltration and Pyrolysis Process

被引：53

作者：

Li, Kezhi ^{[1
]}

Xie, Jing ^{[1
]}

Li, Hejun ^{[1
]}

Fu, Qiangang ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Carbon Carbon Composites Res Ctr, Xian 710072, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2015年 / 31卷 / 01期

基金：

中国国家自然科学基金;

关键词：

C/C composites; Ceramic-matrix composites; Ablation performance; Mechanical properties; BEHAVIORS; MICROSTRUCTURE; FABRICATION;

D O I：

10.1016/j.jmst.2014.01.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

C/C-ZrC composites with continuous ZrC matrix were prepared by precursor infiltration and pyrolysis process using zirconium-containing polymer. Ablation properties of the composites were investigated by oxyacetylene flame with heat flux of 2380 and 4180 kW/m(2), respectively. The results showed that C/C-ZrC composites exhibited excellent ablation resistance under the heat flux of 2380 kW/m(2) for 120 s and a tree-coral-like ZrO2 protective layer formed after ablation. However, when the heat flux increased to 4180 kW/m(2), the maximum temperature of ablated surface reached 2500 degrees C and a strong degradation of ablation resistance was observed due to the weak bonding between the formed ZrO2 layer and the composites. The flexural strength of C/C-ZrC composites was 110.7 +/- 7.5 MPa. There were a large number of carbon fiber bundles pull-out, and the composites exhibited a pseudo-plastic fracture behavior.

引用

页码：77 / 82

页数：6

共 23 条

[1] Mechanism of ablation of 3D C/ZrC-SiC composite under an oxyacetylene flame [J].