Enhanced anti-ablation performance of carbon/carbon composites modified with ZrC-SiC

被引：19

作者：

Zhao, Zhigang ^{[1
]}

Li, Kezhi ^{[1
]}

Liu, Qing ^{[1
]}

Li, Wei ^{[1
]}

Zhang, Yulei ^{[1
]}

机构：

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

来源：

VACUUM | 2018年 / 156卷

基金：

中国国家自然科学基金;

关键词：

Carbon/carbon composites; Precursor infiltration and pyrolysis; Reactive melt infiltration; Ablation; C/C; BEHAVIOR; MICROSTRUCTURE;

D O I：

10.1016/j.vacuum.2018.07.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ZrC-SiC inhibited carbon/carbon composites (C/C-ZrC-SiC) were fabricated by combining precursor infiltration and pyrolysis (PIP) of ZrC and reactive melt infiltration (RMI) of ZrSi2. The achieved C/C-ZrC-SiC composites exhibited an unusual microstructure. The dense ZrC-SiC matrix formed by RMI was distributed in the fiber webs. The ZrC-C matrix developed by PIP and isothermal chemical vapor infiltration (ICVI) was uniformly distributed in the non-woven layers. After ablation under oxyacetylene torch, C/C-ZrC-SiC composites exhibited a desirable ablation resistance. The formed ZrO2 with a framework structure acted as the barrier to effectively shield the ablation heat and withstand mechanical denudation of high speed flame stream. In the brim region of the ablated surface, the SiO2 layer was capable of further reducing ingress of oxygen into the materials below.

引用

页码：123 / 127

页数：5

共 21 条

[1] TEM characterization of spark plasma sintered ZrB2-SiC-graphene nanocomposite [J].