Ablation Behavior of a Three-Dimensional Carbon/Silicon Carbide Composite Nozzle in an Ethanol/Oxygen Combustion Gas Generator

被引：10
作者：
Chen, Bo [1 ]
Zhang, Litong [1 ]
Cheng, Laifei [1 ]
Luan, Xingang [1 ]
机构：
[1] NW Polytech Univ, Natl Key Lab Thermostruct Composite Mat, Xian 710072, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2009年 / 6卷 / 02期
关键词：
CHEMICAL-VAPOR INFILTRATION; SILICON-CARBIDE; OXIDATION;
D O I：
10.1111/j.1744-7402.2008.02330.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The ablation properties of a three-dimensional carbon/silicon carbide composite nozzle were investigated via hot-fire testing by an ethanol/oxygen combustion gas generator simulating combustion environments of the liquid rocket engine. The linear ablation rate at the nozzle throat was 0.250 +/- 0.023 mm/s, and the overall mass ablation rate was 0.246 kg/(m(2) s). The ablation in the divergent section, convergent section, and in the regions near the throat grew severe by degree. Ablation mechanisms of the composite nozzle were predominated by the oxidation of the composite, and volatilization of the silica scale derived from oxidation of silicon carbide resulted in further ablation of the nozzle.
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收藏
页码：182 / 189
页数：8
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