| 燃气流速对EPDM绝热材料炭化层结构特征的影响 |
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| 引用本文： | 刘泽祥,胡春波,李江,王书贤,徐义华.燃气流速对EPDM绝热材料炭化层结构特征的影响[J].固体火箭技术,2009,32(6). |
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| 作者姓名： | 刘泽祥 胡春波 李江 王书贤 徐义华 |
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| 作者单位： | 1. 西北工业大学,燃烧、流动及热结构重点实验室,西安,710072
2. 南昌航空大学,航空与机械工程学院,南昌,330063 |
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| 摘 要： | 基于一种可变流速的烧蚀发动机,在含铝燃气环境中对三元乙丙绝热材料炭化层的结构特征开展了烧蚀试验研究,并对绝热材料表面炭化层进行了SEM分析及能谱分析.试验结果表明,绝热层表面燃气流速不同,所生成的炭化层表面、背面及侧面形貌及孔隙都有很大区别;燃气流速增大,炭化层厚度明显变薄,表面铝、硅氧化物沉积增加,同时炭化层材质疏松程度加大,结构强度减弱.
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| 关 键 词： | 烧蚀 三元乙丙绝热材料 炭化层 SEM分析 燃气流速 |
Influence of gas velocity on structure characteristics of char layer of EPDM insulator |
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| LIU Ze-xiang,HU Chun-bo,LI Jiang,WANG Shu-xian,XU Yi-hua.Influence of gas velocity on structure characteristics of char layer of EPDM insulator[J].Journal of Solid Rocket Technology,2009,32(6). |
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| Authors: | LIU Ze-xiang HU Chun-bo LI Jiang WANG Shu-xian XU Yi-hua |
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| Institution: | LIU Ze-xiang1,HU Chun-bo1,LI Jiang1,WANG Shu-xian1,XU Yi-hua2(1.Key Laboratory of Combustion,Flow and Thermal-Structure,Northwestern Polytechnical University,Xi'an 710072,China,2.School of Aeronautic and Mechanical Engineering,Nanchang Aeronautic University,Nanchang 330063,China) |
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| Abstract: | Based on the ablative motor with variable gas velocity,ablation experiment was conducted to investigate structure characteristics of char layer of EPDM insulator in aluminous gas environment,and char layer of insulator was analyzed by means of SEM and EDS.The results show that the char layer on the surface,back-face and side-face have different pattern and porosity at different gas velocities;When gas velocity rises,the thickness of char layer is decreased obviously,quantity of Al and Si oxide deposit on th... |
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| Keywords: | ablation EPDM insulator char layer SEM analysis gas velocity |
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