推进技术 ›› 2014, Vol. 35 ›› Issue (8): 1080-1085.

• 燃烧 传热 传质 • 上一篇    下一篇

C/C复合材料在再入模拟环境中烧蚀性能研究

王德文,査柏林,杨月诚,李红霞   

  1. 第二炮兵工程大学 动力工程系,陕西 西安 710025;第二炮兵工程大学 动力工程系,陕西 西安 710025;第二炮兵工程大学 动力工程系,陕西 西安 710025;第二炮兵工程大学 动力工程系,陕西 西安 710025
  • 发布日期:2021-08-15
  • 作者简介:王德文(1976—),男,博士,研究领域为C/C复合材料烧蚀性能。
  • 基金资助:
    陕西省基金项目(2013JM6003)。

Ablation Characteristics of C/C Composites In Reentry Simulation Conditions

  1. Department of Power Engineering,The Second Artillery Engineering University,Xi’an 710025,China;Department of Power Engineering,The Second Artillery Engineering University,Xi’an 710025,China;Department of Power Engineering,The Second Artillery Engineering University,Xi’an 710025,China;Department of Power Engineering,The Second Artillery Engineering University,Xi’an 710025,China
  • Published:2021-08-15

摘要: 为了研究轴棒法编织的高密度碳/碳(C/C)复合材料在再入飞行时的烧蚀性能,采用热等离子体地面模拟再入烧蚀系统对C/C复合材料进行烧蚀试验。试验中分别采用氮气(N2)、氧气(O2)和空气作为工作气体,对比研究C/C复合材料在不同环境中的烧蚀率和烧蚀性能。结果表明,三种情况下试样的烧蚀率和微观形貌有很大差异;纯氧气时氧化反应的线烧蚀率和质量烧蚀率分别为0.0423mm/s和0.0451g/s,大于纯氮气时氮化反应的0.0314mm/s和0.0338g/s,也大于空气成分时复合反应的0.0215mm/s和0.0208g/s;在试样烧蚀的热影响区发生轻微开裂;三种工况下的烧蚀机理不同,分别是碳的升华、碳的氧化和碳氮反应的某种组合。

关键词: 轴棒法C/C复合材料;再入;热等离子体;烧蚀率;微观形貌

Abstract: In order to study the ablation characteristics of axial carbon rod C/C composites,the ablation experiments were conducted by reentry simulation condition ablation system based on thermal plasma. The nitrogen(N2),oxygen(O2)and air were taken as the operation gases,and the ablation characteristics and ablation rates of the specimens in different conditions were compared. The results show that the micro-morphologies and the ablation rates are different in three operation gases conditions. The linear and mass ablation rates are listed as follows: oxidation of O2(0.0423mm/s and 0.0451g/s)> nitridation of N2(0.0314mm/s and 0.0338g/s)> composite reactions of air (0.0215mm/s and 0.0208g/s). There are some tiny cracks in thermal influencing areas,and the ablation mechanisms of the C/C composites in three operation gases conditions are differents. They are some combinations of sublimation of carbon,carbon oxide and carbon nitrogen reaction.

Key words: Axial carbon rod C/C composite material;Reentry;Thermal plasma;Ablation rate;Micromorphology