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冲击损伤对C/C复合材料烧蚀性能的影响
  • 期刊名称：无机材料学报, 2008, 23(2):219-222
  • 时间：0
  • 分类：TB332[一般工业技术—材料科学与工程]
  • 作者机构：[1]西北工业大学材料学院,西安710072, [2]西北工业大学航空学院,西安710072
  • 相关基金：国家“973”资助项目（2006CB600908）;中国科协“自然科学基础性、高科技学术期刊”资助;国家自然科学基金重大计划（90405016）
  • 相关项目：空天飞行器材料与结构的性能评价及关键理论研究
关键词： C/C复合材料, SHPB, 冲击损伤, 烧蚀特性, C/C composites, SHPB, impact damage, ablative performances
中文摘要：

利用Split Hopkinson Pressure Bar（SHPB）装置,对炭化铪含量为2wt%的C/C复合材料进行了载荷峰值为137MPa的动态冲击损伤,采用氧乙炔烧蚀装置研究了冲击损伤对C/C复合材料烧蚀性能的影响,并结合扫描电镜讨论了冲击损伤对样品烧蚀机理的影响.研究结果表明：与未受冲击的C/C复合材料相比,冲击损伤后,复合材料的质量烧蚀率增加了40%,线烧蚀率增加了118%.

英文摘要：

The carbon felt/carbon （C/C） composites with 2wt% hafnium carbide were damaged by using a split Hopkinson pressure bar （SHPB） with the maximum impact loading of 137MPa or so, and the effect of dynamic impact damage on ablative properties of the C/C composites was investigated in oxyacetylene flame equipment with high velocity gas. The effect of impact damage on ablative mechanism of the composites was also discussed based on SEM observation. The results show that the linear ablation rate is increased by 118%, and the mass ablation rate is increased by 40% for the damaged C/C composites than those measured for the undamaged C/C composites.

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空天飞行器材料与结构的性能评价及关键理论研究
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