王德文,李聪,孟东容,何庆飞,田赛.碳/碳-碳化硅复合材料在舰载机尾流场中烧蚀性能研究[J].稀有金属材料与工程,2019,48(7):2317~2322.[WANG De-wen,LI Cong,MENG Dong-rong,HE Qing-fei,TIAN Sai.Study on Ablative Properties of C/C-SiC Composites in the Flow Field of Carrier-based Aircraft[J].Rare Metal Materials and Engineering,2019,48(7):2317~2322.]
碳/碳-碳化硅复合材料在舰载机尾流场中烧蚀性能研究
投稿时间:2018-09-26  修订日期:2018-12-27
中文关键词:  关 键 词:碳/碳-碳化硅复合材料  舰载机  尾流场  烧蚀率  热震
基金项目:国家科技重大专项(2017ZX04011010);青年科学基金项目(51605480);西京学院(XJ170125)
中文摘要:
      为了提高航空母舰燃气导流板的工作性能,将碳/碳-碳化硅复合材料(C/C-SiC)试件在舰载机尾流中做模拟起飞工况的多次重复烧蚀试验,测定试件的烧蚀率和抗热震性能;采用扫描电镜(SEM)和微CT观察试件烧蚀后的微观形貌,采用能谱分析(EDS)测量燃烧产物的成份,对试件的烧蚀机理和热震损伤机制进行分析。结果表明:试件的线烧蚀率约为0.0405mm/s,质量烧蚀率约为0.0349g/s。在热影响区,复合材料基体在热震的作用下出现裂纹,而氧化反应不明显;在过渡区,热震使试件发生氧化反应生成SiO2在碳纤维的周围沉积,形成包鞘结构,有效地阻滞了氧化反应向内部传递,降低了试件的烧蚀率;在烧蚀中心区,生成的SiO2易被高速气流吹除掉而无法大量沉积,对氧化反应的阻滞作用不大,试件在此处烧蚀成凹坑,碳纤维呈尖笋状分布;试件的损伤机制是裂纹和氧化共同作用的结果,复合材料总体表现出优异的抗烧蚀性能。
Study on Ablative Properties of C/C-SiC Composites in the Flow Field of Carrier-based Aircraft
英文关键词:C/C-SiC Composite  Carrier-based Aircraft  Wake Flow Field  Ablation Rate  Thermal Shock
英文摘要:
      In order to improve the working performance of the gas deflector of aircraft carrier, the ablation test intended for simulating the takeoff condition is conducted by placing the test specimens of C/C-SiC composite in the wake flow of carrier-based aircraft so as to measure the ablative rate of the test specimens. The ablation mechanism and thermal shock damage of the test specimens are analyzed by adopting a scanning electron microscope (SEM) and micro-CT to observe the micro structure of the test specimens after ablated. By using energy dispersive spectrometry (EDS), the components of combustion products are measured to analyze the ablation mechanism and thermal shock damage of the test specimens. According to the result, the linear ablative rate of the test specimen is about 0.0405mm/s and its mass and its mass ablative rate is about 0.0349g/s. The heat affected zone experiences matrix crack and unapparent oxidation reaction. In the transition zone, the SiO2 produced by the reaction is precipitated around the carbon fibers and forms a sheathing structure, thus effectively retarding oxidation reaction from transferring inward and reducing the ablative rate of the test specimen. In the center of ablation, the retardation of SiC on oxidation reaction is small and the test specimen forms a concave pit, with carbon fibers being distributed in the shape of pointed bamboo shoots. On the whole, the material gives its outstanding anti-ablative performance.
作者单位E-mail
王德文 西京学院 wangdewen1@163.com 
李聪 西京学院  
孟东容 西京学院  
何庆飞 西京学院  
田赛 西京学院  
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