C/C-SiC复合材料的制备及其烧蚀性能
收稿日期: 2017-02-27
网络出版日期: 2017-12-30
基金资助
国家重点研发计划政府间国际科技创新合作重点专项资助项目(2016YFE0111200)
Preparation and ablation properties of C/C-SiC composites
Received date: 2017-02-27
Online published: 2017-12-30
采用料浆喷涂法将SiC粉添加到针刺碳毡中, 利用化学气相渗透(chemical vapor infiltration, CVI)与前驱体浸渍裂解(precursor infiltration pyrolysis, PIP)复合工艺制备C/CSiC复合材料. 借助X射线衍射(X-ray diffraction, XRD)与扫描电子显微镜(scanning electron microscope, SEM)观察材料的微观结构, 利用H2-O2焰烧蚀实验测试材料的抗烧蚀性能, 分析其烧蚀行为. 结果表明: 烧蚀500 s后, SiC含量为9%的C/C-SiC复合材料的抗烧蚀性能显著优于C/C复合材料, 其线烧蚀率降低了63%, 质量烧蚀率降低了76%. 烧蚀中心区, 烧蚀最严重, 且材料的烧蚀主要是升华和机械剥蚀, 并伴有氧化. 烧蚀过渡区, 熔融SiO2能够弥合材料的裂纹、孔隙等缺陷, 阻挡氧化性气氛进入材料内部, 使材料表现出优异的抗烧蚀性能. 材料的烧蚀主要是热氧化和H2-O2流的剪切剥蚀. 在烧蚀边缘区, 烧蚀轻微, 热氧化起主要作用.
关键词： C/C-SiC复合材料; H2-O2焰烧蚀; SiC粉; 料浆喷涂法
左亚卓, 李红, 耿真真, 王少雷, 杨敏, 任慕苏, 孙晋良 . C/C-SiC复合材料的制备及其烧蚀性能[J]. 上海大学学报(自然科学版), 2017 , 23(6) : 841 . DOI: 10.12066/j.issn.1007-2861.1905
C/C-SiC composites were prepared by adding SiC powder to the carbon felt performed before chemical vapor infiltration (CVI) and precursor infiltration pyrolysis (PIP) using slurry spraying. The micro structure of composites was studied with XRD and SEM. Ablation performance of the composites was investigated using H2-O2 flame ablation equipment. The results show that C/C-SiC composites had better anti-ablative performances compared with C/C composite after ablation for 500 s when SiC content of C/C-SiC composite is 9%. Linear and mass ablation rates of (C-SiC)f/C composites decreased by 63% and 76% respectively. At the ablation center zone, ablation of composites is most serious. The ablation mechanism is dominated by sublimation and mechanic aerosion, accompanied
by oxidation. In the ablation transitional zone, molten SiO2 could heal cracks and holes and other defects, and effectively prevent oxidizing atmosphere into the materials, making the materials exhibit excellent ablation. The main ablation mechanism was thermo-oxidation and H2-O2 flow shear erosion. In the ablation marginal zone, composites were ablated slightly. The main ablation mechanism was thermo-oxidation ablation.
Key words： C/C-SiC composites; H2-O2 flame ablation; SiC powder; slurry spraying
[1] 周帆, 曹英斌, 刘荣军, 等. C/C-SiC 复合材料高温防护研究进展[J]. 材料导报, 2016, 30(8): 68-74.
[2] 崔园园, 白瑞成, 孙晋良, 等. 熔融渗硅法制备C/C-SiC 复合材料的研究进展[J]. 材料导报, 2011, 25(1): 31-35.
[3] Wang Y, Chen Z F, Yu S J, et al. Ablation behavior and mechanism analysis of C/SiC composites[J]. Journal of Materials Research and Technology, 2016, 5(2): 170-182.
[4] Krenkel W, Berndt F. C/C–SiC composites for space applications and advanced friction systems [J]. Materials Science and Engineering A, 2005, 412(1/2): 177-181.
[5] Ogasawara T, Aoki T, Aly Hassan M S, et al. Ablation behavior of SiC fiber/carbon matrix composites under simulated atmospheric reentry conditions [J]. Composites Part A: Applied Science and Manufacturing, 2011, 42(3): 221-228.
[6] 王林山, 熊翔, 肖鹏, 等. 反应熔渗法制备C/C-SiC复合材料及其影响因素的研究进展[J]. 粉末冶金技术, 2003, 21(1): 37-41.
[7] 张虹, 白宏德, 白书欣, 等. 改性C/C复合材料快速制备与抗烧蚀性能考核[J]. 国防科技大学学报, 2016, 38(1): 20-25.
[8] 张智, 郝志彪, 闫联生. C/C–SiC 复合材料的制备方法及研究现状[J]. 炭素, 2008(2): 29-35.
[9] 肖鹏, 熊翔, 张红波, 等. C/C–SiC 陶瓷制动材料的研究现状与应用[J]. 中国有色金属学报, 2005, 15(5): 668-673.
[10] 魏连锋, 李克智, 吴恒, 等. SiC改性C/C复合材料的制备及其烧蚀性能[J]. 硅酸盐学报, 2011, 39(2): 251-255.
[11] Tang S F, Deng J Y, Liu W C. Mechanical and ablationproperties of 2D-carbon/carbon composites pre-infiltrated with a SiC filler [J]. Carbon, 2006, 44(14): 2877-2882.
[12] 实用化学手册编写组. 实用化学手册[M]. 北京: 科学出版社, 2001.
[13] Ylward G H, Findlay T J V. SI 化学数据表[M]. 周宁怀译. 北京: 高等教育出版社, 1985.
[14] 符斌. 常用化学手册[M]. 北京: 地质出版社, 1997.
[15] 王克秀. 固体火箭发动机复合材料基础[M]. 北京: 宇航出版社, 1994: 182.
[16] 聂景江, 徐永东, 张立同, 等. 化学气相渗透法制备三维针刺C/SiC复合材料的烧蚀性能[J]. 硅酸盐学报, 2006, 34(10): 1238-1242.
[17] Wang Y, Xu Y D, Wang Y G, et al. Effects of TaC addition on the ablation resistance of C/SiC [J]. Materials Letters, 2010, 64(19): 2068-2071.
[18] Xue L, Su Z A, Yang X, et al. Microstructure and ablation behavior of C/C-HfC composites prepared by precursor infiltration and pyrolysis [J]. Corrosion Science, 2015, 94: 165-170.
[19] Liu L, Li H J, Hao K, et al. Effect of SiC location on the ablation of C/C-SiC composites in two heat fluxes [J]. Journal of Materials Science & Technology, 2015, 31(4): 345-354.
[20] Fang D, Chen Z F, Song Y D, et al. Morphology and microstructure of 2.5 dimension C/SiC composites ablated by oxyacetylene torch [J]. Ceramics International, 2009, 35(3): 1249-1253.
[21] Cui Y Y, Li A J, Li B, et al. Microstructure and ablation mechanism of C/C-SiC composites[J]. Journal of the European Ceramic Society, 2014, 34(2): 171-177.
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