以中间相沥青浸渍整体碳毡发泡技术制备的一种新型多孔C/C泡沫复合材料为预制体,通过液相硅浸渗(LSI)工艺制备了C/SiC复合材料,研究了预制体不同孔隙率对Si浸渗及C/SiC复合材料力学性能和微观形貌的影响,分析了复合材料的物相组成和晶体结构.结果表明,采用发泡技术可以快速有效地实现C/C预制体的致密化处理.预制体孔隙率为65.41%时液相硅浸渗处理后所得复合材料性能最好,密度为2.64g/cm3,弯曲强度为137MPa,弹性模量为150GPa.纤维未作表面抗硅化涂层处理以及复合材料中存在闭孔是C/SiC复合材料性能不佳的主要原因.
参考文献
| [1] | Kelly A .Composite materials after seventy years[J].Journal of Materials Science,2006(3):905-912. |
| [2] | Padmavathi N;Subrahmanyam J;Ray K et al.Carbon fiber reinforeed silicon carbide mini-composites-solution approach[J].Journal of Materials Processing Technology,2008,204:434. |
| [3] | Schulte-Fischedick J.;Zern A.;Mayer J.;Ruhle M.;Friess M.;Krenkel W. Kochendorfer R. .The morphology of silicon carbide in C/C-SiC composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):146-152. |
| [4] | 罗瑞盈 .碳/碳复台材料制备工艺及研究现状[J].兵器材料科学与工程,1998,21(01):64. |
| [5] | 李崇俊,马伯信,金志浩.碳/碳复合材料的新发展[J].材料科学与工程,2000(03):135-140. |
| [6] | 杨海峰,王惠,冉新权.碳/碳复合材料的快速致密化工艺[J].材料导报,2000(11):50-52. |
| [7] | 宋国英,罗瑞盈,吴小文,章劲草.液相法快速制备炭/炭复合材料的动力学及微观结构研究[J].炭素技术,2008(06):4-9. |
| [8] | 刘红林,金志浩,郝志彪,曾晓梅.低成本炭/炭复合材料的研究进展--化学液相沉积工艺[J].固体火箭技术,2007(06):529-533. |
| [9] | Chang T;Nakagawa T;Okura A .Studies on a new manufacturing process of carbon fiber reinforced carbon matrix(C/C)composites[R].Report of the Institute of Industrial Science.The University of Tokyo,1991. |
| [10] | 张仁钦,罗瑞盈,李军,罗京华.新型炭纤维/泡沫炭预制体的制备及致密化研究[J].炭素技术,2007(01):1-4. |
| [11] | 李红,孙晋良,任慕苏,周春节,张家宝.增强毡C/C复合材料的结构和性能[J].材料科学与工程学报,2004(01):52-54. |
| [12] | 赵俊国,徐君,周师庸.碳/碳复合材料制备方法及其新理论[J].鞍山钢铁学院学报,2002(05):333-337. |
| [13] | Tsuo I H;Low H Y .A study on the volumetric expansion of the benzoxazines-based phenolic resin[J].Macromolecules,1997,30(04):1099. |
| [14] | Wu X W;Luo R Y et al.Microstructure and mechanical properties of carbon foams and fibers reinforced carbon composites densified by CLVI and pitch impregnation[J].Composites Part A:Applied Science and Manufacturing,2009,40:225. |
| [15] | Klett J.;Romine E.;Walls C.;Burchell T.;Hardy R. .High-thermal-conductivity, mesophase-pitch-derived carbon foams: effect of precursor on structure and properties[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(7):953-973. |
| [16] | Richard H;Joseph W H.Graphitic foams as potential Structural materials[A].Buffalo.New York,1993:100. |
| [17] | Richard B H .Performance limits for stiffness-critical graphitic foam structures[J].Journal of Composite Materials,1996,30:1922. |
| [18] | Tan Seng C .Microcellular carbon foams and microcellular C/C composites fabricated therefrom[P].US,6339031,1998-12-29. |
| [19] | Frieβ M;Krenkel W;Brandt R.Influence of process parameters on the thermo physical properties of C/C-SiC[A].Weinheim:Federal Republic of Germany,2001:328. |
| [20] | 武七德,鄢永高,郭兵健,李美娟,刘小磐.以淀粉为填充剂的碳坯渗硅制备反应烧结碳化硅陶瓷[J].无机材料学报,2004(02):302-306. |
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