采用CVI结合浆料浸渍工艺制备2D C/SiC复合材料.研究了SiC微粉对复合材料微结构和力学性能的影响.结果表明,当碳纤维预制沉积SiC 80h后,微粉主要渗入到纤维束间.复合材料的力学强度随着渗微粉前CVI时间的增加及渗入浆料浓度的降低而增加.微粉的渗入大大降低了材料的层间剪切强度,而对材料的拉伸强度影响较小.
2D C/SiC composites were fabricated by chemical vapor infiltration (CVI) combining with slurry infiltration (SI) process. Effects of content of SI-SiC particles on the microstructure and mechanical per-formances were investigated. The particles can be infiltrated into inter-bundle pores of fiber preform after CVI SiC for 80h. The density and mechanical strength of the as-fabricated composites increase not only with increas-ing the CVI SiC time before SI process, but also with decreasing content of the particles. The SI process greatly reduces the interlaminar shear strength, and has little influence on the tensile strength.
参考文献
| [1] | Steyer TE.;Walls DP.;Zok FW. .Stress rupture of an enhanced nicalon/silicon carbide composite at intermediate temperatures[J].Journal of the American Ceramic Society,1998(8):2140-2146. |
| [2] | R. Naslain .Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview[J].Composites science and technology,2004(2):155-170. |
| [3] | Opeka MM;Talmy IG;Zaykoski JA .Oxidation-based materials selection for 2000 degrees C plus hypersonic aerosurfaces: Theoretical considerations and historical experience[J].Journal of Materials Science,2004(19):5887-5904. |
| [4] | Tang SF;Deng JY;Wang SJ;Liu WC .Fabrication and characterization of an ultra-high-temperature carbon fiber-reinforced ZrB2-SiC matrix composite[J].Journal of the American Ceramic Society,2007(10):3320-3322. |
| [5] | Carlo Alberto Nannetti;Alberto Ortona;Dario A. de Pinto .Manufacturing SiC-Fiber-Reinforced SiC Matrix Composites by Improved CVI/Slurry Infiltration/Polymer Impregnation and Pyrolysis[J].Journal of the American Ceramic Society,2004(7):1205-1209. |
| [6] | 唐学原,茹红强.SiC陶瓷浆料流变性能的研究[J].厦门大学学报(自然科学版),2004(04):527-530. |
| [7] | Cheng Laifei .Oxidation behavior of three dimensional C/SiC composites in air and combustion gas environments[J].Carbon: An International Journal Sponsored by the American Carbon Society,2000(15):2103-2108. |
| [8] | Torben K.Jacobsen;Povl Brondsted .Mechanical Properties of Two Plain-Woven Chemical Vapor Infiltrated Silicon Carbide-Matrix Composites[J].Journal of the American Ceramic Society,2001(5):1043-1051. |
| [9] | M. WANG;C. LAIRD .CHARACTERIZATION OF MICROSTRUCTURE AND TENSILE BEHAVIOR OF A CROSS-WOVEN C-SiC COMPOSITE[J].Acta materialia,1996(4):1371-1387. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%