以碳纤维为增强体, 热压烧结制备了Cf/SiC复合材料, 研究了烧结温度对Cf/SiC复合材料密度、结构及性能的影响. 研究发现: 提高烧结温度能够促进Cf/SiC复合材料的致密度; 当烧结温度低于1850℃时, 升高烧结温度, 复合材料的强度和断裂韧性也随之提高. 当烧结温度为1850℃时, 复合材料的性能最优, 弯曲强度达500.1MPa, 断裂韧性为16.9MPa·m 1/2. 当烧结温度达到1880℃时, 复合材料性能反而下降.
Cf/SiC composites reinforced by carbon fiber were fabricated by hot-pressing. The effects of sintering temperature on the densities, microstructure and mechanical properties were studied. Densities of the Cf/SiC composites are increased with the increase of sintering temperature, and the bending strength and fracture toughness are increased with the sintering temperature increasing from 1800℃ to 1850℃, The highest bending strength and fracture toughness of the composites fabricated at 1850℃ are 500.1MPa and 16.9MPa·m 1/2, respectively. However, when the temperature increases to 1880℃, the mechanic properties of the composite decreases.
参考文献
| [1] | |
| [2] | Naslain R. Comp. Sci. Tech., 2004, 64 (2): 155--170. [2] Kaya H. Comp. Sci. Tech., 1999, 59 (6): 861--872. [3] Naslain R. CVI-composites. In Warren R, editor, Ceramic matrix composites chapter, 1992. 199--244. [4] Lamouroux F, Bourrat X, Naslain R. Carbon, 1995, 33 (4): 525--535. [5] Kim H, Chung G Y, Koo H H, et al. Korean J. Chem. Eng., 2004, 21 (5): 929--934. [6] Katoh Y, Kotani M, Kishimoto H, et al. J. Nucl. Mat., 2001, 289 (1-2): 42--47. [7] 所俊, 郑伟, 肖加余, 等. 宇航材料工艺, 2000, 30 (2): 29--32. [8] He X B. Mater. Chem. Phy., 2002, 74 (3): 300--305. [9] Yoshida K, Imai M, Yano T. Comp. Sci. Tech., 2001, 61 (9): 1323--1329. [10] Saynao A, Sutoh C, Suyama S, et al. J. Nucl. Mater., 1999, 271 & |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%