欢迎登录材料期刊网

材料期刊网

高级检索

以针刺整体炭毡为坯体,采用树脂浸渍和化学气相沉积混合法制备C/C多孔体,然后熔硅浸渗制得C/C-SiC复合材料;研究了C/C多孔体的高温热处理对C/C-SiC复合材料密度、孔隙度、力学性能及断裂方式的影响.结果表明:炭涂层进行高温热处理可改变复合材料的弯曲断裂方式,使其具有一定的"假塑性",弯曲强度下降约16 %,压缩强度提高约20 %,硬度增加;C/C多孔体的最终高温热处理可打开孔隙,有利于液Si的渗入,制备出密度较高(>2.0 g·cm-3)、开孔率较小(<4 %)的复合材料,但导致其力学性能下降,基本上不影响其断裂方式.

参考文献

[1] 闫联生,邹武,宋麦丽.制备工艺对炭纤维增强碳化硅基复合材料性能的影响[J].新型炭材料,1998(03):7-11.
[2] 李贺军.炭/炭复合材料[J].新型炭材料,2001(02):79-80.
[3] 宋麦丽,王涛,闫联生,邹武,余惠琴,刘毅佳.高性能C/SiC复合材料的快速制备[J].新型炭材料,2001(02):57-60.
[4] Xu Yongdong;Cheng Laifei;Zhang Litong .Carbon /silicon carbide composites prepared by chemical vapor infiltration combined with silicon melt infiltration[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(8):1179-1187.
[5] Karlsfeld A M .Production,properties and applications of ceramic matrix composites[J].cfi/Ber DKG,1999,76:30-35.
[6] Gern F H .Liquid silicon infiltration:description of infiltration dynamics and silicon carbide formation[J].Composites Part A:Applied Science and Manufacturing,1997,28A:355-364.
[7] YANG J;Ilegbusi O J .Kentics of silicon-metal infiltration into porous carbon[J].COMPOSITES,2000,31:617-625.
[8] Krenkel W .Cost effective processing of CMC composites by melt infiltration[J].Ceramic Engineering and Science Proceedings,2001,22:443-454.
[9] 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.
[10] Einset EO. .Analysis of reactive melt infiltration in the processing of ceramics and ceramic composites[J].Chemical Engineering Science,1998(5):1027-1039.
[11] Messner R P;Chiang Yet-Ming .Liquid-phase reaction-bonding of silicon carbide using alloyed silicon-molybdenum melts[J].Journal of the American Ceramic Society,1990,73(05):1193-1200.
[12] Hai-Tao Fang;Zhong-Da Yin;Jing-Chuan Zhu;Jae-Ho Jeon;Yoo-Dong Hahn .Effect of Al additive in Si slurry coating on liquid Si infiltration into carbon-carbon composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2001(13):2035-2041.
[13] 张为芹,田艳红,杨延风,张西萍,沈曾民.高温热处理对炭纤维性能的影响[J].新型炭材料,2001(03):52-54,57.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%