本研究制备出了以莫来石为界面层的炭纤维增强Si-C-N陶瓷基复合材料(C/Mullite/Si-C-N).使用三点弯曲法研究了复合材料在室温、1300℃和1600℃时的弯曲断裂行为,利用扫描电镜(SEM)和透射电镜(TEM)观察了复合材料的组织和弯曲断口形貌.结果表明:在室温和1300℃时,C/Mullite/Si-C-N复合材料的断口呈现出明显的脆性断裂特征；而在1600℃时,则呈现出韧性断裂特征.1300℃时的弯曲强度高于室温强度,模量则与室温下的基本相等.1600℃时,复合材料的弯曲强度和模量都明显下降.与具有热解炭界面层的C/Si-C-N复合材料相比,采用莫来石界面后,C/Si-C-N复合材料的强度明显下降.
参考文献
| [1] | WANG M D;LAIRD C .Tension-tension fatigue of a cross-woven C/SiC composite[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1997,230(1-2):171-182. |
| [2] | Ken Goto;Yuko Furukawa;Hiroshi Hatta .Fatigue behavior of 2D laminate C/C composites at room temperature[J].Composites science and technology,2005(7/8):1044-1051. |
| [3] | 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. |
| [4] | LABRUQU(E)RE S;BLANCHARD H;PAILLER R et al.Enhancement of the oxidation resistance of interfacial area in C/C composites.Part Ⅱ:oxidation resistance of B-C,Si-B-C and Si-C coated carbon preforms densified with carbon[J].Journal of the European Ceramic Society,2002,22(07):1011-1021. |
| [5] | LABRUQU(E)RE S;GUEGUEN J S;PAILLER R et al.Enhancement of the oxidation resistance of the interfacial area in C/C composites.Part Ⅲ:the effect of oxidation in dry or wet air on mechanical properties of C/C composites with internal protections[J].Journal of the European Ceramic Society,2002,22(07):1023-1030. |
| [6] | Guofeng Lu;Shengru Qiao;Chengyu Zhang .Oxidation protection of C/Si-C-N composite by a mullite interphase[J].Composites. Part A, Applied science and manufacturing,2008(9):1467-1470. |
| [7] | Guofeng Lu;Shengru Qiao;Juntao Hou;Manfeng Gong .Mullite interlayer of C/Si-C-N composites fabricated by PIP[J].Materials Science Forum,2008(2):881-885. |
| [8] | WITHERS P J.Elastic and thermoelastic properties of brittle matrix composites[A].Oxford,UK:Elsevier Science Ltd,2000:2-9. |
| [9] | Hans Jurgen Seifert;Jianqiang Peng;Hans Leo Lukas .Phase equilibria and thermal analysis of Si-C-N ceramics[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2001(2):251-261. |
| [10] | Wang ZC.;Katz S.;Peng JQ.;Seifert HJ.;Bill J.;Aldinger F.;Kamphowe TW. .Effects of polymer thermolysis on composition, structure and high-temperature stability of amorphous silicoboron carbonitride ceramics[J].Journal of Materials Science Letters,2000(19):1701-1704. |
| [11] | 周玉.陶瓷材料学[M].北京:科学出版社,2004:126-127. |
| [12] | Jiehua Zhong;Shengra Qiao;Guofeng Lu .Rapid fabrication of C/C/SiC composite by PIP of HMDS[J].Journal of Materials Processing Technology,2007(1/3):358-362. |
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：
-
10%
-
20%
-
30%
-
40%
-
50%