采用基体改性技术将ZrC引入C/C复合材料中,制备了一种C/C-ZrC复合材料.借助X射线衍射仪、扫描电镜及能谱等手段,对材料的微观结构进行了表征,采用三点弯曲试验研究了材料的力学性能,讨论了ZrC的添加对复合材料断裂行为的影响.结果表明:引入的ZrC相在材料中分布较连续,与C/C复合材料相比,ZrC的引进使得复合材料的弯由强度有所提高,但断裂模式由假塑性变为脆性断裂,其原因与材料中碳纤维与基体较强的界面结合有关.
C/C -ZrC composites were fabricated by inner-modification method via introducing ZrC into C/C composites. The structure and morphology of the composites were characterized by XRD, SEM and EDS analysis, and the mechanical properties of the materials were investigated by three point bending tests. The effect of ZrC additives on fracture behavior of the composites was studied. The results show that the ZrC phase reveals a continuous distribution in the composites. Compared with carbon/carbon composites without ZrC additives, the flexural strength of C/C - ZrC composites was increased by about 33.39% than that of the naked C/C composites, and the fracture mode of the composites was transformed from toughness to brittleness after the ZrC addition. The change of the fracture mode was mainly caused by to the strong interface combination between the carbon fibers and the substrate.
参考文献
| [1] | Zhu YC.;Sato Y.;Iwamoto N.;Ohtani S. .The improvement in oxidation resistance of CVD-SiC coated C/C composites by silicon infiltration pretreatment[J].Carbon: An International Journal Sponsored by the American Carbon Society,1998(7/8):929-935. |
| [2] | Kim JI;Kim WJ;Choi DJ;Park JY;Ryu WS .Design of a C/SiC functionally graded coating for the oxidation protection of C/C composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(8):1749-1757. |
| [3] | Fu Q G;Li H J;Shi X H et al.Silicide coating for tection of C/C composites at 1 873 K[J].Surface and Coatings Technology,2006,201(06):3 082-3 086. |
| [4] | Sayir A .Carbon fiber reinforced hafnium carbide composite[J].Journal of Materials Science,2004(19):5995-6003. |
| [5] | 李江鸿,张红波,熊翔,肖鹏,赵磊,黄伯云.含钽树脂先驱体转变生成TaC的过程研究[J].无机材料学报,2007(05):973-978. |
| [6] | V. Craciun;D. Craciun;J.M. Howard;J. Woo .Pulsed laser deposition of crystalline ZrC thin films[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2007(11):4636-4639. |
| [7] | M.S. Song;B. Huang;M.X. Zhang;J.G. Li .Formation and growth mechanism of ZrC hexagonal platelets synthesized by self-propagating reaction[J].Journal of Crystal Growth,2008(18):4290-4294. |
| [8] | Tong QF;Shi JL;Song YZ;Guo QG;Liu L .Resistance to ablation of pitch-derived ZrC/C composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(12/12):2495-2500. |
| [9] | 王俊山,李仲平,敖明,许正辉,刘朗,胡子君,彭维周.掺杂难熔金属碳化物对炭/炭复合材料烧蚀机理的影响[J].新型炭材料,2006(01):9-13. |
| [10] | 肖鹏,谢建伟,熊翔.3D C/SiC复合材料的力学性能[J].中南大学学报(自然科学版),2008(04):718-722. |
| [11] | 张雨雷,李贺军,姚西媛,付前刚,李克智.C/SiC/Si-Mo-Cr复合涂层碳/碳复合材料力学性能研究[J].无机材料学报,2008(04):725-728. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%