采用CVI涂层和400℃空气氧化技术对炭纤维进行表面处理,借助偏光显微镜(PLM)、扫描电镜(SEM)和弯曲性能测试研究了炭纤维表面处理对2D中间相沥青基炭/炭复合材料的组织结构与弯曲性能的影响.结果表明:两种表面处理的材料均具有韧性断裂特征,CVI涂层表面处理后材料的"假塑性效应"更为显著,但是其抗弯强度较低,基体炭的组织结构为具有光学活性的热解炭和中间相沥青炭的流线型、广域流线型组织,材料内部形成多层次的界面结构,在断裂破坏过程中,主要发生基体内聚破坏;400℃空气氧化表面处理的材料的基体炭的组织结构为中间相沥青炭的小域、广域流线型组织,材料在断裂破坏过程中,表现为混合破坏,即基体内聚破坏和界面粘结破坏同时发生.
参考文献
| [1] | 李贺军.炭/炭复合材料[J].新型炭材料,2001(02):79-80. |
| [2] | SAVAGE G.Carbon-carbon composites[M].London,UK:Chapman and Hall,1993 |
| [3] | Morimoto T.;Kondo M.;Ueda T.;Ogura Y. .MULTILAYER COATING FOR CARBON-CARBON COMPOSITES[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(4):351-357. |
| [4] | Paul PP.;Schwab ST. .CARBON MATERIALS OBTAINED FROM ORGANOMETALLIC MODIFICATION OF PITCH AND ITS OXIDATION RESISTANCE PROPERTIES[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(1):89-95. |
| [5] | Matzinos PD.;Walker A.;Patrick JW. .THE VOID STRUCTURE OF 2-D C/C PREFORMS AND COMPOSITES - EFFECT OF THE NATURE OF THE MATRIX PRECURSOR COAL-TAR PITCH[J].Carbon: An International Journal Sponsored by the American Carbon Society,1997(4):507-513. |
| [6] | Anand K.;Gupta V. .THE EFFECT OF PROCESSING CONDITIONS ON THE COMPRESSIVE AND SHEAR STRENGTH OF 2-D CARBON-CARBON LAMINATES[J].Carbon: An International Journal Sponsored by the American Carbon Society,1995(6):739-748. |
| [7] | 孙乐民,李贺军,张守阳.沥青基碳／碳复合材料的组织特性[J].无机材料学报,2000(06):1111-1116. |
| [8] | L.M. Manocha;A. Warrier;S. Manocha .Microstructure of carbon/carbon composites reinforced with pitch-based ribbon-shape carbon fibers[J].Carbon: An International Journal Sponsored by the American Carbon Society,2003(7):1425-1436. |
| [9] | Lee KJ.;Chen ZY. .Microstructure study of PAN-pitch-based carbon-carbon composite[J].Materials Chemistry and Physics,2003(2):428-434. |
| [10] | 孙乐民,李贺军,张守阳.沥青基炭/炭复合材料的弯曲断裂特征[J].新型炭材料,2001(03):28-31,41. |
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