纤维织构对C_f/SiC复合材料结构和性能的影响  

Effect of Fabric Structure on Mechanical Properties and Microstructure of C_f/SiC Composites

作　　者：周长城[1] 张长瑞[1] 周新贵[1] 胡海峰[1] 张玉娣[1] 

机构地区：[1]国防科技大学新型陶瓷纤维及其复合材料国防科技重点实验室,长沙410073

出　　处：《材料工程》2007年第10期45-48,共4页Journal of Materials Engineering

摘　　要：以先驱体浸渍裂解工艺制备了Cf/SiC复合材料,在相同工艺条件下,研究了四种纤维织构:2.5D,三维四向,三维五向,三维六向对复合材料结构和性能的影响。研究结果表明,2.5D纤维织构的复合材料,其力学性能优于其它三种织构的复合材料,2.5D织构的复合材料弯曲强度达到了406.25MPa,三维四向织构复合材料弯曲强度只有128.80MPa,三维五向织构复合材料159.74MPa,三维六向织构复合材料150.42MPa,并结合纺织学的结构理论对这种影响进行了剖析。　Carbon fiber reinforced silicon carbide composites were fabricated via infiltration and pyrolysis of precursor.The effects of different fabric structure on mechanical properties and microstructure of Cf/SiC composites were investigated.The results show that 2.5D fabric structural composites is superior to other three fabric structural composites remarkably on the aspect of mechanical properties.The flexural strength of 2.5D reached 406.25MPa,compared to three dimensional four direction（3D-4d） for 128.80MPa,and three dimensional five direction（3D-5d） for 159.74MPa and three dimensional six direction（3D-6d） for 150.42MPa.And the results were analyzed thoroughly from the point of view of textile technics.

关 键 词：CF/SIC PIP 纤维织构 复合材料 

分 类 号：TB323[一般工业技术—材料科学与工程]