C_f/Mg复合材料异形纤维预成形体制备方法  

Preparation Methods of Shaped Preforms for C_f /Mg Composites

作　　者：房鑫[1] 齐乐华[1] 周计明[1] 卫新亮[1] 关俊涛[1] 张丽丹[1] 

机构地区：[1]西北工业大学机电学院

出　　处：《航空制造技术》2015年第19期95-98,共4页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51275417;51221001);国家高技术研究发展计划(863计划)(2013AA8011004B)资助项目

摘　　要：针对Cf/Mg复合材料异形纤维预成形体制备成本高、难度大等问题,提出了纤维0°/90°等比例铺放、0°/90°不等比例铺放、纤维缠绕定型、纤维编织加固等4种不同的预成形体制备方法。结果表明:内层采用碳纤维束环向缠绕可对预成形体进行有效增强,保证织物排列紧密,避免剪切造成的织物蓬松等问题,体积分数可提高至40%左右;表层采用编织工艺整体加固可以有效抵抗液态金属冲刷,尺寸稳定性良好,较未使用编织加固前提高了65%。In order to solve high cost, difficul- ty in fabricating Cf/Mg composites shaped preforms, four fabricating processes named ＂0°/90° equal proportion fiber placement＂, ＂0°/90° unequal proportion fiber placement＂,＂ filament winding stereotype＂ and ＂weaving reinforcement＂ are proposed. The experimental results show that the per- formance of preforms fabricated by inner layer filament winding is significantly improved. Fibers are closely ar- ranged, textile fluffy caused by cutting is avoided, thus, the volume fraction can be increased to about 40%. Preforms fabricated by surface layer weaving reinforcement can re- sist the erosion of liquid metal effectively. Compared with preforms unused weaving reinforcement, dimension stabil- ity is improved by 65%.

关 键 词：Cf/Mg复合材料 异形 纤维预成形体 制备 

分 类 号：TB333[一般工业技术—材料科学与工程]