颗粒分散技术在真空液相浸渗制备C_f/Al复合材料中的应用  

Application of Particles Scattering Technology in C_f/Al Composites

作　　者：王新坤[1] 汪定江[2] 陈名华[2] 

机构地区：[1]北京航空工程技术研究中心,北京100076 [2]空军第一航空学院,河南信阳464000

出　　处：《材料开发与应用》2005年第4期29-33,共5页Development and Application of Materials

摘　　要：采用真空反压液相浸渗工艺,以碳纤维增强铝为研究对象,探讨了M40J纤维增强AlMg10复合材料制备工艺中,SiC及淀粉分散颗粒对复合材料微观组织及性能的影响。结果表明,碳化硅可以减少铝液在束内的浸渗阻力,并使纤维分布均匀,从而提高复合材料构件的成型性和力学性能。经过5%SiC+3%淀粉溶液的分散后,复合材料的体积分数由72%降低到51%,而复合材料的拉伸强度提高了131MPa,达到498MPa。Particle scattering technolog was employed in the fabrication of M40J carbon fiber reinforced AlMg10 alloy composite with vacuum pressure infiltration process. The influence of SiC and arnylum scattering particles on the microstructure and property of the Cf/Al composits was investigated. The results indicated that SiC particle is conducible to reducing infiltration resistance of molten aluminum into fiber bunch and the well-distribution of th tiber,and so improving the forming and mechanical property of the composite structure. When the fibers were scattered with 5 % SiC and 3 % amylum, particles solution, the volume fraction of fibers in the composite decrease from 72 % to 51%, the tensile strength of the composite reached 498MPa, 131MPa higher than that of the coml3osite without particle scattering.

关 键 词：颗粒分散 真空液相浸渗 碳/铝复合材料 

分 类 号：TB33[一般工业技术—材料科学与工程]