颗粒分散技术在真空液相浸渗制备Cf/Al复合材料中的应用

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。

Application of Particles Scattering Technology in Cf/Al Composites

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.