碳纤维增强锌基合金复合材料已经用液态渗透法制造出来了,并且进行了拉伸和冲击试验。本文着重对拉伸和冲击断口用扫描电镜和电子探针进行了分析。结果说明纤维与锌或锌合金的界面结合很弱,以致在它们的断口上有大量的纤维拔出。这种复合材料的失效是受基体的解理断裂控制的,所以基体的韧性及纤维和基体的结合力影响复合材料的断裂特性。 Carbon fiber reinforced zinc-based alloy composites have been fabricated by liquid infiltration and subjected to tensile and impact tests. This article focuses on the tensile and impact fracture using scanning electron microscopy and electronic probes were analyzed. The results show that the interface between the fibers and the zinc or zinc alloy is so weak that there is a significant amount of fiber pull-out at their fracture. The failure of this composite material is controlled by the cleavage and fracture of the matrix, so the toughness of the matrix and the binding force between the fiber and the matrix affect the fracture properties of the composite.