SiC_P 和短碳纤维混杂增强 ZA27 复合材料界面微结构研究

STUDY ON THE INTERFACE AND MICROSTRUCTURE OF SiC P AND SHORT CARBON FIBER HYBRID REINFORCED ZA27 COMPOSITE

通过ＴＥＭ对ＳｉＣＰ和短碳纤维混杂增强ＺＡ２７复合材料界面特性和微观结构观察，发现ＳｉＣＰ与基体之间的界面部分区域有不连续的界面析出产物。碳纤维与基体之间的界面结合较好，同样部分区域有不连续的界面析出产物。这些析出相均为铜锌铝相。此外，碳纤维与基体界面之间部分区域存在一层碳黑，这是因为碳纤维脱胶不完全引起的。此外，增强体微区分布不均匀。

The interfaces and microstructures of SiC P and short carbon fiber hybrid reinforced ZA27 composites have been observed through Transmission Electron Microscope and it was found that discontinuous interfacial precipitated products of rich copper ZnAl phase were formed at a part of areas among SiC P and short carbon fiber and ZA27 alloy matrix. The part of interfaces between carbon fiber and ZA27 alloy matrix had a layer of carbon because of the incomplete degum of carbon fibers. Besides, the reinforcements in microareas mainly aggregated at the end of solidification position of ZA27 alloy and showed nonuniform distribution.