泡沫铝基复合材料的研究进展

Recent Advances in Aluminum Matrix Composite Foam

介绍了泡沫铝基复合材料的研究进展,概述以Al_2O_3、Si C为代表的硬质陶瓷颗粒增强相以及Al_2O_3短纤维、碳纤维等纤维增强相的加入对泡沫铝基复合材料的性能影响。研究表明,增强相的加入可有效解决发泡过程难以控制,所得成品存在的气泡大小不一、分布不匀,材料稳定性差等问题。此外,适量增强相的加入可有效提高泡沫铝基体的压缩强度、吸能效率以及阻尼性能,但是过量增强相的添加反而会引起泡沫铝基体的脆性增强,造成该复合材料性能的下降。

The research progress of composite foams was summarized, the influence of Al2O3, SiC, fly ash and other hard ceramic particles as well as the Al2O3 short fiber and carbon fiber on the properties of aluminium matrix composite foam was overviewed. The addition of hard ceramic particles such as Al2O3, SiC and carbon fiber is beneficial for improving the compression strength of the composite foams and solving the problems which are the difficulty to control the foaming process, variant bubble size, uneven bubble distribution, and poor stability of the material. Moreover, the right amount reinforced phase can be added to improve the compressive strength of aluminium foam matrix, energy absorption efficiency and damping properties, but the excessive enhancement phase can lead to brittleness to the aluminium foam matrix, resulting in the decrease of the composite performance.