The dispersity of carbon nanotubes in CNT/6061Al composites was tailored by varying the pre-dispersion state of CNTs on Al spherical powders, which was controlled by the high-shear pre-dispersion process. The difference in the dispersity and structural integrity of carbon nanotubes and the degree of interfacial reaction in the composites were analyzed by Raman spectroscopy mapping. The results show that Raman spectroscopy mapping is sensitive and can be used as a mesoscopic tool to evaluation of the overall status of CNTs in the composite. It also show that the slight adjust of the pre-dispersion state of the CNTs can achieve an improvement of tensile strength up to about 50 MPa. Specifically, under appropriate pre-mixing speed which makes CNTs partially embedded in the surface of Al powders, uniform dispersion of CNTs and good interface bonding can be simultaneously achieved, resulting in higher strengthening effect and good ductility.

通过改变CNT在Al球形粉末上的预分散状态，可以调整碳纳米管在CNT / 6061Al复合材料中的分散度，该状态由高剪切预分散过程控制。通过拉曼光谱图分析了碳纳米管的分散性和结构完整性以及界面反应程度的差异。结果表明，拉曼光谱图很灵敏，可以用作介观工具来评估复合材料中CNT的整体状态。还表明，对CNT的预分散状态的轻微调节可以实现直至约50MPa的拉伸强度的改善。具体而言，在适当的预混合速度下，使碳纳米管部分嵌入铝粉的表面，