【摘要】 通过等通道挤压(ECAP)制备了Al- C复合材料,并使用HRTEM、EDS和XRD研究了Al- C界面。结果表明,界面上并未出现不稳定的Al4 C3,界面结合较好。Al-C界面分两类:一类为由非晶C和Al形成的界面;另一类为由石墨C和Al形成的界面。在石墨C和Al形成的界面处由于界面应力的作用晶格出现部分扭曲,此处的石墨C有向非晶C转变的趋势。更多还原

【Abstract】 Al-3at%C composites were prepared by equal-channel angular pressing （ECAP）. The microstructure and interface of the aluminum matrix composites were investigated by high resolution transmission electron microscopy （HRTEM）, energy dispersive spectrometry （EDS） and X-ray diffraction （XRD）. Two kinds of interfaces have been found in the composites, one is Al/C （amorphous）, the other is Al/C （graphite）. At the Al/C （graphite） interface, the lattice of both Al and graphite distorts partially because of interfacial stress, and the graphite has a trend to become amorphous carbon. Al₄C₃ is not found at the interface Al/C.更多还原