Microstructure and interfacial characteristics of 3D-C/ Cu composites prepared by molten infiltration at low pressure

3D-C/Cu composites were synthesized successfully by molten infiltration of Cu-6Ti alloy into fine weave pierced fabrics of carbon fiber, and microstructure and interfacial characteristics of the composites were analyzed by X-ray diffraction (XRD) , optical microscope ( OM ), scanning electron microscope (SEM) and energy dispersive spectrometry (EDS). The results indicate that the wettability of copper matrix with carbon fiber can be obviously improved with proper Ti addition, which is beneficial for the molten infiltration effects. Molten alloy is infiltrated into carbon fiber fabric due to pressure difference during molten infiltration. Desirable infiltration effects can be observed by microstructural analysis. The interface of composites is formed by diffraction reaction of Ti with C, and its thickness is increased with advancing in diffraction. Finally, fifty-four minutes later, the reactive diffusion is completed.