电化学方法制备纤维增强金属基复合材料的初步研究

Investigated of Fiber-reinforced Metallic Matrix Composites Prepared by Electrochemical Method

提出了利用电化学方法在室温下制备纤维增强金属基复合材料的新技术.详细阐述了制备工艺过程,并通过SEM观察了复合材料的断口形貌及显微结构.实验证实电化学浸渗技术具有在室温下快速制备纤维增强金属基复合材料的优点,导电或不导电纤维可用来作为增强剂.导电纤维可直接用于电化学浸渗,而不导电纤维在使用之前要进行表面金属化处理.初步实验结果表明,在5.5V和8h的沉积条件下可获得致密的纤维/铜基复合材料.

A novel technique of preparing fiberreinforced metallic matrix composites by electrochemical method was proposed. The processing procedures were described in details, and the fracture surface morphology and microstructure of the present composites have been observed by SEM. It is demonstrated that the electrochemical infiltration technique has obvious merits over the conventional processing techniques in the preparation of fiberreinforced metallic matrix composite. Either conductive or nonconductive fibers may be used as reinforcing agents. Conductive fibers can be electrochemically infiltrated without additional treatment, while nonconductive fibers need to be surfacemetallized before use. Preliminary experiments have shown that dense fiber/copper matrix composites are obtainable at 5.5 V for 8 h for the systems studied.