多孔Cu/Ni复合材料的电沉积法制备及其性能研究

Electrodeposition Processing and Performance of Porous Cu/Ni Composites

摘要:

采用电沉积方法制备了孔隙分布均匀且沉积层从 2到 5 层的多孔Cu/Ni复合材料。研究了不同工艺参数对多孔Cu/Ni复合材料的微观结构形貌和力学性能。多孔Cu/Ni复合材料的微观结构形貌与表征参数与沉积层数密切相关,其平均孔径、孔隙率随沉积层数增加而减小,其比表面积、表观密度随沉积层数增加而增大,多孔Cu/Ni复合材料的铜层与镍层之间由于原子扩散形成固溶体合金层。材料的力学性能随沉积层数增加而提高,压缩强度可达 17.36 MPa,杨氏模量增加 7.9倍,单位体积吸能本领提高13.9倍。

Abstract:

Porous Cu/Ni composites with uniform pore distribution were prepared by electrodeposion method and its coating layer number is from 2 to 5. The effects of processing parameters on both microstructure and mechanical properties were studied. The microstructure morphology and characteristic parameters of porous Cu/Ni composites were strongly dependent on coating layer number. As the coating layer number increased, the pore diameter and porosity decreased while the specific surface area and apparent density increased. The solid solution formed at the Cu and Ni layer interface due to the atomic diffusion. The mechanical properties of the composites were remarkably enhanced with the increase of coating layer number. The compressive strength reached 17.36 MPa and Young"s modulus increased by 7.9 times. Moreover, the energy absorption of per unit volume rose up by 13.9 times as the coating layer number increased to 5.