多孔Cu/Ni复合材料的电沉积法制备及其性能  

Electrodeposition Processing of Porous Cu/Ni Composites and Their Performance

作　　者：杨碧莲 李星吾 阮莹[1] 魏炳波[1] Yang Bilian;Li Xingwu;Ruan Ying;Wei Bingbo(Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学

出　　处：《稀有金属材料与工程》2019年第10期3215-3220,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(U1806219,U1660108,51327901);中央高校基本科研业务费(3102018jgc009)

摘　　要：采用电沉积法制备了孔隙分布均匀且沉积层为2~5层的多孔Cu/Ni复合材料。研究了不同工艺参数下多孔Cu/Ni复合材料的宏观形貌、微观结构和力学性能。多孔Cu/Ni复合材料的微观结构及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,抗压缩强度由246kPa提升至1736 kPa,杨氏模量由3.94 MPa增大到19.02 MPa,单位体积吸能能力由59.03 Pa·m提升至824.51 Pa·m。Porous Cu/Ni composites with uniform pore distribution were prepared by electrodeposion and its coating layer number was from 2 to 5.The effects of processing parameters on both microstructure and mechanical properties were studied.Results show that the microstructure morphology and characteristic parameters of porous Cu/Ni composites are strongly dependent on the coating layer number.As the coating layer number increases,the pore diameter and porosity decrease while the specific surface area and apparent density increase.The solid solution forms at the Cu and Ni interface due to the atomic diffusion.The mechanical properties of the composites are remarkably enhanced with the increase of coating layer number.As the coating layer number increases to 5 the compressive strength increases from 246 kPa to 1736 kPa and Young’s modulus 3.94 MPa to 19.02 MPa.Moreover,the energy absorption of per unit volume increases from 59.03 Pa·m to 824.51 Pa·m.

关 键 词：多孔复合材料 电沉积 力学性能 吸能能力 

分 类 号：TF125.6[冶金工程—粉末冶金] TB331[冶金工程—冶金物理化学]