Abstract: The nickel deposition under super-gravity field was carried out and the effect of super-gravity field on current efficiency, cell voltage and specific energy were studied. The nickel foil prepared was characterized by SEM and XRD, and the effect of super-gravity field on mechanical properties of nickel foil was also investigated. The results indicated that the current efficiency and growth rate of nickel deposition were affected markedly by super-gravity field. With the increase of gravity coefficient, G, and current density, the crystal grains diminished. The tensile strength of nickel foil increased from 933 MPa under normal gravity condition to 1190 MPa under G value of 443, and the hardness increased also from 224 to 375 Hv. Under G value of 111, with the increase of current density from 0.1 to 0.4 A/cm2, both tensile strength and hardness of nickel foil increased from 1054 MPa and 285 Hv to 1121 MPa and 331 Hv, respectively.

Key words: super-gravity, electrodeposition, nickel foil, mechanical properties

摘要： 在超重力条件下电沉积镍箔，考察了超重力对镍箔沉积的电流效率、槽电压和单位能量消耗的影响，并对所制镍箔的表面形貌和晶体结构及机械性能进行了表征. 结果表明，随着重力系数G和沉积电流密度的增加，镍箔晶粒有细化的趋势. 所得镍箔抗拉强度由常重力(G=1)时的933 MPa增加到G=443时的1190 MPa，硬度则由224 Hv增加到375 Hv. 超重力条件下(G=111)，随着沉积电流密度由0.1 A/cm2增加至0.4 A/cm2，镍箔的抗拉强度和硬度分别由1054 MPa和285 Hv增加为1121 MPa和331 Hv.

关键词: 超重力, 电沉积, 镍箔, 机械性能