同时具有高红外辐射率及高电导率的多孔镍镀层

Porous nickel coating with both high infrared radiation rate and high conductivity

通过氢气泡模板法制备出了同时具备高电导率和高红外辐射率的多孔镍镀层,满足其在太空中散热以及电磁屏蔽的需要。分析研究了不同沉积时间、氯化铵和氯化镍浓度对多孔镍层孔径和红外发射率的影响。研究结果表明,随着孔洞投影面积比的增加,多孔镍层的红外发射率增加,通过工艺参数的优化,在不影响Ni镀层导电性能的前提下,制备出红外发射率为0.79的多孔镀镍膜层。

Porous nickel coating with both high conductivity and high infrared radiation was prepared by the hy-drogen bubble template method 9 which can meet the needs of heat radiation and electromagnetic shielding in space. The effects of different deposition time,concentration of ammonium chloride and nickel chloride on the pore size and infrared emissivity of porous nickel layer were studied. The results show that with the increase of the ratio of hole projection area,the infrared emissivity of porous nickel layer increased. By optimizing the process parameters, the porous nickel film with infrared emissivity of 0.79 was prepared without affecting the conductive properties of Ni coatings.