石墨表面化学镀Ni-P非晶的制备与电磁性能  

Preparation and electromagnetic properties of amorphous Ni-P coated graphite by electroless plating

作　　者：刘世杰[1] 丘泰[1] 黄东[1] 冯永宝[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《电子元件与材料》2010年第3期28-30,共3页Electronic Components And Materials

基　　金：国防科工委民口配套项目

摘　　要：为了提高石墨吸收剂的阻抗匹配能力,改善其吸波性能,采用化学镀法对石墨表面进行镀Ni-P改性。研究了镀层的相组成、形貌、成分和样品的电磁吸波性能。结果表明:石墨表面包覆了一层非晶态Ni-P镀层;与原始石墨相比,在2GHz时,镀Ni-P非晶石墨复合材料的ε′和ε″分别明显降低至6.6和0.4,μ′和μ″分别略微增加至1.08和0.26,其吸收频带得到展宽,在14GHz的最小反射率为–7.0dB,反射率小于–5dB的吸收频带宽达4GHz。In order to increase the properties of impedance matching and microwave absorption of graphite absorbent,electroless plating was used to modify the surface of graphite by coating Ni-P on them.The phase composition,morphology,composition of the coating and electromagnetic and microwave absorption properties of obtained samples were studied.The results show that a layer of amorphous Ni-P is coated onto the surface of graphite;compared with primitive graphite,at 2 GHz,the real permittivity ε＇ and imaginary permittivity ε″ of the Ni-P coated graphite composites are notably reduced to 6.6 and 0.4,respectively.The real permeability μ＇ and imaginary permeability μ″ of the Ni-P coated graphite composites are slightly improved to 1.08 and 0.26,respectively.Their absorption bandwidth is widened.The minimum reflectivity is –7.0 dB at 14 GHz,and the absorption bandwidth is 4 GHz under –5 dB of reflectivity.

关 键 词：石墨 化学镀NI-P 吸波材料 吸收剂 

分 类 号：TQ153.1[化学工程—电化学工业]