通过对粉煤灰空心微珠化学镀镍钴合金研究了其电磁特性.微珠表面金属化通过三步化学镀完成.扫描电镜和能谱分析表明镍钴合金被均匀地施镀到了微珠表面.微波吸收性测试能通过把金属化的微珠掺入石蜡完成.由于镍钴合金的作用,镀后微珠具备了高的介电特性.一系列实验表明化学镀镍钴合金的中空微珠是一类微波吸收剂.随着化学镀镍钴合金的中空微珠涂料厚度的增加,微波吸收峰向低频迁移.
Electroless Ni-Co alloy thin films on fly-ash hollow microspheres was employed to study it electromagnetic properties.Metal plating was carried out in a three step electroless plating process. The results of SEM and EDS analysis indicate that Ni-Co could be plated on the surface of cenospheres comparatively homogenous. Microwave absorbing properties were determined in the olefin composites containing the metal-coated microspheres. Due to the conductive behavior of Ni-Co alloy thin films, high dielectric can be obtained in microwave frequencies. A number of experiments show that electroless Ni-Co alloy thin films on fly-ash hollow microspheres is a kind of microwave absorbent . With the increasing of the electroless Ni-Co alloy thin films on fly-ash hollow microspheres coat thickness, the absorbing peak value of the composite shifts to lower frequency.
参考文献
| [1] | Emerson W H .[J].IEEE Transactions on antennas and propagation,1973,4:21. |
| [2] | Kim S S;Kim E T .[J].Journal of Magnetism and Magnetic Materials,2004,271:39-45. |
| [3] | Shukla S.;Akesson J.;Oder R.;Carter R.;Rahman Z.;Seal S. .Study of mechanism of electroless copper coating of fly-ash cenosphere particles[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2001(1/2):35-50. |
| [4] | 陈小华;颜永红 等.[J].微细加工技术,1999,2:17-22. |
| [5] | 徐坚,熊惟皓,曾爱香,王采芳.合金包覆空心微珠粉体吸波材料的制备[J].功能材料,2004(z1):848-851,856. |
| [6] | 葛凯勇,王群,毛倩瑾,于彩霞,周美玲.空心微珠表面改性及其吸波特性[J].功能材料与器件学报,2003(01):67-70. |
| [7] | 毛倩瑾,于彩霞,王群,张丰,葛凯勇,周美玲.空心微珠表面金属化及其电磁防护性能研究[J].北京工业大学学报,2003(01):108-111. |
| [8] | Xu Hongfei;Xu Lina;Gu Ning .A new electromagnetic functional material composed of metallic hollow micro-spheres[J].Journal of Southeast University,2003(1):8-11. |
| [9] | 曾爱香;熊惟浩.[J].电镀与化学镀,2004(35):864-867. |
| [10] | 王宇,张骁勇,毛丽,曹志壮.空心玻璃微珠化学镀银的研究[J].材料科学与工程学报,2004(05):753-756. |
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