为了提高吸波剂对电磁波的吸收性能,采用溶胶-凝胶法制备了表面包覆有一定厚度的炭黑薄膜的钛酸钡复合粒子.并利用XRD和TEM方法对其形貌结构进行了分析;同时研究了复合粒子的导电性能、电磁参数以及对电磁波的吸收性能.结果表明:钛酸钡颗粒的直径在50～70 nm之间,包覆层厚度为10～20 nm.包覆工艺显著改善了材料的导电性能并提高了介电常数,而且随着复合粒子在吸波材料基体中的含量不同,对电磁波的吸收性能也有着不同的影响:当吸收材料中复合粒子含量达到或超过20wt%时,复合粒子明显改善了吸收材料对电磁波的吸收性能.
参考文献
| [1] | Cohen R E.Origin of ferroelectricity in perovskite oxides.Nature,1992,358:136-138. |
| [2] | Savakus H,Klicker K,Newnham R.Journal of the American Ceramic Society,1995,78:2945-2955. |
| [3] | Kuo D H,Wang C H,Tsai W P.Ceramics International,2006,32:1-5. |
| [4] | Kozuka H,Higuchi A.Journal of the American Ceramic Society,2003,86:33-38. |
| [5] | Frey M H,Payne D A.Chemistry of Materials,1995,7:123-129. |
| [6] | 郭慧芬,张兴堂,刘兵,等.物理化学学报,2004,20(2):164-168. |
| [7] | Nakamura T,Sakudo T,Ishibashi Y,et al.Ferroelectricity Involved in Structural Phase Transition,Shokabo,Tokyo,1998.47-170. |
| [8] | 范仰才,蒋力立,唐芯桂,等(FAN Yang-Cai,et al).无机材料学报(Journal of Inorgannic Materials),2000,15(5):797-801. |
| [9] | Jeon J H,Hahn Y D,Kim H D.Journal of the European Ceramic Society,2001,21:1653-1656. |
| [10] | 黄集权,杜丕一,翁文剑(HANG Ji-Quan,et al).无机材料学报(Journal of Inorganic Materials),2005,20(5):1106-1112. |
| [11] | 赵彦波,刘顺华,管洪涛(ZHAO Yan-Bo,et al).硅酸盐学报(Journal of the Chinese Ceramic Society),2006,34(2):225-228. |
| [12] | 赵东林,沈曾民(ZHAO Dong-Lin,et al).无机材料学报(Journal of Inorganic Materials),2005,20 (3):608-612. |
| [13] | Kao Chen-Feng,Yang Chiao-Ling.Journal of the European Ceramic Society,1999,19:1365-1368. |
| [14] | Dishovsky N,Grigorova M.Materials Research Bulletin,2000,35 (3):403-409. |
| [15] | Motojima S,Hoshiya S,Hishikawa Y.Letters to the Edittor/Carbon,2003,41:2653-2689. |
| [16] | Chen J,Martin P H.Journal of the American Ceramic Society,1990,73:68-73. |
| [17] | Jonscher A K.Dielectric Relaxation in Solids London:Chelsea Dielectric press,London,1983.138. |
| [18] | 赵东林.耐高温雷达波吸收剂的制备及其性能研究.博士学位论文,西安:西北工业大学,1999. |
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