以多孔碳化硅陶瓷为基体,采用高分子凝胶法制备了包覆镍铁氧体涂层的多孔陶瓷复合材料.复合材料的结构、包覆涂层的表面形貌和电磁性能分别采用X射线衍射仪(XRD)、扫描电镜(SEM)和HP8510网络分析仪进行研究.结果表明,当锻烧温度为600℃时,在多孔陶瓷表面有立方晶系尖晶石结构的镍铁氧体晶相生成.随着包覆层数的增加,多孔陶瓷表面的镍铁氧体涂层的致密度和均匀性逐渐增强.与多孔陶瓷基体相比,包覆镍铁氧体涂层的多孔陶瓷的介电损耗角正切值tanδ,减小,而磁损耗角正切值tanδμ增大,表现出较好的磁损耗特性,tanδμ值最大可达0.45.包覆镍铁氧体涂层的多孔陶瓷在x波段的tanδμ值随频率的升高呈减小趋势.
参考文献
| [1] | 肖群芳,宁晓山,周和平,等.泡沫凝胶法制取陶瓷的气孔率影响因素研究[J].稀有金属材料与工程,2006,35(6):982-985.Xiao Qunfang,Ning Xiaoshan,Zhou Heping,et al.Study on porosity of stirring-formed by gelcasting foams[J].Rare Metal Materials and Engineering,2006,35(6):982-985. |
| [2] | 罗民华.多孔陶瓷实用技术[M].北京:中国建材工业出版社,2006:11. |
| [3] | 朱新文,江东亮,谭寿洪.碳化硅网眼多孔陶瓷的制备[J].无机材料学报,2000,15(6):1055-1060.Zhu Xinwen,Jiang Dongliang,Tan Shouhong.Preparation of silicon carbide reticulated ceramics[J].Journal of Inorganic Materials,2000,15(6):1055-1060. |
| [4] | 宫清,曹小明,方正,等.三维连通网络陶瓷的电磁特性[J].材料研究学报,2002,16(4):349-353.Gong Qing,Cao Xiaoming,Fang Zheng,et al.Dielectric and magnetic properties of 3D net ceramic[J].Journal of Materials Research,2002,16(4):349-353. |
| [5] | 朱新文,江东亮,谭寿洪.碳化硅网眼多孔陶瓷的微波吸收特性[J].无机材料学报,2002,17(6):1152-1156.Zhu Xinwen,Jiang Dongliang,Tan Shouhong.Mierowave absorbing property of SiC reticulated porous ceramics[J].Journal of Inorganic Materials,2002,17(6):1152-1156. |
| [6] | George Mathew,John Asha Mary,Nair Swapna S,et al.Finite size effects on the structural and magnetic properties of sol-gel synthesized NiFe2O4 powders[J].Magn Magn Mater,2006,302:190-195. |
| [7] | 赵东林,罗发,周万城,等.纳米SiC和SiC(N)粉体的微波介电特性及其与微波的作用机理[J].西北工业大学学报,2002,20(2):167-171.Zhao Donglin,Luo Fa,Zhou Wancheng,et al.Microwave permittivity of nano SiC(N)composite powder and nano SiC powder and interaction mechanism with microwave[J].Journal of Northwestern Polytechnical University,2002,20(2):167-171. |
| [8] | Zhang Hongtao,Zhang Jinsong,Zhang Hongyan.Computation of radar absorbing silicon carbide foams and their silica matrix composites[J].Computational Materials Science,2007,38(4):857-864. |
| [9] | Zhang Hongtao,Zhang Jinsong,Zhang Hongyan Electromagnetic properties of silicon carbide foams and their composites with silicon dioxide as matrix in X-band[J].Composites Part A,2007,38(2):602-608. |
| [10] | Cheng Y,Zheng Y H,Wang Y S,et al.Synthesis and magnetic properties of nickel ferrite nano-octahedra[J].Journal of Solid State Chemistry,2005,178(7):2394-2397. |
| [11] | 焦桓,周万成,罗发.Si/C/N晶须的微波介电性能[J].复合材料学报,2003,20(4):34-38.Jiao Huan,Zhou Wancheng,Luo Fa.Microwave dielectric property of Si/C/N nano whisker[J].Acta Materiae Compositae Sinica,2003,20(4):34-38. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%