DIELECTRIC PROPERTIES OF SiC(N)/LAS NANO-COMPOSITE
-
摘要: 采用LAS玻璃粉末和激光诱导法制备的纳米SiC(N)粉体,通过热压烧结法制备了SiC(N)/LAS纳米陶瓷复合材料,研究了该复合材料在8.2~12.4GHz频率范围内的微波介电特性。结果表明,SiC(N)/LAS的介电常数主要受纳米SiC(N)粉体含量的控制,此外还与烧结温度有关。随着烧结温度的提高,复合材料介电常数和介电损耗均随之增大。SiC(N)/LAS对电磁波的损耗作用明显优于同体积分数的纳米SiC(N)与石蜡混合体,这与烧结过程中形成的碳界面有关。
-
关键词:
- 纳米SiC(N) /
- LAS玻璃陶瓷 /
- SiC(N)/LAS复合材料 /
- 介电常数
Abstract: The nano SiC(N) powder was synthesized by laser-induced gas-phase reaction. SiC(N)/LAS nano-composite was prepared from LAS glass powder and as-formed nano SiC(N) powder by the hot-pressing method. The microwave dielectric properties of the nano-composite in a frequency range of 8.2~12.4 GHz were studied. The results show that the permittivity of the nano-composite is related closely to the contents of nano SiC(N) and influenced fairly by sintering temperatures. Compared with the mixture of nano SiC(N) and paraffin, the sintering process improved the nano-composite's dissipation to electromagnetic wave. This amelioration is ascribed to the formation of carbon interface between nano SiC(N) and LAS matrix.-
Key words:
- nano SiC(N) /
- LAS glass-ceramic /
- SiC(N)/LAS nano-composite /
- permittivity
-
点击查看大图
计量
- 文章访问数: 1537
- PDF下载量: 950
- 被引次数: 0
下载:
