Study on the microwave absorbing properties of surface modified SiO2 composites

被引：0

作者：

Li, Li-Guang ^{[1
]}

Tan, Ye-Fa ^{[1
]}

Cai, Wen-Li ^{[2
]}

Chu, Wei-Jun ^{[1
]}

Li, Hua-Bing ^{[1
]}

机构：

[1] Engineering Institute of Corps of Engineering, PLA University of Science and Technology, Nanjing 210007, China

[2] Engineering Design and Research Institute of Guangzhou Military Area, Guangzhou 501515, China

来源：

Binggong Xuebao/Acta Armamentarii | 2009年 / 30卷 / 06期

关键词：

Surface treatment - Nickel coatings - Powder coatings - Reflection;

D O I：

暂无

中图分类号：

TQ63 [涂料工业];

学科分类号：

摘要：

The technology of liquid phase hydrogen reduction under high pressure was employed to modify the SiO2 powder in order to prepare light mass and wide frequency band absorbing coatings. The surface modified SiO2 coatings were prepared. The SEM and XRD analysis results show that the nickel particles on the surface of SiO2 particles were homogeneously crystallized and the cladding was complete gradually with the increase of nickel plating. The absorbing properties of the surface modified SiO2 coatings at the frequency ranges from 8 to 18 GHz were measured. The influences of mass fractions of nickel, particle content and thickness on the absorbing properties of the SiO2 coatings were studied. The researched results show that the surface modified SiO2 coating with 75% nickel plating, 65% particles and 2 mm in thickness exhibits better microwave absorbing property; the minimum reflectivity of the absorbing coating is -14.6 dB at the frequency of 17.15 GHz and the bandwidth is 7 GHz when the reflectivity is less than -10 dB.

引用

页码：753 / 758