CAJ | 학술논문

水热法合成片状Co微晶材料，其在2~18 GHz频段具有高介电常数和大的介电损耗.将片状Co微晶与 W型锶铁氧体构成阻抗渐变的双层吸波涂层，对在2~18 GHz频段其反射损耗随着各层厚度的变化关系进行表征.结果表明，双层吸波涂层具有涂层薄、吸收强和频带宽特性.如：当钴涂层和 W型锶铁氧体涂层的厚度分别为0.8、1.2 mm 时，最大反射损耗达到-50 dB；反射损耗小于-8 dB 时的频带为8.64~12.08 GHz.
수열법합성편상Co미정재료，기재2~18 GHz빈단구유고개전상수화대적개전손모.장편상Co미정여 W형송철양체구성조항점변적쌍층흡파도층，대재2~18 GHz빈단기반사손모수착각층후도적변화관계진행표정.결과표명，쌍층흡파도층구유도층박、흡수강화빈대관특성.여：당고도층화 W형송철양체도층적후도분별위0.8、1.2 mm 시，최대반사손모체도-50 dB；반사손모소우-8 dB 시적빈대위8.64~12.08 GHz.
Flake-shaped cobalt microcrystals were prepared by hydrothermal method,the high permittivity and high dielectric loss were observed in cobalt microcrystals embedded in the wax composite in 2-18 GHz range.The microwave absorption properties of double-layer microwave absorber based on W-type strontium ferrite and flake-shaped cobalt microcrystals were characterized in 2-18 GHz range.The results showed that double-layer microwave absorber could satisfy the requirement of thin coating,strong microwave absorption and broad bandwidth,for example,when the thickness of Co coating and W-type strontium ferrite coating were 0.8 mm and 1.2 mm respectively,the maximum reflection loss could reach -50 dB,and the bandwidth less than -8 dB covers the 8.64-12.08 GHz range.