Preparation of Electromagnetic wave absorber Barium Ferrites for Electromagnetic Environment by liquid State Reaction

在目前的研究中，我们用玻璃陶瓷方法研究了Y型Ba-六氟醚的合成方法，作为一种电磁波吸收器。结果是summarized as follows。具有0.1 MO组成的玻璃[xB_2 O_3·yBaO·（1-x-y）Fe_2 O_3]已准备并从玻璃矩阵中检测Y型Ba-hexaferOracle的预处理过程。Y型Ba-六氟醚颗粒是由820℃和1100℃之间加热玻璃的预先确定的。基于这些结果，Y型Ba六氟rite的六角平台，具有公平的统一尺寸，作为通过提取一个肮脏的HCl解决方案从玻璃矩阵中提取的精确度。Y型Ba-六氟crite的低温度形成在M型Ba-ferrite和液体阶段之间产生反应。Y型Ba-hexaferrite （Ba_2Zn_&lt;2-x&gt; Co_xFe_O_）的替代固态解决<12><22>方案在所有组合范围内。这些Y型Ba-Hexaferrite固体解决方案在8 - 9 GHz的频率范围内展示了电磁吸收光谱。

In the present study, we tried the synthesis of Y-type Ba-hexaferrite expected as an electromagnetic wave absorber by the glass ceramic method. The results are summarized as follows.The glasses with composition of 0.1MO[xB_2O_3・yBaO・(1-x-y)Fe_2O_3] were prepared and the precipitation process of Y-type Ba-hexaferrite from the glass matrix was investigated. Y-type Ba-hexaferrite particles were precipitated by heating the glass at temperatures between 820℃ and 1100℃. Based on these results, hexagonal platelets of Y-type Ba-hexaferrite with fairly uniform dimension were obtained as precipitates from the glass matrix by leaching with a dilute HCl solution. The low-temperature formation of Y-type Ba-hexafcrrite was due to a reaction between M-type Ba-ferrite and liquid phase. Substitutional solid solutions of Y-type Ba-hexaferrite (Ba_2Zn_<2-x>Co_xFe_<12>O_<22>) were obtained in all composition range. These Y-type Ba-hexaferrite solid solutions showed electromagnetic absorption spectra at frequency range of 8 to 9 GHz.