Development of Composite Electromagnetic Wave Absorbers Using Dielectric Materials Coated by Magnetic materials

磁性材料涂层介电材料复合电磁波吸收体的研制

• 批准号: 16560282
• 负责人: YOSHIKADO Shinzo
• 金额: $ 2.3万
• 依托单位: Doshisha University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560282/
• 关键词: Ni-Zn-ferrite; SiO_2; composites materials; complex permeability; surface coating; spray method; mechanical milling; complex permittivity

We developed a metal-backed single layered composite electromagnetic wave absorber made of composite materials (Spinel-type Ni-Zn ferrite, SiO_2). The Lichtenecker logarithm mixed raw indicated a different value by the simulation that used the isolation model. When the amount of the mixture of SiO_2 from the SiO_2 isolated model was 70mol%, it was shown to obtain it also on the side fixed astringency of the high frequency side.It was tried to make the sample that the SiO_2 particle is isolated in the complex of Ni-Zn ferrite. We evaluated an electromagnetic characteristics and the absorption characteristic of the samples. It found not to be able to achieve making the sample that the SiO_2 particle is isolated in the composite by using Ni-Zn ferrite ultrafine particles. Moreover, whether the SiO_2 particle can be covered by Ni-Zn ferrite by using the spray method and a mechanical milling is examined. It found that electromagnetic characteristics approaches the value calculated from the isolation model in each sample. It found to be able to make the absorber material that shows excellent absorption characteristics even by the low frequency and the high frequency without the complex permittivity greatly decreasing in the complex that makes it by obtaining the coating with an excellent Ni-Zn ferrite in the sample milled by using mechanical milling in a short time.

我们开发了由复合材料（尖晶石型Ni-Zn铁氧体，SIO_2）制成的金属衬托的单层复合电磁波吸收器。 Lichtenecker对数混合原始原始方法通过使用隔离模型的模拟表示不同的值。当SIO_2隔离模型的SIO_2的混合物量为70mol％时，也证明它也可以在高频侧的固定涩味上获得。 Ni-Zn铁氧体的复合物。我们评估了样品的电磁特性和吸收特性。发现无法通过使用NI-ZN铁素体超细颗粒在复合材料中分离出SIO_2粒子的样品。此外，使用喷雾法检查了NI-ZN铁氧体是否可以覆盖SIO_2粒子并检查机械铣削。它发现电磁特性接近从每个样品中的隔离模型中计算得出的值。它发现能够使吸收材料即使通过低频率和高频也没有复杂的介电常数在复合物中大大降低，从而使吸收特征出现了出色的吸收特征通过在短时间内使用机械铣削进行铣削。

项目成果

Evaluation of Characteristics of Composite Electromagnetic Wave Absorbers

复合电磁波吸收体的特性评价

• 发表时间: 2006
• 期刊: Key Engineering Materials (印刷中)
• 作者: K.Sakai;K.Hiraki;H.Kusunoki;T.Kondo;S.Yoshikado
• 通讯作者: S.Yoshikado

Evaluation of Characteristics of Electromagnetic Wave Absorbers of Composites Fabricated by Mechanical Milling

机械铣削复合材料电磁波吸收体特性评价

• 发表时间: 2005
• 期刊: Key Engineering Materials Vol.301
• 作者: K.Hiraki;H.Kusunoki;T.Kondo;K.Takada;M.Nezaki;S.Yoshikado
• 通讯作者: S.Yoshikado

SiO_2粒子が孤立したフェライト・SiO_2複合電磁波吸収体の特性評価

孤立SiO_2颗粒铁氧体/SiO_2复合电磁波吸收体特性评价

• 发表时间: 2004
• 期刊: 電気学会論文誌 124-A
• 作者: 楠祐樹;平木聖大;近藤隆俊;高田和司;吉門進三
• 通讯作者: 吉門進三

Characteristics of the Electromagnetic Wave Absorbers of Composites Made of Ni-Zn ferrite and Isolated SiO_2 Particles

Ni-Zn铁氧体与孤立SiO_2颗粒复合材料电磁波吸收体的特性

• 发表时间: 2004
• 期刊: Key Engineering Materials 269
• 作者: H.Kusunoki;T.Kondo;K.Hiraki;K.Takada;S.Yoshikado
• 通讯作者: S.Yoshikado

『電波吸収体の最適材料・設計と応用事例』 技術全集〜最適設計・作製・測定評価手法とその応用事例

《电波吸收体的最佳材料、设计及应用实例》技术全集-最佳设计、制造、测量和评估方法及其应用实例

• 发表时间: 2006
• 作者: K.Sakai;K.Hiraki;H.Kusunoki;T.Kondo;S.Yoshikado;吉門進三 他(共同執筆)
• 通讯作者: 吉門進三 他(共同執筆)