铁氧体

By this simple method, trinary oxides such as several kinds of ferrites were prepared. XRD and SEM were employed to characterize the phase and morphology of the final product. Hysteresis loops of the as-prepared ferrites were given and cobalt ferrite had the biggest magnetism and coercive force.

运用溶液燃烧法一步合成了多种铁氧体等三元氧化物，分别用X-射线粉末衍射、扫描电镜对其相态和形貌进行初步的表征；磁性能研究显示钴铁氧体具有最大的磁能积和矫顽力。

It was shown that, when without magnetic field or MFD lower than 2Tesla, spheric cobalt ferrite nanoparticles was obtained, and when MFD was equal or above 4Tesla, claviform cobalt ferrite nanoparticles appeared.

在强磁场下采用共沉淀-相转化法制备出了纳米级的钴铁氧体颗粒，通过SEM，XRD和VSM等分析手段，考察了磁感应强度对纳米钴铁氧体形貌及性能的影响规律。

Temperature field in the sinter process of magnetic ferrite was numerically simulated by using finite element method. Temperature distribution of workpiece during the sinter process is concluded, where it indicates different sinter stage and different diathermanous mode. Also critical temperature is gained, it differentiates between low temperature stage mainly with convection and high temperature stage mainly with radiation.

利用有限元分析法对永磁铁氧体材料烧结过程温度场进行了数值模拟研究，得出铁氧体磁瓦在烧结过程的不同传热方式下、不同烧结阶段的温度分布规律，得出了烧结过程对流传热为主的低温阶段与辐射传热为主的高温阶段的分界温度。

The adopted preparation method comprises the following steps: paper fibre or porous organism is used as a hard template; CoFeFe-LDH is synthesized in the surface and holes of the hard template and roasted to prepare the magnetic cobalt iron ferrite; as the function for fixing the houghite position is produced by the obstruction and adsorption of the hard template, the occurrence of the sintering phenomenon is greatly avoided, thereby preparing the magnetic cobalt iron ferrite with a consistent shape and even granularity.

所采用的制备方法是以纸纤维或多空有机物为硬模板、在硬模板表面及孔内合成Co 2 Fe 2 Fe 3 -LDH，再经焙烧得到磁性钴铁铁氧体，由于硬模板的阻隔和吸附而产生的水滑石位置固定作用，极大地避免了烧结现象发生；从而得到形状一致、粒度均匀的钴铁铁氧体。

In this ***,nano-particles of NiCuZn ferrites powders were prepared with nickel nitrate,zinc sulfate,copper sulfate and ferrous sulfate as starting materials and ammonium oxalate as the precipitator by employing co-precipitation technique using oxalate precursors.Excellent composition uniformity NiCuZn ferrite powder can be obtained after drying and calcination.Toroidal samples were obtained after being formed and sintered.

本文以硫酸镍、硫酸铜、硫酸锌、硫酸亚铁和草酸铵为原料，应用化学共沉淀法制得分布均匀的先驱粉，经烘干、煅烧制成成分均匀性极佳的NiCuZn铁氧体粉末，再经成形和烧结等工艺，最后制得环形NiCuZn铁氧体材料。

Shrinked aldehyde drying glue and soldering tin is two kinds of adhesive materials used for adhibiting and fixing the pieces of ferrite on the inner wall of the shell of microwave ferrite devices.

易容平（华东电子工程研究所，安徽合肥 230031）摘要：缩醛烘干胶和焊锡是微波铁氧体器件中常用的两种粘接材料，用于铁氧体片在器件壳体内壁既定位置上的固定。

These systematic studies can contribute to the study of the applications of NiZn ferrite.Meanwhile,the research methods employed in this thesis can also be applied to other kind of similar ferrites and even other ceramics.

以上系统的工作，对NiZn铁氧体的实际应用具有一定的参考和借鉴价值，同时本论文中的研究方法对其它尖晶石铁氧体的研究也具有一定的指导意义。

The influence of Ta2O5 addition on the microstructure and magnetic properties of MnZn ferrites was investigated.

采用氧化物陶瓷工艺制备MnZn功率铁氧体，研究了不同Ta2O5含量对MnZn功率铁氧体微观结构和磁性能的影响。

In this paper, the effect of Cu content on the permeability and power loss Pcv of NiCuZn (μ i=1200) ferrites was investigated.

研究了Cu含量对NiCuZn(μi=1200)铁氧体材料磁导率和功耗Pcv的影响，并采用高纯度的原材料，严格控制主配方和生产工艺，制备出了高性能的NiCuZn铁氧体材料。

MGC Brand Scries Strontium Ferrite Magnetic Powders have been designed to produce all geade of hard ferrites.

MGC牌锶铁氧体系列磁粉可用来生产所有等级的铁氧体磁体。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。