磁体

In addition,the dispersion relation and delay characteristics of the coupled mode in two different YIG films are studied by numerical analogue in the range of inclination angle from 5° to 20°.

本文研究了在倾斜静磁场作用下，双层YIG薄膜波导结构中静磁体波的传播特性，得到了其色散的特征方程，计算了磁场倾角从5°到20°范围内双层波导结构中静磁体波传播的色散关系和延迟特性。

Based on the calculation, the method to decrease the heat load is presented. The results of thermal fluid modeling for the magnet cryostat are also provided.

计算得到了磁体在低温下的热负荷以及磁体恒温器内各组成部分的温度分布，并在此基础上，提出减小SCQ磁体热负荷的方法。

We used DGY 2 permanent measurement meter to measure the magnetic properties and demagnetization curve .

对 15 78B7基一系列不同工艺条件下制取的取向度不同的烧结磁体，用 X-射线衍射和磁性测量来分析永磁体织构和取向度与反磁化过程的关系，用 DGY- 2型永磁测量仪测试磁体退磁曲线。

The thermal stability of binary current leads was discussed briefly by means of Minimum Quench Energy.Lastly experiment research was reported on cryocooler cooled magnet made up of Bi-2223/Ag tapes. The descension curve and steady temperature distribution of magnet were achieved.

最后以Bi-2223磁体为样品，建立超导磁体直接冷却实验装置，得到超导磁体冷却过程的降温特性以及稳态温度分布，并对不同的冷却方案及结果进行分析比较，为实际设计超导磁储能低温系统提供了参考依据。

The magnetic field on the magnet was varied by adding iron yokes at the two ends of the magnet.

通过在磁体两端增加铁轭改变磁体上的磁场，研究发现增加铁轭可以有效的减少磁体上产生的指数损耗。

The *** describe E_(51),E_(44) and E_(12) three epoxy resin,through large quantity experiment research,best NdFeB bonded magnets preparation process,E_(12) bonded magnets property is lower,mezzo epoxy E_(44) magnets express the better magnetic properties and compressive strength.

本文选取了E_(51)、E_(44)和E_(12)三种环氧树脂，通过大量实验研究，优化NdFeB粘结磁体制备工艺，E_(12)粘结NdFeB磁体性能最差，环氧值适中的E_(44)制备的磁体，具有较好的磁性能和抗压强度。

According to the theory of remanence, the intensity of remanence is in direct proportion to the density of magnet and Ms.

究其原因：晶粒的细化可以提高磁体的矫顽力；而根据剩磁的理论公式，剩磁与磁体密度和饱和磁化强度成正比，剩磁的提高是磁体密度和饱和磁化强度的提高的综合效果，但其中饱和磁化强度的提高占主导地位。

Systematic research about technology parameters influences on the magnetic properties and microstructure of theses magnets have been done. The better parameters of production have been achieved. They are showed as follows: as-cast alloys with the nominal composition Nd15Fe78-xNbxB7 are prepared by induction-melting under argon atmosphere. As-cast alloys are broken under argon atmosphere and filtered through 40# screen. The coarse grain is ball-milled under 120# avgas for 80 min. The ratio of milling ball and grain is 15:1. Then fine powder is aligned and pressed in a magnet field of 1.5T. The pressure is 80MPa. The green compacts then are shaped by cold isostatic pressing under 280MPa pressure.

通过研究具体工艺参数对磁体磁性能及显微结构的影响，总结出适合于该系列磁体的制备工艺如下：按设计成分将原料放入真空感应熔炼炉内进行合金铸锭的熔炼；合金铸锭在高纯氩气保护下粗破碎过40目筛；以15∶1的球料比在120#航空汽油的保护下滚动球磨80min；球磨好的磁体粉末在1.5T取向磁场下以80MPa的压力模压成型，接着在280MPa压力下进行冷等静压；所得的压坯在1110℃烧结1h，900℃回火处理1h，600℃回火处理2h。

The result shows that the mechanical strength and the thermal stability of bonded hybrid magnet are improved markedly with addition of ferrite in Nd-Fe-B powder,whereas its magnetic performance is reduced slightly.And the temperature coefficient of coercivity with zero is obtained in hybrid magnet with 87% ferrite and 13% HDDR Nd-Fe-B.Due to the magnetic dipole field between the differe...

实验结果表明：随着铁氧体磁粉的加入，复合磁体的磁性能虽略有降低，但其力学性能及热稳定性均有大幅度改善，特别是在铁氧体含量为87%时，复合磁体内禀矫顽力温度系数为零；不同磁粉间静磁场的存在，使得复合磁体在铁氧体含量低于70%时，其磁性能大于平均值，而大于70%时则小于平均值。

The hybrid induction motor includes a housing; a stator installed in the housing and having a stator core portion and a stator coil portion; a rotor coupling body having a rotary shaft rotatably installed in at the housing, a cage rotor portion rotating integrally with the rotary shaft, and a permanent magnet rotor portion coupled to a circumference of the cage rotor portion with a certain air gap so as to be freely rotatable with respect to the rotary shaft; and a reverse rotation preventing switch, when the rotary shaft rotates reversibly, coming in contact with the permanent magnet rotor portion which is moved along the shaft by thrust generated by the rotor coupling body and cutting off power being supplied to the stator coil portion.

公开了一种混合式感应电机。所述混合式感应电机包括：壳体；安装在壳体中并且具有定子铁心部分和定子线圈部分的定子；篆字联接体，具有可旋转地安装在外壳中的旋转轴、整体地与旋转轴一起旋转的鼠笼式转子部分，以及永磁体转子部分，该部分以一定气隙连接到鼠笼式转子部分的周围以可相对于旋转轴自由旋转；以及防止反转开关，当旋转轴反转时，与永磁体转子部分形成并且切断提供给定子线圈部分的电源，其中当旋转轴反转时，转子联接体产生推力，通过该推力永磁体转子部分与反转防止开关相接触。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。