查询词典 ferrite

The rodlike nano barium ferrite was prepared in the conditions of pH=4,calcination temperature at 850℃ f...

通过对几个主要参数的摸索，得出制备棒状钡铁氧体的最佳工艺条件：pH值为4，煅烧温度为850℃，煅烧时间2h。

Hong Kong, Xu-hui magnet manufacturing company founded in 1976, in 1987 opened its first plant, after ten years of innovation, has now developed into a production and sales to the main motor with a magnet for permanent magnet ferrite, Soft, samarium cobalt, NdFeB magnetic materials, etc. Products as one of professional manufacturer.

香港旭辉磁石制造公司创建于1976年，1987年设立第一家工厂，经过十多年的创新，现已发展成为集生产、销售以马达用磁石为主体的永磁铁氧体、软磁、钐钴、钕铁硼等磁性材料产品为一体的专业制造公司。

To investigate the effect of different laminar cooling patterns on the microstructure and mechanical properties of plates in rolling process,the changes in temperature and microstructure of plate in such cooling process were calculated simulatively by coupling finite difference method with microstructural evolution models,thus predicting the ferrite grain size and phase composition under different cooling patterns .

为了研究层流冷却方式对中厚板组织和性能的影响，用耦合有限差分和微观组织演变模型模拟计算了中厚板层流冷却过程中的温度和组织变化，预测出了不同冷却方式下的铁素体晶粒尺寸和相组成。

The saturation magnetization Ms, magnetic anisotropy field HA and magnetocrystalline anisotropy constant K1 of the above-mentioned particle assemblies wese estimated by using the law of approach to saturation of polycrystalline ferrite, while the Curie temperature Tc was determined by the thermodynamic relation.

用适用于多晶体的趋近饱和定律估计了上述颗粒的饱和磁化强度Ms、磁各向异性场HA和磁晶各向异性常数K1；并用热力学关系定出了居里温度Tc。

The desorption liquor can be used as neutralization reagent of the former coagulation precipitation process. 3The precipitate of ferrite coagulation is analyzed by XRD, EDX and FTIR. The results show that the precipitate is a noncrystal which contains As-O bond, O-As-O bond, Fe-O-Fe bond, SO_4~(2-)and -OH.

3铁盐沉砷过程中产生的沉淀物经过XRD、EDX、FTIR分析，得知为一种非晶态的化合物，化合物中含有As-O键、O-As-O键、Fe-O-Fe键、SO_4~(2-)、-OH基团，该沉淀物经过国家标准毒性浸出试验证实是一种安全无污染的固体物质。

MAGNETIC MATERIALS:Soft magnetic ferrite,silicon steel sheet, iron powder core, noncrystal alloy material, permanent magnet, other materials.

绝缘材料类：绝缘纸、绝缘布、绝缘体、绝缘漆、绝缘涂料、绝缘套管、绝缘组件等；7、结构材料与配件：支持材料、封状材料、接线端子、紧固标准件等

It was found that the impact toughness is obviously decreased when the laths of the acicular ferrite are coarsened,and the fracture morphology is changed from the dimple frac...

当针状铁素体条束比较粗大时，-50℃冲击试样的断裂方式从韧窝断裂转变为解理断裂，韧性明显下降。

The result shows that B combines with N prior to Al at high temperature and brings about coarse particles of BN (about 900 nm), which effectively reduces the amount of fine and dispersive AlN particles, and BN precipitate clinging to MnS precipitation coarsens MnS particles, the pinning of austenite grain boundary is alleviated and the grain growth of ferrite is suppressed.

结果表明高温时B优先于Al与N结合生成粗大的BN粒子(约900 nm)，有效降低了热轧过程细小而弥散的AlN析出量，同时BN依附MnS析出而粗化MnS粒子，减弱了细小弥散析出粒子对奥氏体晶界钉扎以及相变后铁素体晶粒长大的抑制作用。

The results showed that the hardness of CGHAZ is decreasing,bainite ferrite strip coarsens,the shape of M－A constituents transforms strip into block,its size becomes large,and its bulk extends, with increasing of t8/5.In addition austenitic,M－A constituents in γ grain boundary coarsens and manifolds with increasing of t8/5.They all deteriorate the toughness of pipeline.And the extended zone of impact fracture shows brittle.

结果表明，随着t8/5的增加，粗晶区硬度逐渐减小，贝氏体化铁素体粗化，且其间的M－A组元由条状转变为块状，平均弦长增加，体积分数增大，奥氏体晶界M－A组元增多变粗，管线钢的韧性恶化，抗裂性变差，冲击断口扩展区呈脆性断裂。

That if the process can produce much liquid phase during the sintering, and which can become into completely-crystal needle-shap or aborization or bar-shap calcium ferrite instead of glass in the cooling process; if the magnetite is interweaved by the caking into the melting corrosion structure, the granular structure or the eutectic structure instead of exiling in the massive isolation; if the mount of the poreis is little, and uniformitly distributing; if the grain is little; if the organizational structure is symmetrical, all of which can improve the quality of the sintering.

另外还归纳出有利于强度提高的工艺参数和操作制度。分析工业试验和水钢现行生产的矿物组成、结构表明，水钢烧结矿以他形晶磁铁矿为主，铁酸钙为主要的粘结相，多形成熔蚀结构、粒状结构和共晶结构，强度较高；而在台车边缘和表层，由于存在较严重边缘效应和点火温度较低，使该区域的烧结矿组织结构疏松，局部呈蜂窝状或薄壁大孔状，铁酸钙较少而硅酸二钙和玻璃质较多，形成骸晶状结构和磁铁矿连晶，强度较低，致使返矿升高。

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。