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nd fe
相关语句
  相似匹配句对
     >(nd/n>l>) d (>t) .
     >(nd/n>l>)d (>t)。
短句来源
     Sm > Nd.
     Sm>Nd。
短句来源
     Y > Nd > Sm.
     Y>Nd>Sm。
短句来源
     AESCHYNITE-(Nd)
     钕易解石
短句来源
     β-FERGUSONITE (Nd)
     β—钕褐钇铌矿(Fergusonite-beta-Nd)
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  nd fe
The composition of this phase has not been determined directly, but is most likely a Nd/Fe ratio of 3, with possibly some interstitial B.
      
Sm2Fe17N(C))x and Nd(Fe,T)12Nx now have large magnetic anisotropy fields exceeding 9 and 7 T, respectively.
      
M?ssbauer study of a novel series of ternary rare-earth iron-rich intermetallics: ND(Fe1-xTix)6+y(x ~ 0.1 and 0≤y≤5)
      
A57Fe M?ssbauer study of Nd(Fe0.5Co0.5)9Si2 has been carried out over the temperature range 4.2-295 K.
      
Neodymium is overabundant with respect to iron in halo stars, [Nd/Fe]=0.33±0.09, with the [Nd/Fe] ratio decreasing systematically with metallicity when [Fe/H]>amp;gt;-1.
      
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This paper discusses the perspective of Nd-Fe-B permanent magnet(PM) in the application to electrical machines. Through the development work of our prototype electrical machine and the comparing of some other kinds of magnets in electrical machines, the conclusion reached are as follows: The advantages of Nd-Fe-B can be brought into full play by applying to d.c.motors and synchronous motors; the influence of its temperature coefficient and limit to the two kinds of motors can also be...

This paper discusses the perspective of Nd-Fe-B permanent magnet(PM) in the application to electrical machines. Through the development work of our prototype electrical machine and the comparing of some other kinds of magnets in electrical machines, the conclusion reached are as follows: The advantages of Nd-Fe-B can be brought into full play by applying to d.c.motors and synchronous motors; the influence of its temperature coefficient and limit to the two kinds of motors can also be overcome. It can replace rare earth-cobalt and alnico in these two motors at present. When the cost of this magnet is further reduced, it can replace ferrite.

本文的目的旨在讨论钕铁硼永磁在电机中的应用前景。通过样机的研制和对几种永磁材料的应用进行比较,得出如下结论:钕铁永磁用在直流电动机和同步电动机上可以充分发挥这种永磁材料的优点,同时温度系数及其极限对这两种电机的影响是可以克服的。目前在这两种电机中它可以取代稀土钴和铝镍钴,在价格进一步降低之后,可取代铁氧体。

Curie temperatures of the simple binary Nd-Fe system with various concentrations of Nd or Fe and the system Nd-Fe-B with a fixed concentration of boron but various concentrations of Nd or Fe have been investigated. Samples were prepared by substituting Nd in Nd-Fe-B wholly or partially with Gd and their Curie points were also measured. A brief discussion of the experimental results has been presented.

对含不同成份Nd或Fe的简单二元Nd-Fe系和在成分中固定硼但含有不同成分Nd或Fe的Nd-Fe-B系的居里温度进行了研究。在制备Nd-Fe-B试样中整个地或部分地以Gd代Nd并测试其居里温度。提供了对实验结果的简要讨论。

In this paper, structural and magnetic studies are carried out on the alloys of the iron-rich Nd-Fe-B ternary system. The results show that for the iron-rich (Fe>40 at%) alloys ternary compound Nd2Fe2Si2 is formed (Si>20%) as well as pseudobinary compound Nd2(Fe, Si)17, in which Si atoms are substituted for the iron atoms on 9d-sites instead of forming new ternary compound as that of Nd2Fe14B. Upon substitution of Si for Fe, both cell volume and magnetization...

In this paper, structural and magnetic studies are carried out on the alloys of the iron-rich Nd-Fe-B ternary system. The results show that for the iron-rich (Fe>40 at%) alloys ternary compound Nd2Fe2Si2 is formed (Si>20%) as well as pseudobinary compound Nd2(Fe, Si)17, in which Si atoms are substituted for the iron atoms on 9d-sites instead of forming new ternary compound as that of Nd2Fe14B. Upon substitution of Si for Fe, both cell volume and magnetization of the Nd2(Fe,Si)17 alloys decrease, but Curie temperature Tc increases due to an enhancement of the ferromagnetic interaction in the Fe sublattice. The room temperature anisotropy fields decrease with increasing Si eon-tent as a result of reduction of the plane anisotropy in the Fe sublattice.

本文对Nd-Fe-Si三元系富铁区域相的结构和磁性进行了研究。结果表明,Nd-Fe-Si三元系富铁区域(Fe>40at%), 除出现NdFe_2Si_2三元金属间化合物外(Si>20at%),同时只出现Nd_2(Fe,Si)_(17)赝二元金属间化合物,其中Si取代9d位的Fe原子,而不能形成类似于Nd_2Fe_(14)B的三元金属间化合物,Si取代Nd_2Fe_(17)中的9d位Fe原子后,使晶胞体积缩小;使饱和磁化强度减小;同时使Fe次晶格的铁磁相互作用增强,导致居里温度增高;还使得Fe次晶格的易面各向异性减弱,造成室温下各向异性场减小。

 
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