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ndfeb
相关语句
  nd-fe-b
     THREE-DIMENSIONAL TOPOLOGICAL ANALYSIS OF Nd-Fe-B AND Pr-Fe-B PHASE DIAGRAMS
     Nd—Fe—B和Pr—Fe—B相图三维拓扑分析
短句来源
     The Study of New Technique and the Structure of Chemical Plating Ni-P of Sintering Permanent Magnet Nd-Fe-B
     Nd—Fe—B烧结永磁体化学镀Ni—P的新工艺和组织结构的研究
短句来源
     For the model nanocomposite magnetsof fm=40% and the grain size a=25 nm, the optimum value of (BH)max=375 kJ/m3 is attained. It is remarkably enhanced in comparison with the maximum of (BH.) max=264 kJ/m3 of the pure Nd-Fe-B magnet.
     结果表明,对fm=40%的模型复合磁体.a=25nm时最大磁能积达到最大(BH)max=375kJ/m3,比纯Nd—Fe—B模型磁体的(BH)max=264kJ/m3有明显提高.
短句来源
     In this paper, result of measurement showed that the atomospheric corrosion products of Nd-Fe- B were composed of Nd(OH)_3γ-FeOOH, α-FeOOH,Fe_3O_4 and B_2O_3, but in the solution of NaCl the corrosion products involved the NdCl_3. The corro- sion products were varied with the pH value of the NaHSO_4 solution.
     测定结果表明,Nd—Fe—B合金大气腐蚀产物的主要组成为:Nd(OH)_3,γ—FeOOH,α—FeOOH,Fe_3O_4及B_2O_3,在NaCl溶液中则有NdCl_3生成。 在不同PH值的NaHSO_4溶液中,锈层的组成有所变化。
短句来源
     Structure and Design of Nd -Fe -B Permanent Magnet Motorcycle Starter Motor
     Nd—Fe—B永磁摩托车起动电机结构和设计
短句来源
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  “nd—fe—b”译为未确定词的双语例句
     EFFECT OF COMPACT DENSITY ON MICROSTRUCTURE AND MAGNETIC PROPERTIES OF SINTERED Nd—Fe—B MAGNETS
     生坯密度对烧结Nd—Fe—B磁体结构与性能的影响
短句来源
     For comprehensive utilization of the rare earth resources in our puntry and to decrease the cost of Nd FeB magnets, the relationshi s between the magnetic properties and composition, processing of the cheap R-Fe-B system permanent magnets have been studied in this paper (R = Pr + Nd, or R = Ce + Pr + Nd).
     为了综合利用我国稀土资源,降低Nd—Fe—B永磁合金的成本,研究了廉价(Nd、Pr)—Fe—B和(Ce、Nd、Pr)—Fe—B永磁材料的化学成分,制造工艺与磁性能的关系及其变化规律。
短句来源
     All the Nd3Fe29-x-yCoxCry compounds are all of easy-plan type anisotropy at room temperature.
     研究表明:对于Sm_3Fe_(29-x-y)Co_xMo_y,当Mo作为稳定元素时,它随着Co含量的增加而降低当x=14和16时,化合物在室温表现出较强的室温单轴各向异性和饱和磁化强度,其居里温度比Nd—Fe—B要高很多。
短句来源
     The technology and flow chart of the production, properties, applications and market forecast about the third generation rare earth permanent magnetic alloys-Nd-Fe-B, at home and abroad are summarized in detail in this paper.
     本文详细地综述了国内外钕铁硼(Nd—Fe—B)永磁合金的生产工艺流程、性能、应用以及展望.
短句来源
     By means of a technique of glass encasement on a levitation melting assembly high undercoolings of melt before solidification were obtained for the Nd - Fe - B - Si systems.
     在悬浮熔炼装置上采用玻璃包熔的净化处理工艺,可使Nd—Fe—B—Si合金熔体获得凝固前的深过冷,实验结果表明:随着过冷度的增加,枝晶形态由树枝晶向胞晶转变,并且是突发性的; 该合金获得最大无量纲过冷度θ≥0.3。
短句来源
  相似匹配句对
     THERMAL ANALYSIS OF Nd-Fe-B MAGNET
     Nd-Fe-B磁体热分析
短句来源
     The distribution of Fe-Mn oxide-bound metals is consistent with the clay particle.
     Fe-M(?)
短句来源
     Fe-N alloys were prepared by means of mechanical milling and high pressure technologies.
     Fe(N)。
短句来源
     Improvement of Magnetic Properties of Nd-Fe-B Alloys
     Nd-Fe-B磁性能的改善
短句来源
     STUDY ON THE Nd-Fe-B-Si ALLOYS
     Nd-Fe-B-Si合金的研究
短句来源
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  ndfeb
The analyzing magnetic field is produced by two powerful (1 T) permanent NdFeB magnets instead of conventional electromagnets.
      
Nanostructure of the rapidly quenched magnetic alloy NdFeB
      
High-resolution field emission spectroscopy has been used to study the nanostructure of the NdFeB alloy.
      
Zwei CoSmoder NdFeB-Magnete wurden jeweils im Abstand von 10 mm in anziehender oder absto?ender Anordnung unter Kulturkammern fixiert.
      
The machine, with a cylindrical NdFeB magnet as main component, could swim in the oils with Re = 10-7.
      
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This paper surveys the brief developing history of permanent magnent (PM)motors,characteristic advantages,and describes their developing trends from thefacts that DC PM small motors will substitute wound field motors,REE systemshas extended the life of PM brush DC motors,the future direction will be thebrushless DC motors,development of a new generation of synchronous brushlessmotors——the Isosyn motor,the market of PM stepper motors will furthurextend,NdFeB PM motors will occupy the market of motors for...

This paper surveys the brief developing history of permanent magnent (PM)motors,characteristic advantages,and describes their developing trends from thefacts that DC PM small motors will substitute wound field motors,REE systemshas extended the life of PM brush DC motors,the future direction will be thebrushless DC motors,development of a new generation of synchronous brushlessmotors——the Isosyn motor,the market of PM stepper motors will furthurextend,NdFeB PM motors will occupy the market of motors for cars,etc.Thepaper also provides serveral suggestions according to the condition of ourcountry.

本文综述永磁电动机的发展简史、性能优点、并从永磁直流小电动机将要取代电激磁小电动机、REE系统延长了有刷永磁直流电动机的寿命、未来的方向——无刷直流电动机、新一代无刷同步电动机——Isosya电机的并发、永磁步进电动机的市场进一步扩大、钕铁硼永磁电动机将要夺取汽车电机的市场等几方面叙述其发展动向。文中还针对我国国情提出了几点建议。

By substituting low purity neodymium for the high purity one, NdFeB permanent magnets of (BH)max=41 MGOe were prepared by powder metallurgy. Several properties of NdFeB alloys were measured by means of x-ray diffraction, the differential thermal analyzer, magnetic balance, extracting sample magnetometer and pulse high magnetic field apparatus respectively. The results show that there is a peak of phase transition at 1439K, and the abnormal phenomenon on the magnetic hysteresis loop at low temperature...

By substituting low purity neodymium for the high purity one, NdFeB permanent magnets of (BH)max=41 MGOe were prepared by powder metallurgy. Several properties of NdFeB alloys were measured by means of x-ray diffraction, the differential thermal analyzer, magnetic balance, extracting sample magnetometer and pulse high magnetic field apparatus respectively. The results show that there is a peak of phase transition at 1439K, and the abnormal phenomenon on the magnetic hysteresis loop at low temperature originates from the conical magneto-crystalline anisotropy of the major phase Nd2Fe14 in the NdFeB alloys.

选用廉价低纯度钕稀土取代高纯度金属钕,用粉末冶金法制备了Nd-Fe-B永磁体.样品最大磁能积(BH)_(max)达41MGOe(0.328MT·A/m).使用X射线衍射仪、差热分析仪、磁天平、提拉样品磁强计和脉冲强磁场等实验方法,对Nd-Fe-B合金进行了分析测量.在1400K附近有相变峰.低温下,Nd-Fe-B合金磁滞回线呈现异常,来源于磁体中Nd_2Fe_(14)B主相锥面型各向异性.

A ferrofluid sealing system of high pressure-resistant capacity is researched experimentally.A NdFeB permanent magnet is used to be a source of the magnetic field and the sealing medium is BH-1 ferrofluid made at BUAA.The experiments described in this paper show that the sealing system with a single stage on each side of the permanent magnet is able to resist 120~180kPa of pressure drop and with a double stage——225~370kPa.The experiments done by the authors predict that the sealing capacity of this system...

A ferrofluid sealing system of high pressure-resistant capacity is researched experimentally.A NdFeB permanent magnet is used to be a source of the magnetic field and the sealing medium is BH-1 ferrofluid made at BUAA.The experiments described in this paper show that the sealing system with a single stage on each side of the permanent magnet is able to resist 120~180kPa of pressure drop and with a double stage——225~370kPa.The experiments done by the authors predict that the sealing capacity of this system can be raised further.

一种高性能的铁磁流体密封系统,采用钕铁硼(NdFeB)永磁体作为磁场源,密封介质则使用北京航空航天大学研制的BH-1铁磁流体。实验结果表明,对于每边磁极靴上具有一道密封级的结构,可以提供120~180kPa的耐压能力;而每边具有两道密封级,则可以达到225~370kPa。并且实验预示这种系统的密封耐压能力还有进一步提高的潜力。

 
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