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1)  sintered Nd-Fe-B
烧结Nd-Fe-B
1.
Acidic electroless Ni-P plating on sintered Nd-Fe-B magnet;
烧结Nd-Fe-B永磁体酸性化学镀Ni-P
2.
Study on the New Machining Technology and Mechanism of Sintered Nd-Fe-B Magnet;
烧结Nd-Fe-B永磁材料加工新技术及机理研究
3.
Grinding of Sintered Nd-Fe-B Magnet and Study on Computer Simulation Technology;
烧结Nd-Fe-B永磁材料磨削加工及仿真技术研究
2)  sintered Nd-Fe-B magnets
烧结Nd-Fe-B
1.
A new method for evaluating the alignment degree of sintered Nd-Fe-B magnets quantitatively by X -ray diffraction measure-ments was Proposed, and the results were compared with Br/Js and (Br// -Br)/Br// measured by pulse magnetic field greater than 10T.
提出了一种用普通X射线衍射谱定量测量烧结Nd-Fe-B磁体取向度的简单易行的新方法,并与用10~12T强脉冲磁场测量的Br/Js和(Br//→Br)/Br//值进行了比较。
3)  sintered Nd-Fe-B magnet
烧结Nd-Fe-B磁体
1.
Associated with the mass-production of sintered Nd-Fe-B magnets currently in China, an investigation is presented in this paper of the impact of compact density on microstructure and magnetic properties of sintered Nd-Fe-B magnets.
结合国内烧结Nd-Fe-B磁体工业生产过程,研究了压制成型生坯密度对烧结Nd-Fe-B磁体致密化程度、显微组织、取向度及磁性能的影响。
2.
Epoxy resin coatings with different KH-550 silane concentration on sintered Nd-Fe-B magnets were formed by rendering and blending method.
利用打底法和掺混法在烧结Nd-Fe-B磁体上制备出含有不同KH-550硅烷浓度偶联剂的环氧树脂涂层。
4)  sintered Nd-Fe-B magnets
烧结Nd-Fe-B磁体
1.
Using modified conventional powder metallurgy process for sintered Nd-Fe-B magnets, including annealing of ingot alloy, hydrogen decrepitating, modified jet mill and adding additive during jet milling, we have mass-produced high performance and high corrosion resistance sintered Nd-Fe-B magnets from a conventional ingot alloy without strict protections against oxidation.
利用改进的传统粉末冶金工艺(铸锭热处理、氢爆、改进型气流磨设备以及在气流磨中掺入添加剂等),在无严格的防氧保护情况下,从传统合金铸锭出发,工业化生产出具有高耐蚀性的N48~50档烧结Nd-Fe-B磁体。
2.
The effects of pre-plating in ultrasonic field on the adhesion of electroless Ni-P coatings to sintered Nd-Fe-B magnets were investigated.
采用超声波化学预镀方法,研究超声波功率对Ni-P镀层与烧结Nd-Fe-B磁体结合力的影响。
3.
Ni-P coatings were deposited on sintered Nd-Fe-B magnets through the addition of Nd3+ in the electroless plating solution.
在化学镀液中添加Nd3+,研究其浓度对Ni-P镀层与烧结Nd-Fe-B磁体的结合力和施镀后磁体耐蚀性的影响。
5)  sintered Nd Fe B magnet
Nd-Fe-B烧结磁体
6)  sintered Nd-Fe-B permanent magnetic material
Nd-Fe-B烧结永磁材料
1.
The turning mechanism of sintered Nd-Fe-B permanent magnetic material was investigated experimentally.
对Nd-Fe-B烧结永磁材料的车削加工进行了试验研究。
补充资料:Fe-C-O和Fe-H-O系平衡图
      铁及其氧化物与CO-CO2或 H2-H2O 混合气体达到平衡时的气相组成与温度的关系图(图1)。它是由实验测得的数据绘制的,是冶金过程物理化学常用的一种优势区图。图中三条线分别代表下列三个反应的平衡气相组成:
  
570℃以下:Fe3O4+4CO3Fe+4CO2 (1)


  
570℃以上:Fe3O4+CO3FeO+CO2 (2)


  
FeO+COFe+CO2 (3)


  3Fe2O3+CO─→2Fe3O4+CO2反应达平衡时的一氧化碳分压值太小,几乎与横坐标重合,图中未标出。如果实际气相组成pco/(pco+pco2)高于平衡组成,则反应将向右进行,此时反应式等号右边的固相是稳定的,左边的固相不稳定。图中每条线上方的区域就是该反应式右边固体的稳定存在区。这三条线将整个图划分为三个区域,即Fe、FeO、Fe3O4的稳定存在区。三条线交点是四相(Fe、FeO、Fe3O4及气相)共存点(见相图)。
  
  
  在钢铁冶炼过程中,常利用此图来确定在给定温度和气相组成条件下能够稳定存在的固相。此图还明确表明铁的各级氧化物是逐级转化的(见Fe-O 状态图)。
  
  由图1可见,在虚线(Fe-H-O平衡)与实线(Fe-C-O平衡)交点温度(820℃)以上,H2比CO具有更强的还原能力;在820℃以下,则正相反。
  
  CO对铁还有渗碳作用。当气体中的比值pco/(pco+pCO2)超过反应(4)的平衡组成时,会发生铁的渗碳反应:
  
2CO(气)─→CO2(气)+[C] (4)

[C]表示溶解于铁中的碳。图2绘出了一系列 [C]含量下渗碳反应达到平衡时的气相组成与温度的关系曲线。此图直接示出在给定温度和[C]含量的情况下,气相对铁是渗碳还是脱碳。这类问题在钢的热处理时经常遇到。FeO是非化学计量化合物(见Fe-O 状态图),其中氧含量与其平衡气相组成的关系也在图2中绘出。
  

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