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nd fe b alloy
相关语句
  nd-fe-b合金
     Corrosion and Corrosion Resistance Surface Treatment of Nd Fe B Alloy
     Nd-Fe-B合金的腐蚀及防蚀表面处理
短句来源
  nd-fe-b合金
     The corrosion behavior in enviromental corrosion test and influence of corrosion on magnetic properties of Nd Fe B alloy were studied.
     研究了在环境腐蚀试验条件下Nd-Fe-B合金的腐蚀行为及腐蚀对其磁性能的影响,并提出了防止腐蚀的表面处理方法。
短句来源
     The results show that the Nd Fe B alloy has high corrosion speed,and the magnetic properties of Nd Fe B alloy decreased after the enviromental corrosion test The surface treatment methods for corrosion resistance were proposed The composite surface treatment which consists of Ni P chemical deposition and electrophoretic painting is good method to enhance the corrosion resistance of Nd Fe B alloy.
     试验结果表明,Nd-Fe-B合金有较高的腐蚀速率,腐蚀后Nd-Fe-B合金的磁性能降低。 化学镀Ni-P及电泳涂装的复合表面处理方法,具有良好的防蚀效果。
短句来源
  “nd fe b alloy”译为未确定词的双语例句
     In order to study the effect of Mn addition and quenching speed on Nd Fe B alloy, the local structures of the Nd 9Fe 85 x B 6Mn x ( x =0.5 and 1.0)nanocomposite manufactured at different quenching speed and under different annealing condition have been investigated by XAFS.
     为了研究淬火速度及 Mn掺杂对纳米复合 Nd- Fe- B磁性材料微结构的影响 ,利用 XAFS技术对不同淬火速度的 Nd9Fe84.5B6Mn0 .5样品及退火和未退火的 Nd9Fe85-x B6Mnx( x=0 .5和 1 .0 )样品 ,进行了 Fe原子局域结构的分析。
短句来源
     Nd Fe B alloy was melted in a vacuum mild frequency induction furnace. The sample was prepared by a hydrogenation disproportionation desorption recombination process. The mechanism of the recombination Nd 2Fe 14 B type hard magnetic material by a desorption of hydrogenation disproportionation product of NdFeB alloy was established by the comparison of the microstructures, X-ray diffraction patterns and magnetic properties.
     研究了Nd Fe B合金的氢化 歧化物的脱氢过程的特点 ,通过对原料合金、氢化 歧化物和脱氢合成材料的微观结构、X射线衍射图和磁性能的对比研究 ,建立了Nd Fe B氢化 歧化物脱氢再合成Nd Fe B型硬磁材料的机理。
短句来源
     Research on the low priced ferro based rare earth permanent magnet materials from substitution of mixed rare earth metals for neodymium in the Nd Fe B alloy was carried out.
     Nd-Fe-B永磁材料不仅具有很高的磁性能 ,而且不含资源紧缺的战略物资钴 ,因而其应用前景非常广阔。 但人们希望其价格再降低 ,所以开发廉价磁体非常必要。
短句来源
  相似匹配句对
     Fe?
     Fe?
短句来源
     Fe?
     采用共沉淀法进行了Fe?
短句来源
     l and Fe.
     1和Fe.
短句来源
     Electronic Structure of Nd-Fe-B Cluster
     Nd-Fe-B原子团电子结构
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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  nd fe b alloy
When the Nd Fe B alloy is spun in the amorphous phase.
      


In present work the microstructures of annealed Nd-Fe-B alloys have been studied. The stable phase regions in Nd-Fe-B ternary system at room-temperature have been established by micro-zone composition analysis and phase identifications. According to the thermal-analysis data of phase transfpr-mation taken from DTA experiments, two vertical sections of the ternary phase diagram (B=5.88at.%, Nd<45.41at.% and Nd=11.76at.%, B<44.56at.%) Were drawn....

In present work the microstructures of annealed Nd-Fe-B alloys have been studied. The stable phase regions in Nd-Fe-B ternary system at room-temperature have been established by micro-zone composition analysis and phase identifications. According to the thermal-analysis data of phase transfpr-mation taken from DTA experiments, two vertical sections of the ternary phase diagram (B=5.88at.%, Nd<45.41at.% and Nd=11.76at.%, B<44.56at.%) Were drawn. Because the crossing point of these two sections just corresponds to the composition of Nd2Fe14B compound, the thermal-analysis curve for the Nd2Fe14B alloy has been discussed specially. The result indicates that the Nd2Fe14B compound precipitates by a peritectic reaction on cooling from liquid, which is supported by the metallographic observation of the alloy.

本工作通过对Nd-Fe-B三元合金样品退火态显微组织的观察,以及微区成分分析和物相鉴定,确定了Nd-Fe-B成分三角在室温下平衡相区的划分。采用差热分析测量了Nd-Fe-B合金的相变点,绘制了Nd=11.76at。%、B≤44.56at。%和B=5.88at。%、Nd≤45.41at。%两个三元垂直剖面相图。这两个剖面相交于Nd_2Fe_(14)B化合物相的正分点,因此,专门讨论了Nd_2Fe_(14)B合金的热分析曲线,结果发现:Nd_2Fe_(14)B合金从液态冷却凝固时,Nd_2Fe_(14)B相的析出是经包晶反应完成的,该合金的铸态形貌也充分说明了这一点。

The effect of substituting elements Co, Dy, Ho, Er, Gd on magnetic properties and thermal stability in Nd-Fe-B system permanent magnet alloys have been studied. The temperature compensation effect of heavy rare earth elements exists not only in SmCo_5 alloys, but also in Nd-Fe-B alloy. However, the Curie temperature of REFe-B alloy is much lower, so the range of temperature compensation is narrower. The Curie temperature of the alloys increases...

The effect of substituting elements Co, Dy, Ho, Er, Gd on magnetic properties and thermal stability in Nd-Fe-B system permanent magnet alloys have been studied. The temperature compensation effect of heavy rare earth elements exists not only in SmCo_5 alloys, but also in Nd-Fe-B alloy. However, the Curie temperature of REFe-B alloy is much lower, so the range of temperature compensation is narrower. The Curie temperature of the alloys increases as iron is partially replaced by cobalt, the range of temperature compensation is enlarged, hence, the compensation effect is enhanced.Replacing partially Nd and Fe in the Nd-Fe-B system alloys with heavy rare earth element Dy and transition metal element Co, the Curie temperature of the alloys increases, the average reversible temperature coefficient of the open circuit flux of the alloys decreases and becomes positive value at last. The Nd-Fe-B system permanent magnet alloys with a=-0.054%/℃ (20-100℃), B_r=11.8kG, _iH_c=9.7kOe, (BH)_(max)=33.8 MGOe and a=-0.028%/℃, B_r=9.5kG, iH_c=15 kOe, (BH)_(max)=20MGOe have been achieved, and they can work above 150℃. By means of the substituting method, the Nd-Fe-B magnets with a=0, B_r=7.9kG, _iH_c=16 kOe, (BH)_(max)=14.3 MGOe have been obtained. With appropriate adjustment of composition of the substituted elements and the heat treatment process, better magnetic properties of the magnets can be obtained!

研究了取代元素钴、镝、钬、铒、钆等对Nd-Fe-B系永磁合金磁性及热稳定性的影响。用钻和重稀土元素取代铁和钕,合金居里温度升高,磁感总损失下降,平均可逆温度系数下降最后变为正值。已得到一种温度系数α=-0.028%/℃(20~100℃)的Nd Fe B系永磁合金,它可以较好地工作在150℃的环境中。用这种取代方法获得的温度系数为零的合金,其磁性为:Br=7900G,_iH_c>16kOe,_bH_c=7.3kOe,(BH)_(max)=14.3MGOe。

A new method for the analysis of major and minor constituents in micro and submicro samples by using ICP variable internal standard method is described. In this method, one of the analyzed elements in the sample is selected as the internal standard Since the internal standard is selected from the components of the sample, but not limited to the major constituent, the method is flexible and simple, and the Precision and accuracy are improved. Since mass ratios are used for analysis, accurate weighing and dilution...

A new method for the analysis of major and minor constituents in micro and submicro samples by using ICP variable internal standard method is described. In this method, one of the analyzed elements in the sample is selected as the internal standard Since the internal standard is selected from the components of the sample, but not limited to the major constituent, the method is flexible and simple, and the Precision and accuracy are improved. Since mass ratios are used for analysis, accurate weighing and dilution of the sample are no necessary. By using the method, the contents of Nd, FeB、Co、La、Ce in micro and submicro samples of Nd-Fe-B alloy series were determined. The results obtained agree with those obtained from macro samples by using ICP spectroscopy method.

本文叙述了用ICP-AES可变内标法进行微量、亚微量样品主、次成分分析的新方法。此法内标选自样品本身所含的被测元素,利用被测元素与内标元素质量比与其谱线强度比之间的一组线性方程,将未知样品中由实验强度比获得的一组质量比值归一化,便可计算出各被测元素的百分含量。由于内标选自样品所含的组分,但不局限于主成分,方法灵活,操作简便,并能提高分析的精密度与准确度。此法无须准确称量样品与准确稀释试样的体积。用此法测定了微量、亚微量非晶态钕铁硼系列合金样品中的Nd、Fe、B、CD、La、Ce的含量,其结果与常量样品ICP光谱法的结果相符合。

 
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