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arc-melting
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  电弧熔炼
     Tb(Fe1-xMnx)11.3Nb0.7 samples(x=0.05, 0.10, 0.15, 0.20) were prepared by means of vacuum arc-melting and subsequent vacuum annealing.
     利用真空电弧熔炼和真空热处理制备了Tb(Fe1-xMnx)11.3Nb0.7(x=0.05,0.10,0.15,0.20)化合物样品。
     The intermetallics of (Mo_(0.85)Nb_(0.15))Si_2 with duplex C11_b and C40 phases was prepared by arc-melting as the alloy used for single crystal growth.
     电弧熔炼制备的(Mo0.85Nb0.15)Si2 合金为MoSi2(C11b 结构)和NbSi2(C40结构)两相组织。
短句来源
     The Mo_3Si-Mo_5Si_3 eutectic alloy, Mo_5Si_3-MoSi_2 hypoeutectic alloy and hypereutectic alloy of Mo-Si system were prepared by arc-melting high purity elements of Mo-99.9% and Si-99.99%.
     以纯金属Mo与纯Si为原料,通过电弧熔炼法制备了Mo3Si Mo5Si3共晶,Mo5Si3 MoSi2亚共晶和过共晶Mo Si系金属间化合物。
短句来源
     RFe 7Mn 4Ti samples (R=Y,Tb,Dy,Ho,Er) were prepared by means of vacuum arc-melting and subsequent vacuum annealing.
     利用真空电弧熔炼和真空热处理制备RFe7Mn4 Ti(R =Y ,Tb ,Dy ,Ho和Er)化合物样品 .
短句来源
     RFe_7Mn_4Ti samples (R=Y,Tb,Dy,Ho,Er) were prepared by means of vacuum arc-melting and subsequent vacuum annealing.
     利用真空电弧熔炼和真空热处理制备RFe7Mn4Ti(R=Y、Tb、Dy、Ho和Er)化合物样品。
短句来源
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  弧熔炼
     Four series of TiAl alloys containing 2.0 wt%Mn,with the Al/Ti ratio being 32/68、33/67、34/66 and 35/65,were prepared with non-consumable electrode arc-melting.
     本研究采用非自耗电弧熔炼制备了以2.0wt%Mn为添加元素,Al/Ti比分别为32/68、33/67、34/66和35/65的四个系列TiAl基合金。
短句来源
     The multielement Nb silicide based alloy with the nominal composition of Nb-24Ti- 6Cr- 3Al- 16Si- 4Hf- 1.5B- 0.05Y (in at.%) was prepared by vacuum consumable arc-melting method.
     采用真空自耗电弧熔炼法制备了名义成分为Nb-24Ti-6Cr-3Al-16Si-4Hf-1.5B-0.05Y(at.%)的铌硅化物基超高温合金母合金锭。
短句来源
     TiB and Nd2O3 reinforced titanium matrix composites were synthesized with raw materials of Ti, Nd and B2O3 by non-consumable arc-melting technique.
     为了得到一种新型、廉价的钛基复合材料,通过钛与B2O3,稀土Nd之间的化学反应,经非自耗电弧熔炼工艺原位合成了TiB和Nd2O3增强的钛基复合材料.
短句来源
     Nb-Si based in-situ composites were processed by vacuum consumable arc-melting method.
     本文设计了Nb-Si基共晶自生复合材料的成分体系,并采用真空自耗电弧熔炼法制备了材料的母合金锭。
短句来源
     Ordered intermetallic PtSb was synthesized by arc-melting and then sintering treatment.
     采用氩弧熔炼和热处理方法获得PtSb有序金属间化合物材料.
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  “arc-melting”译为未确定词的双语例句
     Formation,structure and magnetic properties of Sm_2Fe_(17-x)M_xC_(1.5)(M=Ga,Si)co-mpounds prepared by arc-melting were studied.
     用电弧炉熔炼方法制备了Sm_2Fe_(17-s)M_xC_(1.5)(M=Ga,Si)化合物,研究了它们的形成、结构与磁性。
短句来源
     Zr41.2Ti13.8Ni10Cu12.5Be22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting into a copper mould.
     采用电弧炉熔炼及铜模快铸的方法制备Zr41.2Ti13.8Cu12.5Ni10Be22.5块体非晶合金材料。
短句来源
     In this paper, the Pr0.15Tb0.30Dy0.55Fe1.85-xNir alloys have been fabricated in an arc-melting furnace.
     用电弧炉熔炼得到Pr0.15 Tb0.30 Dy0.55Fe1.85-xNix系列合金.
     The Zr 41.2Ti 13.8Cu 12.5Ni 10Be 22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting in a copper mould.
     利用电弧炉熔炼及铜模快速铸造的方法制备Zr4 1.2 Ti13.8Cu12 .5Ni10 Be2 2 .5大块非晶态材料。
短句来源
     LaMn2Ge2 was prepared by arc-melting method, the crystal structure and magnetic properties were investigated by X-ray powder diffraction and vibrating sample magnetometer, respectively. At room temperature, LaMn2Ge2 has in ThCr2Si2-type structure with space group I4/mmm.
     用非自耗真空电弧炉制备LaMn2Ge2合金,采用X射线衍射研究了合金的结构,LaMn2Ge2在常温下具有ThCr2Si2-型晶体结构,空间群为I4/mmm。
短句来源
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  arc-melting
The AlxCoCrCuFeNi alloys with multiprincipal elements (x=the aluminum content in molar ratio, from 0 to 3.0) were synthesized using a well-developed arc-melting and casting method, and their mechanical properties were investigated.
      
The AlxCoCrCuFeNi alloys with different aluminum contents (i.e., x values in molar ratio, x=0 to 3.0) were synthesized using a well-developed arc-melting and casting method.
      
The results also show that the alloys produced by this relatively new technique, plasma arc-melting, are comparable to those produced by other standard techniques.
      
Nickel-base alloys of nominal composition Ni-25 Wt.% Cr-(0-0.6 Wt.%) RE (RE=Y, La, and Ce) were prepared by conventional arc-melting Ni, Cr, and Y metal.
      
We have prepared a new β-Ti alloy that combines Ti with the non-toxic elements Ta and Mo using a vacuum arc-melting furnace and then annealed at 950 °C for one hour.
      
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Specimens of molybdenum and Mo-base alloys with various amounts of oxygen, nitrogen and carbon were taken from ingots made by the consumable electrode vacuum arc melting process, and were examined by means of metallographic, petrographic and fractographic methods as weU as X-ray and chemical analyses. The following nonmetallic inclusions have been identified: MoO_2, γ-Mo_2N, Mo_2C, ZrO_2, ZrN, TiO, TiN, TiO_2 (containing Mo), α-Al_2O_3 and SiO_2. It was found that no MoO_2 was observed at the grain boundaries...

Specimens of molybdenum and Mo-base alloys with various amounts of oxygen, nitrogen and carbon were taken from ingots made by the consumable electrode vacuum arc melting process, and were examined by means of metallographic, petrographic and fractographic methods as weU as X-ray and chemical analyses. The following nonmetallic inclusions have been identified: MoO_2, γ-Mo_2N, Mo_2C, ZrO_2, ZrN, TiO, TiN, TiO_2 (containing Mo), α-Al_2O_3 and SiO_2. It was found that no MoO_2 was observed at the grain boundaries even at 2000 X when the oxygen content in molybdenum is below 0.0027%.

钼中存在的微量杂质,如氧、氮和碳等,对钼的可锻性和可塑性均有影响。而影响的大小,随它们在钼中的含量、分布位置和存在的形式而不同。为了阐明这一问题,先后用自耗电极真空电弧炉熔炼了含氧、氮和碳量不同的纯钼和钼合金。然后用金相、岩相、断口相、X射线和化学分析等方法研究了试样中氧、氮和碳所形成的夹杂物的类型和分布。试验结果指出,在2000倍下晶界上MoO_2消失的含量为0.0027%。此外,还肯定了试样中夹杂物的类型有:MoO_2,γ-Mo_2N,Mo_2C,ZrO_2,ZrN,TiO,TiN,TiO_2(含Mo),α-Al_2O_3及SiO_2。这些结果对解释钼的脆性和研究冶炼过程有一定参考价值。

In order to make NbTi50 superconducting composite obtain high critical current density,we have studied carefully the melting methode on NbTi50 alloy and the effect of cold-work and heat treatment on the critical current density.The results shown that the ingots obtained through arc melting and the melting in a skull furnace can be used to fabricate NbTi50 supercondu- cting composite with high critical current density.Its process is simple,the consumption for raw materials is less and the alloy compositions are...

In order to make NbTi50 superconducting composite obtain high critical current density,we have studied carefully the melting methode on NbTi50 alloy and the effect of cold-work and heat treatment on the critical current density.The results shown that the ingots obtained through arc melting and the melting in a skull furnace can be used to fabricate NbTi50 supercondu- cting composite with high critical current density.Its process is simple,the consumption for raw materials is less and the alloy compositions are homoge- neous.Cold-work and heat treatment are the important factors to effect the critical current density,cold-work and heat treatment must be carried out alternatively.We have chosen suitable heat treatment cold-work and final deformation,so that the highest critical current density has reached 3.9-4.14 10~5 A/cm~2(5T,4.2K)by using NbTi superconducting composite.

为了使 NbTi 50 超导复合线获得高的临界电流密度,我们详细地研究了 NbTi 50合金的熔炼方法,以及冷加工和热处理对临界电流密度的影响。研究结果表明:电弧——壳式熔炼方法所得铸锭可用来制取高临界电流密度的复合线,该工艺简便,原材料消耗少,合金组份均匀;冷加工和热处理是影响 NbTi 50复合线之临界电流密度的重要因素,要使NbTi 50复合线获得高的临界电流密度,冷加工和热处理必须交替进行。我们选择了合适的热处理,冷加工和最终冷变形量,结果使 NbTi 50多芯复合线的最高临界电流密度达3.9~4.1×10~5 A/cm~2(5T,4.2K)。

The mechanism of the influence of rare earth additions on the properties of Fe-Cr-Al alloys has been studied from thermodynamic and kinetic viewpoints. Rare earths in Fe-Cr-Al alloys exist in three forms: rare earth inclusions, Fe-RE metallic compounds and RE solid solution. The free energy of formation of rare earth compounds in Fe-Cr-Al alloys (standard stats are 1 wt% for the elements in alloy) has been calculated, according to the data of standard free energy given by Vahed. The formation of(RE)_2O_3, (RE)_2O_2S,...

The mechanism of the influence of rare earth additions on the properties of Fe-Cr-Al alloys has been studied from thermodynamic and kinetic viewpoints. Rare earths in Fe-Cr-Al alloys exist in three forms: rare earth inclusions, Fe-RE metallic compounds and RE solid solution. The free energy of formation of rare earth compounds in Fe-Cr-Al alloys (standard stats are 1 wt% for the elements in alloy) has been calculated, according to the data of standard free energy given by Vahed. The formation of(RE)_2O_3, (RE)_2O_2S, (RE)AlO_3, (RE)_xS_y and(RE)OF have been observed in our experiments. When cerium content was more than 0.15 wt%, the spindle and tongue shaped metallic compound Fe_5Ce phase had been easily observed. When yttrium content was more than 0.2 wt%, the metallic compound Fe_9Y made its appearance in OCr_(25)Al_5 alloy. The amount of rare earths in solid solution is very low, but it increases with the increase of the total amount of rare earth additions (within a certain content range). The relation of the alloying rate (Q)with the total amount of rare earth additions [%RE] has been studied for OCr_(25)Al_5 alloy, which have been obtained by a combination of arc melting with electrical-slage refining or by vaccum induction melting. The result is given by the equation Q%=-0.0037+0.64[RE%]。Rare earths in Fe-Cr-Al alloys play the role of deoxidation, desulfuration, modifying of Al_2O_3 non-metallic inclusion, grain refinement, suppressing growth of grain and raising the adhesiveness of the oxide film of Fe-Cr-Al alloys. The ability of deoxidation is decreased in the order of Pr、Nd、La and Ce. Pr and Nd react upon oxygen first, forming Pr_2O_3 and Nd_2O_3 respectively. La and Ce concentrate on La_2O_2S and Ce_xS_y respectively.Non-metallic inclusion in Fe-Cr-Al alloys without addition of RE's are mainly alumina and aluminate, which possess high hardness and pointed shape. Thermodynamical calculation shows that RE's convert Al_2O_3 to (RE)AlO_3 or RE_2O_3. That is one of the reasons for increasing mechnical properties of alloys.Rare earths in Fe-Cr-Al alloys may change the structure of oxide film. After the addition of rare earths, the major phase (α-Al_2O_3) in oxide film remained unchanged, but the minor phase (FeO·Cr_2O_3) has been substituted by La_2O_3, CeO_2, Al_2Y_4O_9 etc.Experiments show that the optimum rare earth content is different and depends upon the method of alloy refining. The optimum rare earth content in the alloy melted by vaccum induction is 0.05~0.12 wt%.

本文对稀土在铁铬铝合金中的作用机理从热力学和动力学两方面进行了研究,证实了稀土在合金中以稀土夹杂、金属间化合物和固溶稀土三种形式存在。稀土在不同工艺冶炼的铁铬铝合金中的物相分配不同。讨论了稀土的脱氧、脱硫、抑制晶粒长大、净化晶界和基体,以及对氧化铝夹杂的变质作用。通过动力学试验和氧化膜分析得到,稀土改变了氧化膜的组成和结构,增加了氧化膜的粘附性、提高了合金的抗氧化性和高温寿命。提出了几种主要的铁铬铝合金冶炼工艺的稀土最佳加入量。

 
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