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   diffusion of carbon 的翻译结果: 查询用时:0.179秒
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diffusion of carbon
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  碳的扩散
     Solution of Carbides and the Diffusion of Carbon in the Laser Hardened Layer of Steel W18Cr4V
     W18Cr4V高速钢激光相变硬化层中碳化物的溶解及碳的扩散
短句来源
     In comparison with the time of formation of a martensite lath——10~(-3)—10~(-6) s, the result of calculation implies that the diffusion of carbon can keep pace with or slightly lags behind the formation of lath martensite.
     与条状马氏体形成的时间——10~(-3)—10~(-6)s比较,可见碳的扩散跟得上或稍落后于马氏体条的形成。
短句来源
     This paper deals with the shape,size and distribution states of carbides,the diffusion of carbon andthe carbides solution mechanism in the laser hardened structure of high-speed steel W18Cr4V. The experimentalresults show that there is carbon diffusion which distance is about hundreds nnl though laser transformationhardening is in super-high speed heating and cooling condltion and the main solution mechanism of the carbide is through the sharp-horn-homogeneous solution,another one is the fracture solution mechanism.
     研究了W18Cr4V高速钢激光相变硬化组织中碳化物的形状、大小和分布、碳的扩散及碳化物的溶解机制。 试验结果表明,激光超快速加热相变过程中仍存在碳的扩散,扩散距离约为数百nm,碳化物的溶解主要是通过尖角──均匀溶解机制进行的,另外还存在断裂溶解机制。
短句来源
     Diffusion of Carbon in Grey lton of Laser Surface Heat Treatment
     灰铸铁激光表面热处理中碳的扩散
短句来源
     It is pointed out that the rare earths accelerate the diffusion of carbon and nitrogen atoms, and the formation of nitride, carbide and carbonitride through direct and indirect actions.
     指出稀土是通过直接和间接作用来加速氮、碳的扩散与氮、碳化物的形成。
短句来源
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  碳的迁移
     Diffusion of Carbon in the Process of Hot Working of Cladding Sheet of High Speed Steel and Q235 Steel
     高速钢与Q235钢复合板热加工中碳的迁移
短句来源
     The diffusion of carbon in hot working process of cladding sheet is analyzed based on diffusion theory and variations of carbon concentration in the high-speed steel matrix.
     根据扩散理论和高速钢加热过程中基体的含碳量变化规律 ,对复合板材热加工过程中碳的迁移进行了讨论。
短句来源
  “diffusion of carbon”译为未确定词的双语例句
     EFFECT OF ALLOYING ELEMENTS ON SELF-DIFFUSION OF IRON AND DIFFUSION OF CARBON IN 12Cr1 MoV
     合金元素对12Cr1 MoV钢中Fe的自扩散和C的扩散能力的影响
短句来源
     Diffusion of Carbon Monoxide Gas in Human Lung and a New Method to Calculate D~(LCO)
     一氧化碳气体在肺内的扩散规律及计算D_(LCO)的新方法
短句来源
     In this paper, the relation between corrosion and the amount of hydrogen diffusion of carbon steel is studied by electric chemistry in NaCl solution connining H2S with low pH, and the effect of concentration of H2S and temperature on the conosion process is studied also.
     采用多种电化学方法研究了碳钢在低pH值氯化钠溶液中的腐蚀过程和渗氢量之问的关系,H2S浓度以及温度对这个过程的影响。
短句来源
     The αFe begins to transform to Fe5C2 structure due to the diffusion of carbon into αFe when the millingtime is 180 h.
     结果表明,球磨过程中样品结构发生了变化,当t=180h时,有新相Fe5C2生成.
短句来源
     The calculation of activation energies indicates that the tempering process below 400℃ is controlled by the diffusion of carbon atoms and above 400℃, by the diffusion of chromium atoms.
     激活能的计算表明:400℃以下回火过程受碳原子扩散的制约; 400℃以上回火过程受铬原子扩散的制约。
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  diffusion of carbon
However, a major problem with depositing diamond onto steel is high diffusion of carbon into steel at chemical vapor deposition (CVD) temperatures leading to a very low nucleation density and cementite (Fe3C) formation.
      
The Auger results enabled the understanding of the brittle to ductile transition for the material by showing the simultaneous diffusion of carbon from grain boundaries (GB) to grains (G) and chromium from G to GB.
      
It was shown that the coupling of chemical reaction and diffusion of carbon and oxygen should be taken into account within the diffusion layer in molten steel in order to explain the change of the concentrations in molten steel.
      
The reaction rate is found to be dominated by effects of nucleation and diffusion of carbon dioxide produced.
      
A theoretical representation has been developed for the supersaturation of molten iron drops with respect to carbon monoxide caused by the counter diffusion of carbon and oxygen.
      
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It is well-known that blue brittleness and temper brittleness of steel are related to diffusion and precipitation in steel. An attempt was made in the present research to investigate this problem by means of internal friction measurements. Experiments show that the diffusion of carbon in α-iron is not affected by carbon concentration, alloying elements and the stage of precipitation in iron. The diffusion of nitrogen in α-iron is, however, hindered by the addition of alloying elements, and...

It is well-known that blue brittleness and temper brittleness of steel are related to diffusion and precipitation in steel. An attempt was made in the present research to investigate this problem by means of internal friction measurements. Experiments show that the diffusion of carbon in α-iron is not affected by carbon concentration, alloying elements and the stage of precipitation in iron. The diffusion of nitrogen in α-iron is, however, hindered by the addition of alloying elements, and is enhanced during the initial stage of precipitation.

一般认为钢的变脆例如蓝脆和回火脆都与钢中的扩散和沉淀有关系。本文尝试用内耗测量的方法研究碳与氮在α-铁及碳素钢中的扩散、脱溶和沉淀,从而进一步地了解钢的变脆的机构。实验的结果指出,碳在α-铁中的扩散不受自身浓度、合金元素和沉淀历史的影响。氮的情形与碳显著不同,合金元素使氮的扩散变慢,在沉淀初期使氮的扩散加速。 较有系统地研究了碳、氮在加工后的α-铁中脱溶时所引起的内耗峰(当振动频率约为每秒1周时出现在250℃左右),发现了高温淬火在含碳或氮较多的试样中所产生的内应力也可以引起这个内耗峰。实验指出:①这个脱溶内耗峰的出现条件与钢的蓝脆的出现条件相同,都是一种应变时效或淬火时效的现象;②与这个内耗峰有关的碳、氮是处于原子的状态。这些联系使我们认为钢的蓝脆是一种应变脱溶或淬火脱溶的过程,是由于原子状态的碳或氮聚集于钢中的内应力区域或晶体缺陷(例如原子脱节)中所引起来的。关于这方面的深入研究正在继续进行中。 根据本实验及以前关于钢铁中碳氮的扩散、脱溶和沉淀所得的结果,对于钢的回火脆的机构也提出了一种初步的看法。回火脆是一种回火沉淀的过程,引起回火脆的沉淀似乎是氮化物而不是碳化物。

Internal friction peaks asscciated with the presence of carbon in several types of f.c.c. alloy-steel (18/8 type stainless steel and high manganese steel) have been observed from measurements with a torsion pendulum. The temperature for maximum internal friction lies between 200-300℃with a frequency of vibration of about I cycle per second. The height uf the peak rises and the position of the peak shifts to a lower temperature with an increase of the carbon content. When the amount of carbon in solid solution...

Internal friction peaks asscciated with the presence of carbon in several types of f.c.c. alloy-steel (18/8 type stainless steel and high manganese steel) have been observed from measurements with a torsion pendulum. The temperature for maximum internal friction lies between 200-300℃with a frequency of vibration of about I cycle per second. The height uf the peak rises and the position of the peak shifts to a lower temperature with an increase of the carbon content. When the amount of carbon in solid solution is reduced by tempering the specimen at an elevated temperature, the height of the peak lowers and the peak shifts to a higher temperature. A comparison of the activation energy and the diffusion ccefficients determined by internal friction methods with those measured in conventional macro-diffusion experiments reveals that the observed internal friction peak is associated with the stress-indused diffusion of carbon in these face-centered cubic steels.

用扭摆作内耗测量,发现了几种面心立方系合金钢(18/8型不锈钢及高锰钢)中含碳可以引起内耗峰。当振动频率约为每秒1周时,峰的巅值温度在200-300℃之间。当钢中固溶体的碳量增多时,内耗峰升高而峰的位置移向低温,当钢中所含的碳因回火而发生沉淀时,内耗峰降低而峰的位置移向高温。把内耗方法所测得的激活能、弛豫时间和由此计算所得的扩散系数与资料上所载的碳在面心立方系的钢中宏观扩散的数据相比较,指出所观测的内耗峰确是由于碳在钢中的微扩散所引起来的。 用同样的实验方法也发现了碳在镍铝合金及在纯镍中由于微扩散而引起的内耗峰。这些实验指出,碳在面心立方系晶体中微扩散而引起内耗峰这件事实,可能是一种普遍的现象。

It is well-known that the stress-induced rotation of the magnetic domains in nickel gives rise to an internal friction peak (when internal friction is plotted as a function of temperature of measurement). An internal friction peak associated with the presence of carbon in nickel was recently observed in our laboratory. In this paper are described further experiments which demonstrate conclusively that this new internal friction peak is not connected with ferromagnetism of nickel but depends upon the amount of...

It is well-known that the stress-induced rotation of the magnetic domains in nickel gives rise to an internal friction peak (when internal friction is plotted as a function of temperature of measurement). An internal friction peak associated with the presence of carbon in nickel was recently observed in our laboratory. In this paper are described further experiments which demonstrate conclusively that this new internal friction peak is not connected with ferromagnetism of nickel but depends upon the amount of carbon in solid solution in nickel. More accurate determinations of the activation energy associated with this internal friction peak show that this activation energy is indeed very close to the activation energy for the diffusion of carbon in nickel. These experiments thus show that the new internal friction peak is associated with the stress-induced micro-diffusion of carbon in nickel.

镍中磁畴在应力作用下的转动可以引起一个内耗峰(当内耗表示为温度的函数时),是众所周知的现象。最近在我们的实验室中发现镍中含碳可以引起内耗峰。本文叙述进一步的实验,确切证明这个新内耗峰与镍的磁性无关,而与镍中固溶体所含的溶解碳量有关。关于激活能的较精确测量指出:与这个内耗峰相联系的激活能确与碳在镍中扩散的激活能很相近。这些实验说明这个新内耗峰是由于碳在镍中的应力感生微扩散而起的。 简单地讨论了这个内耗峰的机构,认为可能与镍的晶体点阵中的空穴有关。

 
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