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   diffusion of 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.096秒
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diffusion of
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  扩散
    Rheological Behavior and Atomic Diffusion of Pd-based and Zr-based Bulk Metallic Glasses
    Pd基Zr基大块金属玻璃的流变及原子扩散行为研究
短句来源
    INTERNAL FRICTION PEAK ASSOCIATED WITH THE STRESSINDUCED DIFFUSION OF CARBON IN LOW-CARBON ALLOY MARTENSITE
    碳在低碳合金马氏体中微扩散所引起的内耗峰
短句来源
    INTERNAL FRICTION PEAK ASSOCIATED WITH THE STRESSINDUCED DIFFUSION OF HYDROGEN MOLECULES IN HIGH CHROMIUM-NICKEL ALLOY STEELS
    氢分子在几种高铬镍合金钢中微扩散所引起的内耗峰
短句来源
    A STUDY ON THE DIFFUSION OF CARBON IN γ-IRON BY METHOD OF INTERNAL FRICTION
    用内耗方法研究碳在γ-铁中的扩散
短句来源
    AN INVESTIGATION ON THE BEHAVIOR OF THE DIFFUSION OF THE BORON IN THE SUPERALLOY K18 TLP BONDING
    K18合金等温凝固扩散焊时硼扩散行为研究
短句来源
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  中扩散
    EFFECT OF COLD DEFORMATION ON THE ACTIVATION ENERGY FOR THE DIFFUSION OF NITROGEN IN 38CrMoAlA STEEL
    冷塑变对氮在38CrMoAlA钢中扩散激活能的影响
短句来源
    2. Diffusion of copper in aluminium can be retarded by addition of 0.2% Re at thetemperature above 500℃ 3. Diffusion of copper in aluminium can be speeded by the addition of 1%Mn 4. There has been no significant effect on the diffusion velocity of coppes in aluminium byaddition of 0.2%Zn, 0.2%Zr, 0.2%Mn and 1%Re.
    3.添加1%Mn能使铜在铝中扩散加快。 4.添加0.2%Zn,0.2%Zr,0.2%Mn,1%Re后,铜在铝中扩散速率无明显变化。
短句来源
    Studies were made of the effect of tempering varied at temperature rangedfrom 25 to 750℃ for 0.5 to 100 h on the changes of measured hardness, precipitated phaseand its alloying elements content as well as the activation energy of tempering for quenchedsteel 20Cr11MoVNbNB. Tempering of the steel below 400℃ may be controlled by diffusionof C atoms in α-Fe, and over 400℃, by diffusion of Cr, also Mo or V, in α-Fe
    研究了淬火20CrllMoVNbNB钢在室温-750℃不同温度回火0.5—100h后的硬度相析出变化,析出相中合金元素含量变化以及回火激活能等,证明在低于400℃时,该钢的回火过程受C原子在α-Fe中扩散所控制; 在高于400℃时,回火过程受合金元素Cr(以及Mo,V)在α-Fe中扩散所控制
短句来源
    Experimental results showed that a ternary eutectic Pb-Sn-Ag phase with melting temperature near 178℃ was formed as a result of the diffusion of Pb from 95Pb5Sn to eutectic SnAg.
    发现由于95Pb5Sn 中的Pb 向熔融共晶SnAg 焊料中扩散而部分生成三元共晶Pb - Sn- Ag 相,其熔点约为178℃。
短句来源
    A FORTRAN program was successfully realized for diffusion equations of extended source of limited extent. The calculation results for the diffusion of alloying elements such as C,Co,Cr,Mn,Mo,Ni and V in ironbased alloys show the diffusion distance especially for Ni and Mo can reach only 1~3μm in sintering temperature range of 11201150℃;
    描述了计算扩散分布的FORTRAN程序框图,给出了C、Co、Cr、Mn、Mo、Ni及V等合金元素在Fe中扩散分布的计算结果,在通常烧结温度1 120~1 150℃下,Mo和Ni等元素的扩散距离仅1~3μm。
短句来源
  扩散规律
    The Law of Diffusion of Hydrogen in Cylindrical Body of Hydroprocessing Reactors
    氢在加氢反应器筒体钢中的扩散规律
短句来源
    Diffusion of Co in Hard Alloy Cutting Tools Under the Condition of Microwave Plasma CVD and its Influence on Diamond Coatings
    微波等离子体条件下硬质合金刀片中钴的扩散规律对金刚石涂层的影响
短句来源
    The influence of heat and force factors and their interaction, such as forging temperature, heat treatment process, deformation amount, on the element diffusion of Al, Nb, V at weld zone has been investigated for the Ti-24Al-15Nb-1.5Mo/TC4 dual alloy billet after welded in vacuum and rolled or treated.
    研究了2种状态的金属问化合物基合金Ti-24Al-15Nb-1.5Mo与TC4钛合金毛坯经真空电子束焊接后,锻造温度、热处理制度、变形量等热力因素以及它们的交互作用对合金元素Al,Nb,V在焊接界面上扩散规律的影响。
短句来源
    The electric-resistance method is employed to study the diffusion of nitrogen in steel.
    用电阻法研究钢氮化扩散规律
短句来源
    The law of diffusion of hydrogern in 2. 25CrlMo cylindrical body of hydroprocessing reactors was studied using electrochemical hydrogen permeation techniques.
    采用电化学渗氢的方法研究了加氢反应器简体钢2.25Cr1Mo中氢的扩散规律
短句来源
  “diffusion of”译为未确定词的双语例句
    Effect of Deformation and Polygonization on Diffusion of Carbon Atoms During Carburization of Steel 20
    形变和多边化对20钢在渗碳过程中碳原子扩散的影响
短句来源
    The Study of Ion Multielement Simultaneous Diffusion of Tool and Die Steel
    工模具钢离子多元共渗的研究
短句来源
    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
    Study on Thermal Diffusion of Zinc-Aluminum Coating on AZ91D Magnesium Alloy
    AZ91D镁合金热喷涂锌铝涂层的热扩散研究
短句来源
    Effect of Phosphorus on Blocking the Diffusion of Oxygen to Extend the Stress Rupture Life of GH761 Alloy
    磷阻碍氧沿晶侵入改善GH761合金持久性能的作用
短句来源
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  diffusion of
One DR peak associated with the short-distance diffusion of oxygen vacancies was observed in both temperature and frequency spectra.
      
The method of NMR spin echo with the magnetic field pulse gradient was used for studying self-diffusion of water molecules in the radial root direction.
      
Diffusion of an Organic Cation into Root Cell Walls
      
Nonspecific pore-forming proteins (porins) are the major proteins of the outer membrane of Gram-negative bacteria responsible for diffusion of low-molecular-weight compounds.
      
Furthermore, these inhibitors not only reduce the local tissue damage but also retard the easy diffusion of systemic toxins and hence increase survival time.
      
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Creep under very small torsional stress has been investigated for 99.95% polycrystalline iron in the temperature range of 350°-525℃. The general features of the creep curves obtained are essentially the same as those previously reported for 99.991% aluminum. The creep is shown to be consisted of two parts, one occurring at lower temperatures or shorter times and the other at higher temperatures or longer times. The first part of the creep is limited in extent and is associated with the viscous behavior of grain...

Creep under very small torsional stress has been investigated for 99.95% polycrystalline iron in the temperature range of 350°-525℃. The general features of the creep curves obtained are essentially the same as those previously reported for 99.991% aluminum. The creep is shown to be consisted of two parts, one occurring at lower temperatures or shorter times and the other at higher temperatures or longer times. The first part of the creep is limited in extent and is associated with the viscous behavior of grain boundaries. The activation energy for this grain-boundary creep is 78,000 ± 4,000 calories per mole according to the present creep and stress relaxation measurements. This value is close to the activation energy for self-diffusion of iron, a correlation which indicates that, in so far as to the mechanism of atomic migration is concerned, grain boundaries may not be very different from the interior of the grains.

用99.95%的多晶纯铁作了从350°-525℃的扭转微蠕变及应力弛豫试验,所得结果的概貌与以前用多晶纯铝所得的基本上相同。从蠕变曲线上可以看出这蠕变是由两部分组成的:第一部分是在较低温度或较短时间内发生的,第二部分是在较高温度或较长时间内发生的。第一部分的蠕变是有限的,是由于晶粒间界的粘滞性滑移所引起。根据微蠕变及应力弛豫测量的结果,这一部分蠕变所包含的激活能是78,000±4,000卡/克分子。这个激活能(晶粒间界滑移激活能)的数值与纯铁自扩散的激活能很相近,表示晶粒间界与晶粒内部对于原子迁移的基本过程而言并没有显著的差异。 加碳于纯铁中对于这两部分的蠕变都有显著的影响。最值得注意的结果是含碳量少到0.0004%时已经使晶粒间界的粘滞性滑移受到显著的阻碍。这些发现在控制金属高温蠕变的问题上指出一个一般性的原则,对于以前所提出来的晶粒间界空穴模型也提供了一些新的实验证据。 根据加碳的实验结果,对于第二部分高温蠕变的机构也提出了一个初步的看法,这蠕变所包括的基本过程可能是晶粒内部的空穴中的原子重新排列。

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...

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。

 
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