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kinetics of phase transformation
相关语句
  相变动力学
     Valence Electron Structure and Kinetics of Phase Transformation of Fe-C- Cr-Si Alloy
     Fe-C-Cr-Si合金的价电子结构与贝氏体相变动力学
短句来源
     Study on kinetics of phase transformation in the process of continuous cooling for Mo bearing low carbon micro-alloyed steel
     含钼低碳微合金化钢连续冷却过程相变动力学研究
短句来源
     Study on kinetics of phase transformation of Cu-Cr-Zr-Y alloy though measurement of electric conductivity
     用导电率研究Cu-Cr-Zr-Y合金的相变动力学
短句来源
     This paper, by the Theory Yu Ruihuang, calculated the valence electron structures of 18Cr2Ni4WA steel ; and by the solid solution microscope unevenness theory, the degree of depth of constituting the valence electron structures of material atom, proposed C -Cr,C -N,C -W concentration, and discussed the effect on kinetics of phase transformation and form of organize of 18 Cr2Ni4WA steel by this kind of concentration.
     从“余氏理论”出发. 对18Cr_2Ni_4WA钢的价电子结构进行了计算,应用“固溶液微观不均匀性理论”,在构成材料原子的价电子结构的深度上,提出了C—Cr,C—Ni,C—W偏聚,并讨论了这种偏聚对18Cr_2Ni_4WA钢的相变动力学与组织的形态的影响。
短句来源
     The purpose of this paperis to study the kinetics of phase transformation of alumina by determining the chan-ge of specific gravity with time under isothermal heat treatment.
     本文从测定试样在恒温处理过程中的比重变化,研究了氧化铝的相变动力学
短句来源
  “kinetics of phase transformation”译为未确定词的双语例句
     THE KINETICS OF PHASE TRANSFORMATION OF ALUMINA
     氧化铝相变动力学
短句来源
     Electric field induced phase transformation of ZrO_2, stabilized by 3% (mol) Y_2O_3,in the tempera ture range of 200~400℃was found. The kinetics of phase transformation at constant temperature and electric field strength obeys the parabolic law. This indicates that a certain diffusion or propagation process may be in volved in the transformation.
     在200~400℃温度范围内,电场可以显著促进3%(mol)Y_2O_3-ZrO_2中四方相氧化锆向单斜相的转变,而且其等温动力学曲线呈抛物线规律,这说明在氧化锆四方相向单斜相的转变过程中存在着明显的扩散长大现象。
短句来源
     At the temperatures ranging from 1 023 K to 1 223 K, the Cr_2N age-precipitation for high nitrogen austenitic stainless steels was studied. A mathematical model of Cr_2N age-precipitation was established based on the thermodynamics and kinetics of phase transformation. The results were tested by artificial neural network and proved to be satisfactory.
     研究Fe 24Mn 18Cr 3Ni 0 6N高氮奥氏体钢在1023~1223K温度范围内时效过程中Cr2N的析出规律 根据析出相变热力学和动力学建立Cr2N析出的定量计算的数理模型 利用人工神经网络进行计算和验证,结果是满意的 该数学模型可用于高氮奥氏体钢时效Cr2N析出的计算设计和预测
短句来源
  相似匹配句对
     Hydrolysis kinetics of C.
     采用反相离子对高效液相色谱法(HPLC)研究了C.
短句来源
     Absorbance and Kinetics of Photopolymerization
     吸光度与光聚合动力学
短句来源
     The mechanism and the kinetics are discussed.
     讨论了反应机理和动力学;
短句来源
     The reaction kinetics was studied.
     进行环柱形气相乙烯氧乙酰化合成乙酸乙烯酯催化剂的宏观反应动力学研究。
短句来源
     THE KINETICS OF PHASE TRANSFORMATION OF ALUMINA
     氧化铝相变动力学
短句来源
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  kinetics of phase transformation
This article summarizes researchwork on computer modeling of thermodynamics and kinetics of phase transformation behavior in a number of titanium alloys, carried out in collaboration with TIMET UK.
      
The general condition for the rule of additivity to be valid for phase transformation is that the kinetics of phase transformation be a state function independent of temperature history.
      
Calculation and modeling of the kinetics of phase transformation have not yet been widely used for these alloys.
      
The results obtained provide a deeper insight into the kinetics of phase transformation in heat-treated materials and the temperature regime of crystal nucleation.
      
Mechanism and kinetics of phase transformation in cast iron
      
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The phase transformation of alumina at high temperature is rather complex, itis a problem that has attracted quite extensive attention in recent years. However,investigation concerning its kinetics is still rather scarce. The purpose of this paperis to study the kinetics of phase transformation of alumina by determining the chan-ge of specific gravity with time under isothermal heat treatment. The specimen,containing approximately 2% TiO_2 as additive, has been prepared by flamespraying. Itis composed...

The phase transformation of alumina at high temperature is rather complex, itis a problem that has attracted quite extensive attention in recent years. However,investigation concerning its kinetics is still rather scarce. The purpose of this paperis to study the kinetics of phase transformation of alumina by determining the chan-ge of specific gravity with time under isothermal heat treatment. The specimen,containing approximately 2% TiO_2 as additive, has been prepared by flamespraying. Itis composed essentially of γ-Al_2O_3, with a minor inclusion of α-Al_2O_3 (5-8%). X-raydifraction analysis verified that the sequence of transformation of this α-Al_2O_3 is asfollows: γ-Al_2O_3→δ-Al_2O_3→α-Al_2O_3, with the latter step as the slower process. Themechanism of phase transformation has been dicussed and it is hypothesized that therate of transformation of δ-Al_2O_3 to α-Al_2O_3 is governed by the area of interfacedeveloped, which can be expressed as dy/dt=k(1-y)y~(2/3)where y is the fraction of α-Al_2O_3 in the specimen, t is time, and k is the specificreaction-rate constant. The experimental results confirm the validity of the aforemen-tioned expression, from which the values of k between the interval 1098-1190℃ havebeen calculated. The specific reaction-rate constant k, and temperature follow theordinary Arrhenius relationship, and can be represented as the following formula: k=Aexp(-153, 000/RT)The activation energy, 153 Kcal/mole, can be explained as that required for thegrowth of α-Al_2O_3 in δ-Al_2O_3, with the volume diffusion of aluminum ion as thepossible rate-determining factor. The experimental results obtained by Clark and Whitehave also been discussed in this paper, with possible explanations being put forward.

氧化铝在高温下的相变历程相当复杂,是近年来研究得较多的一个问题,但是对相变动力学却还很少涉及。本文从测定试样在恒温处理过程中的比重变化,研究了氧化铝的相变动力学。试样用火焰雾化法淬冷制得,含有约 2%TiO_2作为添加物,它的主要相组成是γ-Al_2O_3,并含有5~8%的a-Al_2O_3。X-射线分析证实这种α-Al_2O_3的相变历程是:γ-Al_2O_3→δ-Al_2O_3→α-Al_2O_3,其中δ→α-是较慢的过程。文中讨论了相变的机构,并假设从δ-Al_2O_3至α-Al_2O_3的相变速度决定于相界面面积,可用下式表示之: dy/dt=k(1-y)y~(2/3)式中y是试样中α-Al_2O_3的分数,t是时间,k是比速度常数。实验结果证实上式是适用的,从而计算了在1098~1190℃范围内的k值,并求得比速度常数k和温度的关系是:k=Aexp(-153,000/RT)。153千卡/克分子的能量应看作是α-Al_2O_3在δ-Al_2O_3母相中的生长活化能,而铝离子的体积扩散可能是过程的控制因素。文中还讨论了Clark和 White的实验结果,并提出了可能的解释。

This paper, by the Theory Yu Ruihuang, calculated the valence electron structures of 18Cr2Ni4WA steel ;and by the solid solution microscope unevenness theory, the degree of depth of constituting the valence electron structures of material atom, proposed C -Cr,C -N,C -W concentration, and discussed the effect on kinetics of phase transformation and form of organize of 18 Cr2Ni4WA steel by this kind of concentration.

从“余氏理论”出发.对18Cr_2Ni_4WA钢的价电子结构进行了计算,应用“固溶液微观不均匀性理论”,在构成材料原子的价电子结构的深度上,提出了C—Cr,C—Ni,C—W偏聚,并讨论了这种偏聚对18Cr_2Ni_4WA钢的相变动力学与组织的形态的影响。

Electric field induced phase transformation of ZrO_2, stabilized by 3% (mol) Y_2O_3,in the tempera ture range of 200~400℃was found. The kinetics of phase transformation at constant temperature and electric field strength obeys the parabolic law. This indicates that a certain diffusion or propagation process may be in volved in the transformation. The transformed phase amount on the anode side surface is much higher than that on the cathode side, and this proves that the tetragonal to monoclinic...

Electric field induced phase transformation of ZrO_2, stabilized by 3% (mol) Y_2O_3,in the tempera ture range of 200~400℃was found. The kinetics of phase transformation at constant temperature and electric field strength obeys the parabolic law. This indicates that a certain diffusion or propagation process may be in volved in the transformation. The transformed phase amount on the anode side surface is much higher than that on the cathode side, and this proves that the tetragonal to monoclinic phase transformation is directly related to the oxygen vacancy or defect clusters migration process.

在200~400℃温度范围内,电场可以显著促进3%(mol)Y_2O_3-ZrO_2中四方相氧化锆向单斜相的转变,而且其等温动力学曲线呈抛物线规律,这说明在氧化锆四方相向单斜相的转变过程中存在着明显的扩散长大现象。另外,近阳极面的相变量明显高于近阴极面的相变量,这说明该相变过程与氧空位或缺陷簇的迁移过程密切相关。

 
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