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阴极电势
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  cathodic potential
     STUDY AND APPLICATION OF NEW TECHNOLOGY OF CONTROLLING CATHODIC POTENTIAL ELECTROWINNING
     控制阴极电势电积法新工艺及其应用
短句来源
     SEPARATION OF COPPER AND ARSENIC BY ELECTROWINNING OF CONTROLLING CATHODIC POTENTIAL
     控制阴极电势电积法脱铜砷
短句来源
     It is an exposition of current consumption and economic results of disconnected electrowinning, of continuous electrowinning and of electrowinning of controlling cathodic potential.
     对采用间断电积法、连续电积法、控制阴极电势电积法净化铜电解液的电耗和经济效益作了论述。
短句来源
     the third step is the reduction of NbO to metal Nb,indicated by the impedance semicircle in the low frequency region. The charge transfer resistance and the activation energy were obtained by simulating the impedance spectra to equivalent circuits and decreased with increasing cathodic potential.
     第三步是 NbO 还原为金属 Nb,交流阻抗谱在低频端出现第三个响应半圆.用等效电路拟和交流阻抗谱,得到了脱氧反应的电荷传递电阻及其活化能.电荷传递电阻和活化能均随着阴极电势的增加而降低.
短句来源
  cathode potential
     When the beam current increases, the virtual cathode position is closer to the injection plane and its oscillating region gets narrower, the virtual cathode potential decreases and its amplitude increases, the oscillation frequency increases above the beam plasma frequency.
     电流越大,虚阴极位置越靠近注入面且变化范围越小,虚阴极电势越低且振幅越大,振荡频率越高且大于电子束等离子体频率。
短句来源
     The content of terbium increases with the shifting the cathode potential to negative direction and the increasing of molar ratio Tb(Ⅲ)/Ni(Ⅱ) .
     由恒电势电解法得到非晶态的Tb_Ni合金膜。 铽的质量分数随着阴极电势的负移和Tb(Ⅲ ) Ni(Ⅱ )摩尔比增大而增大。
短句来源
     Thus,the electron beam in the former has more kinetic energy than that in the latter when the cathode potential and the current are the same and the coaxial device might obtain higher beam-wave conversion efficiency.
     因此在阴极电势和束流相等的情况下,同轴波导中的束流具有更高的动能,同轴器件有可能获得更高的微波转换效率。
短句来源
     X-ray diffraction(XRD)was used to analyze the effect of cathode potential and deposition time on preferred orientation of the ZnO thin film. It showed that(002)preferred orientation of the ZnO thin film decrease with reducing the potential and increasing the deposition.
     利用X射线衍射技术分析了阴极电势和沉积时间对ZnO薄膜择优取向的影响,结果表明ZnO薄膜的(002)择优取向是随电极电势的下降而逐渐减弱的,而且随沉积时间的增加(002)择优取向也逐渐减弱。
短句来源
     Optical transmittance spectra of the ZnO thin films showed the obtained ZnO films are transparent to visible light and the average optical transmittance values of ZnO thin films were about 80 %~90%. In addition,the bandgap energy which was independent of the applied cathode potential was about 3.5 eV,while it would shift towards low values as the deposition time increased at an applied cathode potential of-2.5 V.
     透射光谱测量表明,实验所获得的ZnO薄膜在可见光范围内是透光的,平均透过率高达80%~90%,不同阴极电势下的禁带宽度均为3.5eV左右,且在阴极电势为-2.5V时,禁带宽度随沉积时间的增加而逐渐减小。
短句来源
  “阴极电势”译为未确定词的双语例句
     The reason for low cathodic current efficiency in alkaline zinc plating is that the electrodeposition potential of complexing ion Zn(OH) 4 2- is so negative that H 2 is released greatly at cathode.
     碱性锌酸盐镀锌阴极电流效率低的原因是配合离子Zn(OH) 4 2 -电沉积的阴极电势很负引起阴极大量析氢。
短句来源
     The content of Terbium in the alloy increases with the increasing of the molar ratio of Tb(Ⅲ)/Ni(Ⅱ) and the maximum is 87.88%.
     合金中Tb的含量随着阴极电势的负移先增大而后减小,随Tb(Ⅲ)/Ni(Ⅱ)摩尔比增大而增大,Tb的最大含量可达87.88%;
短句来源
     The content of magnesium in the alloy increases with the increasing of the cathodal potential and the maximum was 12.78%. Mg_2Ni hydrogen storage alloy was obtained when the molar ratio of Tb(Ⅲ)/Ni(Ⅱ)and Mg(Ⅱ)/Ni(Ⅱ)are 3.4/1 and 8/1.
     Mg的含量随着阴极电势的负移而增大,最大可达12.78%,在Tb(Ⅲ)/Ni(Ⅱ))摩尔比为3.4/1,Mg(Ⅱ)/Ni(Ⅱ)摩尔比为8/1时,Mg/Ni原子比为2/1,符合Mg2Ni储氢合金的组成.
短句来源
     In small test the value of current efficiency reached 80%. In the solution after eletrowinning copper content was less than 1 g/L, arsenic content less than 0.5 g/L. The dual benefit in both environment protection and economization of energy could be acquired by the purification process.
     控制阴极电势脱铜砷电积法的脱铜电流效率达到80%以上,电积后液中铜含量小于0.5g/L,砷含量小于1g/L,该方法具有节能与环保双重效益。
短句来源
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  cathodic potential
At a high cathodic potential (-1.2 V), the process of nickel deposition is sharply decelerated due to the surface passivation of the cathode with nickel oxides and the adsorption of organic products.
      
It is found that, at a certain Zn++concentration in the electrolyte, the cathodic current (ic) peaks are observed in the potentiodynamic curves; the peak's height depends on the electrolyte composition and the cathodic potential sweep rate.
      
Electrochemical behavior of a Zr electrode in sulfuric acid solutions is studied, at various overpotentials, temperatures, pH values, and concentrations of surfactants, in a cathodic potential range.
      
It occurs only in the presence of oxygen, is independent of the cathodic potential in a range from 0.00 to -0.45 V, and is determined by the convective experimental conditions and the acidity of the solution.
      
Due to the formation of a blocking film of citrate-hydroxide zinc compounds, cathodic potential increases with time, which helps reach a codeposition potential of Mn ions.
      
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  cathode potential
Effect of Cathode Potential on Electrosynthesis and Physicochemical Properties of Styrene and Methyl Methacrylate Copolymers
      
Simple formulas for the total current, the cathode sheath thickness, and the cathode potential drop as functions of the electric field on the cathode surface are derived.
      
A vircator with an inhomogeneous external magnetic field superimposed onto the cathode-anode-virtual cathode potential well was studied by methods of computer modeling.
      
The passage to a discharge with predominant photoemission leads to a decrease in the cathode potential fall region, a drop in the ion current to the cathode, and an increase in the efficiency.
      
The changes in resonance frequency were analyzed as a function of the electrode potential, indicating that the process depended not only on the electrode material but also on the cathode potential.
      
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This paper analyses in detail the various factors which may cause the cell's EMF to be increase or decrease. It also discusses specially the change of the acid concentration in cadmium sulfate solution caused by some chemical processes during the aging period, the influence of some heavy metal ions in the electrolytic solution to the anode potential of the cell, and the influence of the size of the mercu-rous sulfate crystal to the cathode potential. As for some methods used to decide whether the accuracy class...

This paper analyses in detail the various factors which may cause the cell's EMF to be increase or decrease. It also discusses specially the change of the acid concentration in cadmium sulfate solution caused by some chemical processes during the aging period, the influence of some heavy metal ions in the electrolytic solution to the anode potential of the cell, and the influence of the size of the mercu-rous sulfate crystal to the cathode potential. As for some methods used to decide whether the accuracy class index of EMF for the new-made cells are suitable or not, the authors give a brief discussion.

本文分析了导致标准电池电动势值上升和下降的各项因素。文中对引起硫酸镉溶液浓度变化的各种化学过程、电解液中重金属离子对阳极电势的影响以及硫酸亚汞晶粒尺寸对阴极电势的影响作了专门的讨论,并对制备不久的新电池电动势准确度等级的几种预测方法作了简要评论。

The virtual cathode oscillation in relativistic electron beams is studied by a 1-D electrostatic particle simulation code with the finite -size-particle model. The calculation results show following conclusions: When injection current is less than the space charge limiting current, electron beam propagates stably and transsmits completely. When injection current exceeds the space charge limit, its propagation is unstable, a part of electrons reflect and the other electrons transsmit. The position and potential...

The virtual cathode oscillation in relativistic electron beams is studied by a 1-D electrostatic particle simulation code with the finite -size-particle model. The calculation results show following conclusions: When injection current is less than the space charge limiting current, electron beam propagates stably and transsmits completely. When injection current exceeds the space charge limit, its propagation is unstable, a part of electrons reflect and the other electrons transsmit. The position and potential of the virtual cathode caused by space charge effects oscillate periodically. When the beam current increases, the virtual cathode position is closer to the injection plane and its oscillating region gets narrower, the virtual cathode potential decreases and its amplitude increases, the oscillation frequency increases above the beam plasma frequency.

本文运用有限大小粒子模型,用等离子体粒子模拟方法,对相对论电子束的虚阴极振荡作了一维静电粒子模拟。结果表明,在注入电流小于空间电荷极限电流时,电子束能稳定传输并能全部通过。当注入电流超过空间电荷极限电流时,传输是不稳定的,将有部分电子反射,部分通过。空间电荷形成的虚阴极的位置和电势周期性地振荡。电流越大,虚阴极位置越靠近注入面且变化范围越小,虚阴极电势越低且振幅越大,振荡频率越高且大于电子束等离子体频率。

Rare-earth perovskite-type oxide is the most promising cathodic material for use in solid oxide fuel cell(SOFC).A discussion is made on the preparation of the ultrafine powder,theresistivity and thermal expansibility of the material. Thin and well-adhered perovskite elec-trode coatings with good conductivity and porosity and a uniform pore distribution have beenformed on the zirconia electrolvte substrates by the methods of dip coating and ceramic sin-tering and the cathodic polarization has been measured.It...

Rare-earth perovskite-type oxide is the most promising cathodic material for use in solid oxide fuel cell(SOFC).A discussion is made on the preparation of the ultrafine powder,theresistivity and thermal expansibility of the material. Thin and well-adhered perovskite elec-trode coatings with good conductivity and porosity and a uniform pore distribution have beenformed on the zirconia electrolvte substrates by the methods of dip coating and ceramic sin-tering and the cathodic polarization has been measured.It is proposed that the overpotentialcan he expressed as η=a+bI+clg {I/mA·cm-2}and that the characteristic value Ic can beused as a parameter for comparison. The output voltages are observed when an oxygen con-centration cell is prepared with the perovskite-type cathode,platinum anode and stabilizedzirconia electrolyte.

稀土钙钛矿型氧化物是固体氧化物燃料电池(SOFC)研制中十分有应用前景的阴极材料。就这类材料的超细粉体制备、电阻率、热膨胀性等问题进行了讨论;采用浸渍涂覆和功能陶瓷烧结方法,在固体电解质ZrO_2基体上形成了钙钛矿电极膜层;初步测试了它们的极化情况,提出过电位表达式的分解方法,获得特征值I_c,用来评价活化极化所占的比例和比较电极与电解质的性能;观察了它们作为氧浓差电池阴极的电势。

 
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