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动电位极化
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  potentiodynamic polarization
     Potentiodynamic polarization curves show that the corrosion resistance of the amorphous Fe70Cr10P13C7 is much higher than that of the 1Cr18Ni9Ti stainless steel and amorphous Ni-Nb alloy with addition of Cr.
     该非晶层动电位极化曲线表明,非晶态Fe70Cr10P13C7的耐腐蚀性高于1Cr18Ni9Ti不锈钢和加Cr的Ni-Nb非晶合金。
短句来源
     The potentiodynamic polarization of Fe-20Cr cast alloy and NC were measured respectively in 0.05 mol/L H_2SO_4+0.25 mol/L Na_2SO_4 and 0.05 mol/L H_2SO_4+0.5 mol/L NaCl solutions.
     分别测试了Fe-20Cr铸态和纳米晶涂层在含氯离子溶液(0.005 mol/L H2SO4+0.5 mol/L NaCl)与不含氯离子的溶液(0.005 mol/L H2SO4+0.25 mol/LNa2SO4)中的动电位极化曲线.
短句来源
     Corrosion behaviour of the alloy in 1N H_2SO_4, 1N H_2SO_4+0.5N NaCl, 1N HCl and 10% FeCl_3·6H_2O solutions was investigated by means of the method of complete immersion and the curves experimentally determined of potentiodynamic polarization and of potentiostatic current density vs. time.
     并通过全漫法、动电位极化曲线和恒电位电流密度-时间曲线的测量,研究Fe_75Cr_5P_13C_7合金在IN H_2SO_4、IN H_2SO_4+0.5N NaCl、IN HCI、10%FeCl_3·6H_2O溶液中的耐蚀性能。
短句来源
     The effects of anions CO~(2-)_3,NO~-_2,SO~(2-)_4,MoO~(2-)_4 and PO~(3-)_4 on pitting potential of A3 carbon steel in 0.5 mol/L NaHCO_3+0.05 mol/L NaCl solutions were studied using cyclic potentiodynamic polarization measurements and current-time curves.
     用动电位极化法研究了CO32-、NO2-、SO42-、MoO42-和PO43-5种阴离子对A3钢在0.5 mol/L NaHCO3+0.05mol/L NaCl溶液中的亚稳态孔蚀行为.
短句来源
     The potentiodynamic polarization method has been used to investigate the electrochemical behavior of 1Cr17 stainless steels in NaCl-UO 2(NO 3) 2 solution.
     用动电位极化法研究了不锈钢 (1Cr17)电极在NaCl-UO2 (NO3 ) 2 溶液中的电化学行为 .
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  electrokinetic potential polarization
     An investigation on the anticorrosion characteristics of three kinds of wear resistance alloy,A33-308,A05 and A49, in acidic NaCl solution (as a corrsion medium) has been made by using A C resistance and electrokinetic potential polarization methods.
     通过交流阻抗和动电位极化的方法研究了A05、A33-308、A493种耐磨合金在酸性NaCl溶液中的耐蚀性能。
短句来源
     The pretreatment for electroless nickel plating and technology of electroless nickel plating of AZ31 magnesium alloy, which has good plastic deformation ability, has been studied; The corrosion resistance, initial deposited and corrosion failure of coating have also been studied systematically by using metallographic observation, SEM observation, EDS analysis, XRD analysis, salt spray test, electrokinetic potential polarization curve research techniques.
     本文针对具有良好塑性变形能力的AZ31镁合金,结合金相观察,SEM观察,EDS分析、XRD分析,盐雾试验,动电位极化曲线测量等手段,系统地对前处理工艺、化学镀镍工艺、镀液的周期使用、镀层耐蚀性能、初期沉积机理和腐蚀失效机理进行了研究。
短句来源
     Electrokinetic potential polarization curve show that the corrosion potential ascend 1185mV and the corrosion current descend three orders after plating Ni-P coating on AZ31 magnesium alloy.
     电化学动电位极化曲线表明,AZ31镁合金表面化学镀镍后,自腐蚀电位相对基体镁合金正移1185mV,自腐蚀电流下降3个数量级;
短句来源
  “动电位极化”译为未确定词的双语例句
     The corrosion behavior of Fe-10Cr sputtering coating with nanoscale grain size was investigated in 0.05 mol/L H2SO4+0.5 mol/L NaCl aqueous solution using polarization curves,EIS and Mott-Schottky analysis.
     利用动电位极化曲线、电化学阻抗谱图(EIS)和Mott-Schottky分析等电化学测试手段,探讨了Fe-10Cr纳米涂层在0.05 mol/L H2SO4+0.5 mol/L NaC l溶液中的腐蚀行为.
短句来源
     The surface nanocrystallization can improve the potentiody-namic polarization behavior of 1Cr18Ni9Ti stainless steel in 3.5% NaCl solution.
     喷丸表面纳米化可以明显改善1Cr18Ni9Ti不锈钢样品在3.5%NaCl溶液中的动电位极化特性。
短句来源
     The corrosion behavior of AZ91D without and with coating respectively was studied by dynamical potential polarization in 3.5% NaCl solution.
     利用动电位极化测试研究了原始的和经表面处理的AZ91D在 3.5 %NaCl溶液中的腐蚀行为 .
短句来源
     The electrochemical behaviour of chromized layer on 45 and T_(10) steels was investigated with cyclic potentiodynamic anode polarization and other methods in 3% NaCl solution.
     用循环动电位极化等方法研究了45~#钢和T_(10)钢上的渗铬层在3%NaCl溶液中的电化学性能,为了对比,也用几种不锈钢进行了类似的研究。
短句来源
     Polarization curves and electrochemical parameters of four kinds of titanium alloys (TC4,TC11 ,TA7 and TA12) were measured in six alcohol solutions with the potentiodynamic method.
     采用动电位极化测量技术测定了4种航空用钛合金材料(TC4,TC11,TA7和TA12)在6种醇类溶液介质中的极化曲线和它们的电化学参数.
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  potentiodynamic polarization
For this purpose, potentiodynamic polarization, electrochemical impedance spectroscopy, and long-term corrosion tests including hydrogen evolution and change in open-cirquit potential during immersion time were used.
      
To determine activation energy of corrosion process, potentiodynamic polarization curves were also obtained in a temperature range from 298 to 328 K.
      
Potentiodynamic polarization was used to investigate the effect of acrolein (formed from propargyl alcohol via acid-induced isomerization) on the electrode processes at Armco iron in hydrochloric and sulfuric acid solutions.
      
The corrosive behavior of mild steel in 1M HCl solutions containing selected imidazolines of fatty acids with C7-C17 was investigated using weight-loss method, potentiodynamic polarization technique and scanning elecron microscopy.
      
Potentiodynamic polarization data showed that the compounds studied are mixed type inhibitors in the acid solution.
      
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This paper describes some consequences of selecting inhibitors in sulphuric acid solutions by using the methods of linear polarization technique and. pote-ntiodynamic polarization. It is much easier and faster to select the inhibitors and evaluate their inhibition efficiencies by the above electrochemical methods. It is also more convenient to study the effects of different corrosion factors. By making use of above methods some better efficient inhibitors have been selected in the sulphuric acid solutions.

本文叙述采用线性极化技术和动电位极化曲线法在硫酸介质中筛选缓蚀剂的一些结果。上述电化学方法能较快地筛选缓蚀剂和评价缓蚀剂的缓蚀效率,对于探讨各种腐蚀因素的影响是较方便的。使用上述方法筛选出一些在硫酸介质中有较佳效果的缓蚀剂。

The corrosion resistance of Fe Cr8P13 B5 and FeCr8 P13 C7 alloys in different states have been investigated in the media containing chlorine ions by electrochemical measurement and total immersion test. Experimental results showed that: (1)The amorphotis Fe Cr8 P13 B5 and Fe Cr8 P13 C7 alloys have excellent corrosion resistance. The polarization curves of both amorphous corrosion resistant alloys are much similar measured in 3.5% NaCl at 30℃ by potentio-kinetic method. No breakdown potential(E_b) was observed...

The corrosion resistance of Fe Cr8P13 B5 and FeCr8 P13 C7 alloys in different states have been investigated in the media containing chlorine ions by electrochemical measurement and total immersion test. Experimental results showed that: (1)The amorphotis Fe Cr8 P13 B5 and Fe Cr8 P13 C7 alloys have excellent corrosion resistance. The polarization curves of both amorphous corrosion resistant alloys are much similar measured in 3.5% NaCl at 30℃ by potentio-kinetic method. No breakdown potential(E_b) was observed within the measured region from-1.0 to+1.5 volts(SCE)and their anodic current densities maintain low level,less than 10μA/cm~2;The corrosion rates of both amorphous alloys are lower than 10~(-3)—10~(-4)mm/y in all immersion testing environments such as 3.5%0 NaCl at 60℃, 0.5—2.5N HCl at 30℃, 10% FeCl_3·6H_2O at 40 and 60℃ and 1M H_2S_O4+0.5MNaCl at 30℃. (2) After vacuum annealing treatment at 500℃ for 1 hour, the corrosion resistance of Fe Cr8 P13 C7 alloy dropped abruptly, while that of Fe Cr8 P13 B5 alloy remained as good as in the amorphous state. Electrochemical measurements and immersion test results agree very well.

本文以电化学方法(动电位极化曲线测量)和全浸法考察了不同状态(无定形态、无定形合金退火态以及晶态)FeCr8P13B5和FeCr8P13C7合金在氯离子介质中的耐蚀性能,结果表明(1)无定形FeCr8 P13 B5和FeCr8P13C7合金都具有优异的耐蚀性能。它们的动电位极化曲线十分相似,当极代电压为+1.5伏(SCE)以下时。试样不出现破裂电位Eb,钝态电流维持在10微安/厘米~2以下;这两种无定形耐蚀合金在30℃的0.5N-2.5NHCl、40和60℃的10%,FeCl_3、6H_2O、60℃的3.5%NaCl以及30℃的1MH_2SO_4+0.5MNaCl中全浸168小时其腐蚀速率为10~(-3)-10~(-4)毫米/年。(2)无定形FeCr8P1385和FeCr8P13C7合金经500℃1小时真空退火(晶化)处理后,后者的耐蚀性能急剧恶化,而前者仍保持无定形状态的优异耐腐蚀性能。电化学测量与全浸试验所得的结果是一致的。

The influence of concentrations of KOH and Zn(OH)_4~(2-) and that of temperature on he passivation of zino eleotrode were investigated with the galvanostatic charging method and he linear potential sweep method.For galvanostatic charging measurement, we devised an lectrode mounted in a shielding tube with working surface in upward direction to control the onvection of the electrolyte solution. The i-τ_p~(-1/2) relation was in accordance with the ollowing diffusion equation:(i-i_1)τ_p~(1/2) =1/2nF (C_Z~S - C_Z~0)...

The influence of concentrations of KOH and Zn(OH)_4~(2-) and that of temperature on he passivation of zino eleotrode were investigated with the galvanostatic charging method and he linear potential sweep method.For galvanostatic charging measurement, we devised an lectrode mounted in a shielding tube with working surface in upward direction to control the onvection of the electrolyte solution. The i-τ_p~(-1/2) relation was in accordance with the ollowing diffusion equation:(i-i_1)τ_p~(1/2) =1/2nF (C_Z~S - C_Z~0) (Dπ)~(1/2) = K where τ_p is the ime of passivation, while C_Z~S and C_Z~0 are respectively the concentration of zincate ions at the lectrode surface and in the bulk of the solution. Each curve was composed of two straight lines with ifferent slopes. At lower current densities, i_1= 0, with the straight lines passing through the origin of the oordinate. At higher current densities, i_1≠0.The curves of linear potential sweep showed that the elation between the passivation potential φ_p and a_(OH)-is:φ_γ=constant-(RT)/F In α_(OH)~- hus uggesting that the rate determining step of zine passivation in alkalino solution is the chemical dissolution f inc hydroxide formed on tho electrode surface.In practically complete absence of convection and at lower urrent densities, the results of our investigation indicated that the passivation of zinc is controlled by the iffusion of Zn(OH)_4~(2-) ions, and the anodio passivating film is formed by the precipitation of zinc xide r hydroxide from the super-saturatod zincate solutions on the electrode. At higher current densities, anodic assivating film can also be formed on the electrode surface through electrochemical reactions, apart from he diffusioncontrolled precipitation mechanism.

利用恒电流充电曲线法和动电位极化曲线法研究了KOH和Zn(OH)_4~(2-)浓度、温度等因素对锌电极惰化的影响.对于充电曲线的测取,设计了一个电极表面向上并加套管的装置,借以控制电解液的对流.所得的的关系,符合如下的扩散方程式:几组曲线均由斜率不同的两条直线组成,在低电流密度范围内,i=0,直线通过坐标原点;在高电流密度下,i_1≠0. 动电位极化曲线的结果表明,惰化电位(?)p与ln a_(oH-)符合如下的线性关系:由此进一步验证了锌氧化物的化学溶解过程是惰化的控制步骤. 实验结果表明,在对流几乎不存在和低电流密度下,惰化受Zn(OH)_4~(2-)扩散所控制,由过饱和的Zn(OH)_4~(2-)溶液中析出成相膜而引起惰化.在高电流密度下,除上述因素外,还可由电化学反应直接形成表面惰化层.

 
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