共搜索到10204条信息，每页显示10条信息，共1021页。用时：0小时0分0秒678毫秒
......
of warm air. Electrochemical tests were carried out in 1 mol/L NaCl solution using electrochemical impedance spectroscopy(EIS) and potentiodynamic polarization techniques. All experiments... is higher than that of AZ31 or AZ91. This is consistent with the results of electrochemical impedance spectroscopy(EIS) and potentiodynamic polarization curves. It is found in Fig.5 that the surface......
by potentiodynamic polarization, electrochemical impedance spectroscopy and galvanostatic discharge and corrosion behavior was evaluated using self-corrosion rate and hydrogen evolution in 4 mol/L KOH solution... Electrochemical impedance spectroscopy The experimental and fitted EIS plots of nanometer-sized zirconium oxide incorporated aluminum are shown in Fig. 4. The Nyquist plots are characterized by two......
of potentiodynamic, galvanostatic and electrochemical impedance spectroscopy(EIS). Scanning electron microscopy(SEM), energy dispersive spectrometry(EDS) and X-ray diffractometry(XRD) were employed... in these samples increase the activation polarization and decrease the electrochemical activity. 3.2.2 EIS measurement The electrochemical impedance spectra for Mg- 5%Hg-5%Ga alloy at φcorr in a 3.5% NaCl......
......
treatment increases the corrosion resistance while T6 treatment decreases the corrosion resistance of Mn-3Zn alloy. Key words: magnesium alloy; Mg-3Zn; electrochemical impedance spectroscopy; heat... after initial delay of 400 s. Electrochemical impedance spectroscopy (EIS) measurements were conducted using a model 5210 lock in amplifier coupled with EG&G potentiostat model 273. Scan frequency......
Anticorrosion performance of the coating/metal system by electrochemical impedance spectraYinghuai Zhang, Lining Xu, Minxu Lu, and Pu Zhang School of Materials Science and Engineering, University..., electrochemical impedance spectra (EIS) were measured in the 3.5wt% NaCl solution, the chemical component and the formation of corrosion products scale were analyzed by laser Raman microspectroscopy......
electrode(SCE) was employed as the reference electrode, platinum electrode as the counter electrode and the specimens as working electrode. Electrochemical impedance spectroscopy(EIS) was measured... passivating film on the alloy surface. Thus, the ability of ions into matrix alloy will increase. 3.1.2 EIS analysis Electrochemical impedance spectroscopy(EIS) is a powerful tool in studying corrosion......
机械活化黄铁矿在非水溶液介质中的表面行为研究 尹周澜1,陈启元1,刘璐1,张平民1 (1.中南大学,化学化工学院,湖南,长沙,410083) 摘要:采用交流阻抗方法并结合循环伏安方法,研究了机械活化对黄铁矿粉末微电极/非水溶液界面性质的影响.结果表明,机械活化增大了黄铁矿电化学反应的有效活性面积,降低了界面的电荷传递电阻,减少了双电层电容.当有添加剂存在时,微电极的电化学电阻和界面电容越小,黄铁矿颗粒的分散效果越好.十八酸通过改变介电常数和增大双电层厚度而增大静电斥力,提高黄铁矿的分散性能. 关键词:机械活化; 黄铁矿; 交流阻抗谱; 界面作用; 分散性能; mechanical activation; pyrite; electrochemical impedance spectroscopy; interface interaction; dispersion......
. The electrochemical impedance spectroscopy (EIS) of galena in different concentrations of NaCl solution is shown in Fig.7. It can be seen from Fig.7 that the surface resistance of galena decreases from 2.9... as the supporting electrolyte. The Tafel polarization measurement was carried out by the 352 Softcorr Ⅲ software with the scanning speed of 10 mV/s. The AC impedance test was performed by the M398 Electrochemical......
