CAJ | 학술논문

　　研究在电位衰变期间在酸性硫酸锌电解液中，MnO4?和银的含量对5个通用铅银合金阳极电化学行为的影响。当阳极浸入不含MnO 的酸性硫酸锌电解液中时，通过开路电位测定，发现Pb?0.72%Ag进入完全钝化状态所用的时间最短，紧接着的是阳极Pb?0.67%Ag、Pb?0.60%Ag、Pb?0.58%Ag和Pb?0.29%Ag?0.1%Ca。在5 h 的浸入期间，MnO4?离子能加速钝化和增加阳极的腐蚀电流密度。通过交流阻抗法测定，发现在含有MnO4?的电解液中，阳极Pb?0.72%Ag具有最好的耐蚀性，紧接着的是阳极Pb?0.67%Ag、Pb?0.60%Ag，然后是阳极Pb?0.58%Ag和Pb?0.29%Ag?0.1%Ca。?4
　　연구재전위쇠변기간재산성류산자전해액중，MnO4?화은적함량대5개통용연은합금양겁전화학행위적영향。당양겁침입불함MnO 적산성류산자전해액중시，통과개로전위측정，발현Pb?0.72%Ag진입완전둔화상태소용적시간최단，긴접착적시양겁Pb?0.67%Ag、Pb?0.60%Ag、Pb?0.58%Ag화Pb?0.29%Ag?0.1%Ca。재5 h 적침입기간，MnO4?리자능가속둔화화증가양겁적부식전류밀도。통과교류조항법측정，발현재함유MnO4?적전해액중，양겁Pb?0.72%Ag구유최호적내식성，긴접착적시양겁Pb?0.67%Ag、Pb?0.60%Ag，연후시양겁Pb?0.58%Ag화Pb?0.29%Ag?0.1%Ca。?4
The effect of MnO4?and silver content on electrochemical behaviour of five commercial Pb?Ag alloy anodes was studied in acid zinc sulphate electrolyte with and without MnO4? ions at 38 °C during potential decay periods. When the anodes were immersed into acid zinc sulphate electrolyte without MnO4?ions, the Pb?0.72%Ag anode entered complete passivation state in the shortest time among the five anodes, followed by anodes Pb?0.67%Ag, Pb?0.60%Ag, Pb?0.58%Ag and Pb?0.29%Ag?0.1%Ca by measurement of open circuit potential. During immersion of the anodes, MnO4?ions accelerated the passivation and increased the corrosion current density of the anodes. After immersion in zinc electrolyte with MnO , the anode Pb?0.72%Ag had the best?4 corrosion resistance, followed by anodes Pb?0.67%Ag, Pb?0.60%Ag, then the close anodes Pb?0.58%Ag and Pb?0.29%Ag?0.1%Ca by the electrochemical impedance spectroscopy (EIS) analysis.