摘要
采用线性电位扫描极化曲线测试 ,以及恒电位极化下磁场扰动法研究了磁场对铜在氯化钠溶液中阳极溶解的作用。在阳极表观 Tafel区 ,无磁场时恒电位极化然后外加磁场使阳极电流密度增大 ;有磁场时恒电位极化然后撤去磁场使阳极电流密度减小。磁场通过加速电极溶液界面的传质过程而加速阳极溶解。由于 Cu/ Na Cl与Fe/ H2 SO4体系阳极 Tafel区速率控制步骤不同 。
The effect of magnetic field on anodic dissolution of copper in sodium chloride solution was stu died by potentiodynamic polarization curve measurement and potentiostatic polarization with magnetic field perturbation In apparent anodic Tafel range, for copper electrode previously potentiostatically polarized in the absence of magnetic field, anodic current density increased after imposing magnetic field; for copper electrode previously potentiostatically polarized in the presence of magnetic field, anodic current density decreased after withdrawing magnetic field Magnetic field accelerated the anodic dissolution by enchancing the mass transfer process at the electrode/solution interface Magnetic field exhibited different effects on the anodic Tafel range of Cu/NaCl and Fe/H 2SO 4 systems due to different rate controlling steps
出处
《腐蚀与防护》
CAS
2001年第3期95-97,共3页
Corrosion & Protection
基金
国家自然科学基金! (5 98710 18)
国家重点基础研究专项经费 !(G19990 6 5 0 )
金属腐蚀与防护国家重点实验室资助项目
