Pb-Ag-Ca新型阳极在MnSO_4-H_2SO_4溶液中腐蚀速度的测定  

Determination of Corrosion Rate for Pb-Ag-Ca Anode in MnSO_4-H_2SO_4 Solution by Electrochemical polarization Curve method

作　　者：杨生恕[1] 俞征[1] 

机构地区：[1]贵州大学化学系,贵阳550025

出　　处：《贵州大学学报（自然科学版）》1997年第3期162-165,共4页Journal of Guizhou University:Natural Sciences

基　　金：贵州省科委自然科学基金;贵州省教委自然科学基金

摘　　要：分别测定了PAC电极（Pb－Ag－Ca新型阳极的简称）在MnSO4－H2SO4溶液中的阴极极化曲线（以～lgi作图）及阳极极化曲线，从图中求得：icor＝15．85μA／cm2，cor＝－0095v，Vcor＝2．95Kg／m2ann．7．09％（电极重量每年消耗的百分数）io（2）=54．70μA/cm2及io（3）=1．10μA／cm2；讨论了PAC阳极的腐蚀机理即反应（2）受反应（3）的动力学参数所控制，为EMD工业中使用该阳极提供基础性数据．The Anodic polarization Curve(~Igi)and The Cathodic polarization Curve of PAC electrde in MnSO4 - H2SO4 Solution haven been determined by contant Potential method respctively. from FigI Calculation icor =15. 85μA/cm2. cor = - 0.095v.V cor = 2. 95Kg/m2. ann or 7. 09 % (weight ann. cor) i0 (2 ) = 54. 70μA/cm2. i0(3 ) = 1.10μa/cm2.The mechanism of Corrosion of PAC electrode haven been discussed which is The reactin (2) was Controlled by the Kinetic parameter of reaction(3). This study presents same foundational data for PAC anode used in the EMD industry.

关 键 词：腐蚀 极化曲线 硫酸锰溶液 阳极 PAC电极 

分 类 号：TG172.6[金属学及工艺—金属表面处理]