一、引言通过金属电极在土壤介质中的稳态极化曲线的测定,可以研究土壤腐蚀机理,还可以作出阴极保护极化图,由图可以得出阴极保护参数(最小保护电位、最大保护电位和保护电流密度)。在金属自腐电位附近及弱极化区测量极化曲线,可以快速测定金属腐蚀速度。此外,土壤介质中极化曲线的测定,对于土壤中电极过程的研究以及土壤 I. INTRODUCTION The steady-state polarization curves of metal electrodes in soil media can be used to study the corrosion mechanism of soil and to make the polarization diagram of cathodic protection. Cathodic protection parameters (minimum protection potential, maximum protection potential And protect the current density). Polarization curves are measured near the metal autocorrelation potential and in the weakly polarized region to allow rapid determination of the metal corrosion rate. In addition, the determination of the polarization curve in the soil medium, the study of the electrode process in the soil, and the soil