储罐内壁气相阴极保护电化学参数的确定

Determination of gas phase electrochemistry protective parameters in interior wall of the tank

在储罐内壁的气相环境中，以CP-F1为固体电解质涂层，石墨导电涂料为阳极涂层，石墨为参比电极，通过实验测定了金属材料的自腐蚀电位、保护电位和最小保护电流密度等电化学参数，实验结果表明：储罐内壁气相阴极保护电化学参数中，最小保护电位为-300．0mV；最大保护电位为-600．0mV；储罐有良好涂层时，最小保护电流密度为0．200～20．000mA／m^2。

This paper provides a basis for the theory of gaseous phase cathodic protection in interior wall of tank by determining the self-corrosion electric potential of steel, the electric potential required to protect steel from corrosion and the minimum protective current density by solid electrolyte cp-f1. This provides the basis for the cathodic protection in the interior wall of the tank.