钢筋混凝土结构中阴极保护用MMO涂层钛阳极的研究

Study of MMO Coating Titanium Anode for Cathodic Protection in Reinforced Concrete Structure

摘要:

采用热分解法制备了IrTa-X混合金属氧化物（MMO）涂层钛阳极。通过极化曲线研究了钛阳极的电化学性能，用SEM观察了涂层形貌，研究了阳极寿命与涂层厚度和电流密度之间的关系，并与国外阳极试样的寿命做了一对比。结果表明，所研制的涂层钛阳极具有良好的电化学性能和较长的使用寿命，是钢筋混凝土结构外加电流阴极保护中比较理想的辅助阳极。

Abstract:

IrTa-X mixed metal oxide (MMO) coating titanium anode was prepared by thermal decomposition process. The electrochemical performance of Ti anode was investigated by means of polarization curves. The surface morphology of the coating was observed by SEM. The relationship between the anode lifetime and coating thickness and the anode current density was studied. The results indicate that the Ti anode has the superior electrochemical performance and the longer lifetime. So the MMO anode will be the promissing auxiliary anode of impressed current cathodic protection for reinforced concrete structure.