混凝土阴极保护辅助阳极的电化学性能研究

摘要

利用混凝土模拟液，采用恒电流极化以及循环伏安法，研究了常用于混凝土外加电流阴极保护的混合金属氧化物涂层（MMO）钛网阳极的电化学性能，并对阳极采用了加速寿命测试。结果表明：选用的MMO阳极，在含NaCI的混凝土孔模拟液中有较好的耐蚀性和工作稳定性，析氧电位在1．2V左右，在工作电流为108mA／m^2时使用寿命可达到75年以上。%The electrochemical performance of MMO titanium mesh anodes was studied by using constant current po-larization and cyclic voltammetry in concrete pore simulation solution (SPS) with NaC1 addition. The accelerated life tes- ting of MMO titanium mesh anode were also carried out. Results showed that the MMO anode had a stable working per-formance, and oxygen evolution potential of MMO anode was about 1.2 V, the expected life of MMO anode can reach 75 years when its working current rating was 108 mA/m^2.