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在海洋环境下,钢铁构筑物在潮差区腐蚀特别严重。这是由于形成局部腐蚀的缘故。金属腐蚀理论指出,海水介质中,在形成局部腐蚀电池的钢铁构件表面上,由于局部阳极反应和局部阴极反应的不同,阳极区出现腐蚀坑,阴极区由于O_2的去极化反应而使其pH高于阳极区。因而在钢铁构件表面上呈现出pH的不均匀分布。在模拟海洋环境下的金属腐蚀快速试验中,如何原位快速测定腐蚀钢面上pH的微域差异就成
In the marine environment, the corrosion of steel structures in tidal range is particularly serious. This is due to the formation of local corrosion. Metal corrosion theory shows that in the seawater medium, due to the difference of local anode reaction and local cathode reaction, the corrosion pits appear in the anode region on the surface of the steel components forming the localized corrosion cell. Due to the depolarization reaction of O_2 in the cathode region, the pH Higher than the anode area. Thus presenting a non-uniform distribution of pH on the steel member surface. In the rapid simulation of simulated metal corrosion in the marine environment, how to quickly determine the in-situ differential corrosion of the micro-domain of pH