采用砂土作为模拟土壤，通过失重法及电化学方法，研究了土壤盐浓差Ａ３钢的宏电池民腐蚀的影响规律。结果表明位于高盐土壤中的试样试验初期为宏电池阳极，而在第５天发生了极性逆转。
The effect of salt concentration difference macrocell (2. 0% C1-and 0. 02 % C1-) on the corrosion of A3 steel was studied in the simulated soil of moisture sands by means of weight loss and electrochemisay methods. It was sham that the sample in the higher salt concentration soil was anode of the macrocell at begining of test, then the polarity of the macrocell was altered after 5 days of experiment. The former anode of the macrocell in the higher salt concentration soil turned to be cathode. This form of macrocell continued until the end of the experiment.
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