The results shaved that there was comion cell beneath oil film where corrosion occurred locally, the metal in cathode area was protected and that in anode area was coded.

• 结果表明，各涂油丝束电极间存在电化学差异，油膜下存在腐蚀微电池，油膜下的腐蚀是分区进行的，阴极区受到保护，阳极区金属发生腐蚀。