测定了有机涂层的种类和厚度以及防锈颜料对Fc/有机涂层-Cu电偶腐蚀的影响。结果表明,涂层或涂层中活性颜料的防腐蚀性能愈强,电偶电流升至1微安/厘米~2所需的时间愈长。电偶的阴极对阳极的面积比值并不影响电偶电流密度。涂装酚醛涂层后,铁在氯化钠溶液中的阳极极化曲线和阴极极化曲线都呈现极限扩散电流的特征,这一电极行为决定了电偶的腐蚀特点。
The influences of the composition and thickness of organic coatings on the galvanic corrosion of the painted iron coupled with copper were examined. An incubation period before the galvanic current density rose to 1 μA / cm~2was found to relate to the ant
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