Accumulating model of steel balls was used to simulate the pore distribution in the coating the pore distribution in the direction of coating thickness was self - existent and could not join to intercommunicating pore 分析结果表明有两个主要的原因致使镀层不会产生水溶液介质的孔隙腐蚀:一是在镀层厚度方向上孔隙是独立的,不会相互连接形成通孔。