材料期刊网

在青岛、厦门和榆林3个试验站的潮汐区对5种不锈钢暴露16 年，总结其腐蚀行为和规律.在潮汐区暴露的不锈钢受点蚀和缝隙腐蚀破坏.不锈钢在潮汐区 暴露1至4年的点蚀速度较大，以后点蚀速度减慢.耐点蚀性能较好的不锈钢，耐缝隙腐蚀性 能也较好.不锈钢在潮汐区的腐蚀随暴露地点的海水温度升高而加重.增加Cr含量、添加Mo能 明显提高不锈钢在潮汐区的耐蚀性.Ni对提高的耐蚀性有效，但影响效果较小.海生物污损能 引起不锈钢的局部腐蚀，它对不锈钢在潮汐区的腐蚀有显著影响.

Corrosion results of 5 types of stainless steels ex posed to tidal zone at Qingdao,Xiamen and Yulin Sea area of China were reported. Corrosion behavior and rule of stainless steels in tidal zone was summarized.The stainless steels exposed to tidal zone were attacked by pitting and crevice cor rosion.It was found that pitting rates of stainless steels in tidal zone were bi gger during 1 to 4 years,after which the pitting rate diminished.The stainless s te el that had good pitting resistance in tidal zone possessed good resistance to c revice corrosion.Corrosion rate of stainless steels increased with going up of s eawater temperature of test sites.Increasing Cr content and adding Mo can enhanc e obviously corrosion resistance of stainless steels in tidal zone.Ni improv es corrosion resistance,but its improving effect is less.Fouling organism could cause localized corrosion of stainless steels.Effect of the fouling on corrosion of stainless steels in tidal zone was notable.