不锈钢在海水飞溅区的腐蚀行为  

CORROSION OF STAINLESS STEELS IN SEAWATER SPLASH ZONE

作　　者：黄桂桥[1] 

机构地区：[1]钢铁研究总院青岛海洋腐蚀研究所,青岛266071

出　　处：《中国腐蚀与防护学报》2002年第4期211-216,共6页Journal of Chinese Society For Corrosion and Protection

基　　金：国家自然科学基金资助项目 ( 5 9899114 0 )

摘　　要：总结了 5种不锈钢在青岛海域飞溅区暴露 16年的腐蚀行为和规律 .2Cr13在飞溅区不能维持其表面的钝态 ,耐蚀性较差 .含 16 %Cr以上的不锈钢在飞溅区有较好的耐蚀性 .1Cr18Ni9Ti、0 0Cr19Ni10和 0 0 0Cr18Mo2在飞溅区暴露 2～ 4年间 ,F179在 1、2年间 ,点蚀速度较大 ,此后它们的点蚀深度随时间无明显加深 .不锈钢在飞溅区的点蚀密度随暴露时间增大 .增加Cr含量。Corrosion results of 5 types of stainless steels exposed to splash zone at Qingdao Sea area of China were obtained.Corrosion behavior and law of stainless steels in splash zone were summarized.2Cr13 could not keep passive state in splash zone.Its corrosion resistance was poor.Stainless steels containing more than 16% Cr shown good corrosion resistant in splash zone,and their maximum pitting depths at Qingdao Sea area for 16 years exposure were less than 0.25mm.It was found that pitting rate is big for 1Cr18Ni9Ti,00Cr19Ni10,000Cr18Mo2 during the 2 to 4 years and for F179 during 1,2 years,after which the pitting depth deepened not obviously with exposure time.Pit density of stainless steels in splash zone increased with exposure time.Crevice corrosion of stainless steels in splash zone formed and grew more easily than pitting corrosion.Increasing Cr content and adding Mo enhanced corrosion resistance in stainless steels in splash zone.Corrosion behavior of stainless steels in splash zone was similar to their corrosion behavior in marine atmosphere.Stainless steels in splash zone corroded seriously than ones in marine atmosphere.

关 键 词：不锈钢 海水飞溅区 海水腐蚀 

分 类 号：TG172.5[金属学及工艺—金属表面处理]