摘要
为阐明耐候钢表面稳定锈层的抗大气腐蚀机制，研究了人工制备锈蚀层的离子选择性.实验结果表明，在海洋性大气中 腐蚀４ａ的耐候钢表面的锈层产生了分层现象．其内锈层具有较好的阳离子选择性能，阻碍了Ｃｌ－的进入；合金元素在钢腐蚀过 程中的重新分配提高了锈层和近界面基体中合金元素的含量，保证了该耐候钢在近海大气中具有较好的抗大气腐蚀性能．
The ion selective properties of the rust film was studied in order to elucidate the mechanism of the protective ability of the stable rust layer formed on the weathering steel made by Baosteel Group Corporation. Results show that the film made of alpha -FeOOH or gamma -FeOOH has the cation selective ability, while the film made of alpha -CrxFe1-xOOH has the ion selective ability. Therefore, the Cl- is restricted to pass freely through the rust layer on the weathering steel. During corrosion, the enrichment of alloying elements was observed in the inner rust layer and the exterior part of the weathering steel exposed at the coast of Qingdao city for 4 a.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第2期193-196,共4页
Acta Metallurgica Sinica
关键词
耐候钢
锈层
离子选择性
大气腐蚀
weathering steel
rust layer
ion selective ability
atmospheric corrosion
