摘要
用去离子水和3.5%NaCl模拟和缓与苛刻的腐蚀环境,进行腐蚀环境交替变换的实验研究低合金耐候钢的大气腐蚀行为。结果表明,在和缓或苛刻的单一腐蚀条件下低合金耐候钢都不易形成致密的锈层,但交替腐蚀1个周期后,形成了敛密的保护性锈层。在初期腐蚀环境苛刻、后期腐蚀环境和缓的试验条件下,与相反的试验条件相比,耐候钢能更快地形成更致密的锈层。
Deionized water and 3.5% NaCI were used to simulate the gentle and harsh corrosion environments respectively in this work. The atmospheric corrosion behavior of weathering steel in different corrosion orders was compared by alternative corrosion tests. The results of SEM and EIS of the rusted samples revealed that there was no compact rust layer formed in only gentle or harsh corrosion environment, while a compact rust layer formed after alternative corrosion in gentle and harsh environments, Corrosion mass gain results show that when corrosion started in the harsh environment followed by in the gentle environment, the formation of a compact rust layer needed less time than that in the opposite corrosion order.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2013年第1期18-24,共7页
Chinese Journal of Materials Research
基金
国家自然科学基金51071020
北京科技大学冶金工程研究院基础理论研究基金资助项目~~
关键词
材料失效与保护
耐候钢
交替腐蚀
锈层稳定化处理
material failure and protection, weathering steel, alternative corrosion, rust layer stabiliz-ing treatment
