摘要
利用高温高压反应釜研究了两种3Cr钢在模拟中海油CO2环境中的腐蚀行为,在温度为60℃,CO2分压为1.5MPa以及介质流速为1m/s的条件下,两种3Cr钢呈现较明显的均匀腐蚀,平均腐蚀速率分别达到1.3614mm/a、1.2172mm/a。结合SEM和EDS分析手段研究了3Cr钢的CO2腐蚀产物。结果表明,其产物为富Cr产物膜,Cr的富集程度越高,Cr和Fe原子的分数比越大,产物膜的保护性能就越好。
The corrosion behaviors of two types of 3Cr steel in simulative CNOOC CO2 environment have been studied with a high-temperature and high-pressure reactor.Both of two kinds of 3Cr steel samples present severe uniform corrosion on the conditions that temperature was 60 ℃,CO2 partial pressure was 1.5 MPa and the flow velocity of corrosive medium was 1m/s,the average corrosion rate of 3Cr steel reach to 1.3614 mm/a and 1.2172 mm/a respectively.The corrosion products of 3Cr steel have been analysed by SEM and EDS,the result indicates that the product layer of 3Cr steel are rich in Cr.The higher the degree of Cr enrichment and Cr/Fe ratio,the better protective capability of product scale.
出处
《腐蚀与防护》
CAS
北大核心
2012年第S1期147-150,共4页
Corrosion & Protection
