摘要
研究了高温高压环境下Cr合金管线钢的CO2腐蚀过程。结果表明,因点蚀源受到富Cr产物膜的抑制不能立即扩展,试样出现钝化现象。腐蚀过程中,腐蚀产物膜的密度先升高后减低。腐蚀167 h后由于含Cr化合物充满了腐蚀产物膜并且FeCO3颗粒逐渐长大,使得腐蚀产物膜再次变得致密。
The corrosion process of Cr alloy steel used for pressure pipe in the solution containing CO2 under high temperature and pressure environment was investigated. The results show that the pitting source can not extends immediately due to the suppression of Cr-rich corrosion product films, the passivation appears. The density of the corrosion product films increases first and then decreases during the corroding process. The corrosion product films became dense again after corroding for 167 h, because the Cr-contained compounds are full of the corrosion product films and the FeCO3 particles grow up gradually.
出处
《铸造技术》
CAS
北大核心
2014年第5期971-973,共3页
Foundry Technology
